scala.collection.mutable

Queue

class Queue[A] extends MutableList[A] with LinearSeqOptimized[A, Queue[A]] with GenericTraversableTemplate[A, Queue] with Cloneable[Queue[A]] with Serializable

Queue objects implement data structures that allow to insert and retrieve elements in a first-in-first-out (FIFO) manner.

Source
Queue.scala
Version

2.8

Since

1

See also

"Scala's Collection Library overview" section on Queues for more information.

Linear Supertypes
MutableList[A], Serializable, java.io.Serializable, Builder[A, MutableList[A]], Growable[A], Clearable, LinearSeqOptimized[A, Queue[A]], LinearSeq[A], collection.LinearSeq[A], LinearSeqLike[A, Queue[A]], AbstractSeq[A], Seq[A], SeqLike[A, Seq[A]], Cloneable[Queue[A]], scala.Cloneable, java.lang.Cloneable, Iterable[A], Traversable[A], Mutable, collection.AbstractSeq[A], collection.Seq[A], collection.SeqLike[A, Queue[A]], GenSeq[A], GenSeqLike[A, Queue[A]], PartialFunction[Int, A], (Int) ⇒ A, collection.AbstractIterable[A], collection.Iterable[A], IterableLike[A, Queue[A]], Equals, GenIterable[A], GenIterableLike[A, Queue[A]], AbstractTraversable[A], collection.Traversable[A], GenTraversable[A], GenericTraversableTemplate[A, Queue], TraversableLike[A, Queue[A]], GenTraversableLike[A, Queue[A]], Parallelizable[A, ParSeq[A]], TraversableOnce[A], GenTraversableOnce[A], FilterMonadic[A, Queue[A]], HasNewBuilder[A, Queue[A]], AnyRef, Any
Known Subclasses
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Inherited
  1. Queue
  2. MutableList
  3. Serializable
  4. Serializable
  5. Builder
  6. Growable
  7. Clearable
  8. LinearSeqOptimized
  9. LinearSeq
  10. LinearSeq
  11. LinearSeqLike
  12. AbstractSeq
  13. Seq
  14. SeqLike
  15. Cloneable
  16. Cloneable
  17. Cloneable
  18. Iterable
  19. Traversable
  20. Mutable
  21. AbstractSeq
  22. Seq
  23. SeqLike
  24. GenSeq
  25. GenSeqLike
  26. PartialFunction
  27. Function1
  28. AbstractIterable
  29. Iterable
  30. IterableLike
  31. Equals
  32. GenIterable
  33. GenIterableLike
  34. AbstractTraversable
  35. Traversable
  36. GenTraversable
  37. GenericTraversableTemplate
  38. TraversableLike
  39. GenTraversableLike
  40. Parallelizable
  41. TraversableOnce
  42. GenTraversableOnce
  43. FilterMonadic
  44. HasNewBuilder
  45. AnyRef
  46. Any
Implicitly
  1. by traversable2ops
  2. by MonadOps
  3. by any2stringadd
  4. by any2stringfmt
  5. by any2ArrowAssoc
  6. by any2Ensuring
  7. by alternateImplicit
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Instance Constructors

  1. new Queue()

Type Members

  1. type Self = Queue[A]

    The type implementing this traversable

    The type implementing this traversable

    Attributes
    protected
    Definition Classes
    TraversableLike
  2. class WithFilter extends FilterMonadic[A, Repr]

    A class supporting filtered operations.

Value Members

  1. final def !=(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  2. final def !=(arg0: Any): Boolean

    Test two objects for inequality.

    Test two objects for inequality.

    returns

    true if !(this == that), false otherwise.

    Definition Classes
    Any
  3. final def ##(): Int

    Equivalent to x.hashCode except for boxed numeric types and null.

    Equivalent to x.hashCode except for boxed numeric types and null. For numerics, it returns a hash value which is consistent with value equality: if two value type instances compare as true, then ## will produce the same hash value for each of them. For null returns a hashcode where null.hashCode throws a NullPointerException.

    returns

    a hash value consistent with ==

    Definition Classes
    AnyRef → Any
  4. def +(other: String): String

    Implicit information
    This member is added by an implicit conversion from Queue[A] to StringAdd performed by method any2stringadd in scala.Predef.
    Definition Classes
    StringAdd
  5. def ++[B](that: GenTraversableOnce[B]): Queue[B]

    [use case] Returns a new mutable queue containing the elements from the left hand operand followed by the elements from the right hand operand.

    [use case]

    Returns a new mutable queue containing the elements from the left hand operand followed by the elements from the right hand operand. The element type of the mutable queue is the most specific superclass encompassing the element types of the two operands.

    Example:

    scala> val a = LinkedList(1)
    a: scala.collection.mutable.LinkedList[Int] = LinkedList(1)
    
    scala> val b = LinkedList(2)
    b: scala.collection.mutable.LinkedList[Int] = LinkedList(2)
    
    scala> val c = a ++ b
    c: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2)
    
    scala> val d = LinkedList('a')
    d: scala.collection.mutable.LinkedList[Char] = LinkedList(a)
    
    scala> val e = c ++ d
    e: scala.collection.mutable.LinkedList[AnyVal] = LinkedList(1, 2, a)
    B

    the element type of the returned collection.

    that

    the traversable to append.

    returns

    a new mutable queue which contains all elements of this mutable queue followed by all elements of that.

    Definition Classes
    TraversableLikeGenTraversableLike
    Full Signature

    def ++[B >: A, That](that: GenTraversableOnce[B])(implicit bf: CanBuildFrom[Queue[A], B, That]): That

  6. def ++:[B >: A, That](that: collection.Traversable[B])(implicit bf: CanBuildFrom[Queue[A], B, That]): That

    As with ++, returns a new collection containing the elements from the left operand followed by the elements from the right operand.

    As with ++, returns a new collection containing the elements from the left operand followed by the elements from the right operand.

    It differs from ++ in that the right operand determines the type of the resulting collection rather than the left one. Mnemonic: the COLon is on the side of the new COLlection type.

    Example:

    scala> val x = List(1)
    x: List[Int] = List(1)
    
    scala> val y = LinkedList(2)
    y: scala.collection.mutable.LinkedList[Int] = LinkedList(2)
    
    scala> val z = x ++: y
    z: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2)

    This overload exists because: for the implementation of ++: we should reuse that of ++ because many collections override it with more efficient versions.

    Since TraversableOnce has no ++ method, we have to implement that directly, but Traversable and down can use the overload.

    B

    the element type of the returned collection.

    That

    the class of the returned collection. Where possible, That is the same class as the current collection class Repr, but this depends on the element type B being admissible for that class, which means that an implicit instance of type CanBuildFrom[Repr, B, That] is found.

    that

    the traversable to append.

    bf

    an implicit value of class CanBuildFrom which determines the result class That from the current representation type Repr and the new element type B.

    returns

    a new collection of type That which contains all elements of this mutable queue followed by all elements of that.

    Definition Classes
    TraversableLike
  7. def ++:[B](that: TraversableOnce[B]): Queue[B]

    [use case] As with ++, returns a new collection containing the elements from the left operand followed by the elements from the right operand.

    [use case]

    As with ++, returns a new collection containing the elements from the left operand followed by the elements from the right operand.

    It differs from ++ in that the right operand determines the type of the resulting collection rather than the left one. Mnemonic: the COLon is on the side of the new COLlection type.

    Example:

    scala> val x = List(1)
    x: List[Int] = List(1)
    
    scala> val y = LinkedList(2)
    y: scala.collection.mutable.LinkedList[Int] = LinkedList(2)
    
    scala> val z = x ++: y
    z: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2)
    B

    the element type of the returned collection.

    that

    the traversable to append.

    returns

    a new mutable queue which contains all elements of this mutable queue followed by all elements of that.

    Definition Classes
    TraversableLike
    Full Signature

    def ++:[B >: A, That](that: TraversableOnce[B])(implicit bf: CanBuildFrom[Queue[A], B, That]): That

  8. def ++=(xs: TraversableOnce[A]): Queue.this.type

    adds all elements produced by a TraversableOnce to this mutable queue.

    adds all elements produced by a TraversableOnce to this mutable queue.

    xs

    the TraversableOnce producing the elements to add.

    returns

    the mutable queue itself.

    Definition Classes
    Growable
  9. def +:(elem: A): Queue[A]

    [use case] A copy of the mutable queue with an element prepended.

    [use case]

    A copy of the mutable queue with an element prepended.

    Note that :-ending operators are right associative (see example). A mnemonic for +: vs. :+ is: the COLon goes on the COLlection side.

    Also, the original mutable queue is not modified, so you will want to capture the result.

    Example:

    scala> val x = LinkedList(1)
    x: scala.collection.mutable.LinkedList[Int] = LinkedList(1)
    
    scala> val y = 2 +: x
    y: scala.collection.mutable.LinkedList[Int] = LinkedList(2, 1)
    
    scala> println(x)
    LinkedList(1)
    elem

    the prepended element

    returns

    a new mutable queue consisting of elem followed by all elements of this mutable queue.

    Definition Classes
    SeqLikeGenSeqLike
    Full Signature

    def +:[B >: A, That](elem: B)(implicit bf: CanBuildFrom[Queue[A], B, That]): That

  10. def +=(elem: A): Queue.this.type

    Appends a single element to this buffer.

    Appends a single element to this buffer. This takes constant time.

    elem

    the element to append.

    returns

    the builder itself.

    Definition Classes
    MutableListBuilderGrowable
  11. def +=(elem1: A, elem2: A, elems: A*): Queue.this.type

    adds two or more elements to this mutable queue.

    adds two or more elements to this mutable queue.

    elem1

    the first element to add.

    elem2

    the second element to add.

    elems

    the remaining elements to add.

    returns

    the mutable queue itself

    Definition Classes
    Growable
  12. def +=:(elem: A): Queue.this.type

    Prepends a single element to this list.

    Prepends a single element to this list. This operation takes constant time.

    elem

    the element to prepend.

    returns

    this mutable queue.

    Definition Classes
    MutableList
  13. def ->[B](y: B): (Queue[A], B)

    Implicit information
    This member is added by an implicit conversion from Queue[A] to ArrowAssoc[Queue[A]] performed by method any2ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  14. def /:[B](z: B)(op: (B, A) ⇒ B): B

    Applies a binary operator to a start value and all elements of this mutable queue, going left to right.

    Applies a binary operator to a start value and all elements of this mutable queue, going left to right.

    Note: /: is alternate syntax for foldLeft; z /: xs is the same as xs foldLeft z.

    Examples:

    Note that the folding function used to compute b is equivalent to that used to compute c.

    scala> val a = LinkedList(1,2,3,4)
    a: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2, 3, 4)
    
    scala> val b = (5 /: a)(_+_)
    b: Int = 15
    
    scala> val c = (5 /: a)((x,y) => x + y)
    c: Int = 15
    B

    the result type of the binary operator.

    z

    the start value.

    op

    the binary operator.

    returns

    the result of inserting op between consecutive elements of this mutable queue, going left to right with the start value z on the left:

    op(...op(op(z, x_1), x_2), ..., x_n)

    where x1, ..., xn are the elements of this mutable queue.

    Definition Classes
    TraversableOnceGenTraversableOnce
  15. def :+(elem: A): Queue[A]

    [use case] A copy of this mutable queue with an element appended.

    [use case]

    A copy of this mutable queue with an element appended.

    A mnemonic for +: vs. :+ is: the COLon goes on the COLlection side.

    Example:

    scala> import scala.collection.mutable.LinkedList
    import scala.collection.mutable.LinkedList
    
    scala> val a = LinkedList(1)
    a: scala.collection.mutable.LinkedList[Int] = LinkedList(1)
    
    scala> val b = a :+ 2
    b: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2)
    
    scala> println(a)
    LinkedList(1)
    elem

    the appended element

    returns

    a new mutable queue consisting of all elements of this mutable queue followed by elem.

    Definition Classes
    SeqLikeGenSeqLike
    Full Signature

    def :+[B >: A, That](elem: B)(implicit bf: CanBuildFrom[Queue[A], B, That]): That

  16. def :\[B](z: B)(op: (A, B) ⇒ B): B

    Applies a binary operator to all elements of this mutable queue and a start value, going right to left.

    Applies a binary operator to all elements of this mutable queue and a start value, going right to left.

    Note: :\ is alternate syntax for foldRight; xs :\ z is the same as xs foldRight z.

    Examples:

    Note that the folding function used to compute b is equivalent to that used to compute c.

    scala> val a = LinkedList(1,2,3,4)
    a: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2, 3, 4)
    
    scala> val b = (a :\ 5)(_+_)
    b: Int = 15
    
    scala> val c = (a :\ 5)((x,y) => x + y)
    c: Int = 15
    B

    the result type of the binary operator.

    z

    the start value

    op

    the binary operator

    returns

    the result of inserting op between consecutive elements of this mutable queue, going right to left with the start value z on the right:

    op(x_1, op(x_2, ... op(x_n, z)...))

    where x1, ..., xn are the elements of this mutable queue.

    Definition Classes
    TraversableOnceGenTraversableOnce
  17. final def ==(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  18. final def ==(arg0: Any): Boolean

    Test two objects for equality.

    Test two objects for equality. The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).

    returns

    true if the receiver object is equivalent to the argument; false otherwise.

    Definition Classes
    Any
  19. def addString(b: scala.StringBuilder): scala.StringBuilder

    Appends all elements of this mutable queue to a string builder.

    Appends all elements of this mutable queue to a string builder. The written text consists of the string representations (w.r.t. the method toString) of all elements of this mutable queue without any separator string.

    Example:

    scala> val a = LinkedList(1,2,3,4)
    a: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2, 3, 4)
    
    scala> val b = new StringBuilder()
    b: StringBuilder =
    
    scala> val h = a.addString(b)
    b: StringBuilder = 1234
    b

    the string builder to which elements are appended.

    returns

    the string builder b to which elements were appended.

    Definition Classes
    TraversableOnce
  20. def addString(b: scala.StringBuilder, sep: String): scala.StringBuilder

    Appends all elements of this mutable queue to a string builder using a separator string.

    Appends all elements of this mutable queue to a string builder using a separator string. The written text consists of the string representations (w.r.t. the method toString) of all elements of this mutable queue, separated by the string sep.

    Example:

    scala> val a = LinkedList(1,2,3,4)
    a: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2, 3, 4)
    
    scala> val b = new StringBuilder()
    b: StringBuilder =
    
    scala> a.addString(b, ", ")
    res0: StringBuilder = 1, 2, 3, 4
    b

    the string builder to which elements are appended.

    sep

    the separator string.

    returns

    the string builder b to which elements were appended.

    Definition Classes
    TraversableOnce
  21. def addString(b: scala.StringBuilder, start: String, sep: String, end: String): scala.StringBuilder

    Appends all elements of this mutable queue to a string builder using start, end, and separator strings.

    Appends all elements of this mutable queue to a string builder using start, end, and separator strings. The written text begins with the string start and ends with the string end. Inside, the string representations (w.r.t. the method toString) of all elements of this mutable queue are separated by the string sep.

    Example:

    scala> val a = LinkedList(1,2,3,4)
    a: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2, 3, 4)
    
    scala> val b = new StringBuilder()
    b: StringBuilder =
    
    scala> a.addString(b, "LinkedList(", ", ", ")")
    res1: StringBuilder = LinkedList(1, 2, 3, 4)
    b

    the string builder to which elements are appended.

    start

    the starting string.

    sep

    the separator string.

    end

    the ending string.

    returns

    the string builder b to which elements were appended.

    Definition Classes
    TraversableOnce
  22. def aggregate[B](z: B)(seqop: (B, A) ⇒ B, combop: (B, B) ⇒ B): B

    Aggregates the results of applying an operator to subsequent elements.

    Aggregates the results of applying an operator to subsequent elements.

    This is a more general form of fold and reduce. It has similar semantics, but does not require the result to be a supertype of the element type. It traverses the elements in different partitions sequentially, using seqop to update the result, and then applies combop to results from different partitions. The implementation of this operation may operate on an arbitrary number of collection partitions, so combop may be invoked an arbitrary number of times.

    For example, one might want to process some elements and then produce a Set. In this case, seqop would process an element and append it to the list, while combop would concatenate two lists from different partitions together. The initial value z would be an empty set.

    pc.aggregate(Set[Int]())(_ += process(_), _ ++ _)

    Another example is calculating geometric mean from a collection of doubles (one would typically require big doubles for this).

    B

    the type of accumulated results

    z

    the initial value for the accumulated result of the partition - this will typically be the neutral element for the seqop operator (e.g. Nil for list concatenation or 0 for summation)

    seqop

    an operator used to accumulate results within a partition

    combop

    an associative operator used to combine results from different partitions

    Definition Classes
    TraversableOnceGenTraversableOnce
  23. def andThen[C](k: (A) ⇒ C): PartialFunction[Int, C]

    Composes this partial function with a transformation function that gets applied to results of this partial function.

    Composes this partial function with a transformation function that gets applied to results of this partial function.

    C

    the result type of the transformation function.

    k

    the transformation function

    returns

    a partial function with the same domain as this partial function, which maps arguments x to k(this(x)).

    Definition Classes
    PartialFunctionFunction1
  24. def appendElem(elem: A): Unit

    Attributes
    protected
    Definition Classes
    MutableList
  25. def apply(n: Int): A

    Returns the n-th element of this list.

    Returns the n-th element of this list.

    returns

    the element of this mutable queue at index idx, where 0 indicates the first element.

    Definition Classes
    MutableListLinearSeqOptimizedSeqLikeGenSeqLikeFunction1
    Exceptions thrown
    IndexOutOfBoundsException

    if index does not exist.

  26. def applyOrElse[A1 <: Int, B1 >: A](x: A1, default: (A1) ⇒ B1): B1

    Applies this partial function to the given argument when it is contained in the function domain.

    Applies this partial function to the given argument when it is contained in the function domain. Applies fallback function where this partial function is not defined.

    Note that expression pf.applyOrElse(x, default) is equivalent to

    if(pf isDefinedAt x) pf(x) else default(x)

    except that applyOrElse method can be implemented more efficiently. For all partial function literals compiler generates applyOrElse implementation which avoids double evaluation of pattern matchers and guards. This makes applyOrElse the basis for the efficient implementation for many operations and scenarios, such as:

    • combining partial functions into orElse/andThen chains does not lead to excessive apply/isDefinedAt evaluation
    • lift and unlift do not evaluate source functions twice on each invocation
    • runWith allows efficient imperative-style combining of partial functions with conditionally applied actions

    For non-literal partial function classes with nontrivial isDefinedAt method it is recommended to override applyOrElse with custom implementation that avoids double isDefinedAt evaluation. This may result in better performance and more predictable behavior w.r.t. side effects.

    x

    the function argument

    default

    the fallback function

    returns

    the result of this function or fallback function application.

    Definition Classes
    PartialFunction
    Since

    2.10

  27. final def asInstanceOf[T0]: T0

    Cast the receiver object to be of type T0.

    Cast the receiver object to be of type T0.

    Note that the success of a cast at runtime is modulo Scala's erasure semantics. Therefore the expression 1.asInstanceOf[String] will throw a ClassCastException at runtime, while the expression List(1).asInstanceOf[List[String]] will not. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the requested type.

    returns

    the receiver object.

    Definition Classes
    Any
    Exceptions thrown
    ClassCastException

    if the receiver object is not an instance of the erasure of type T0.

  28. def asParIterable: ParIterable[A]

    Implicit information
    This member is added by an implicit conversion from Queue[A] to TraversableOps[A] performed by method traversable2ops in scala.collection.parallel.
    Definition Classes
    TraversableOps
  29. def asParSeq: ParSeq[A]

    Implicit information
    This member is added by an implicit conversion from Queue[A] to TraversableOps[A] performed by method traversable2ops in scala.collection.parallel.
    Definition Classes
    TraversableOps
  30. def canEqual(that: Any): Boolean

    Method called from equality methods, so that user-defined subclasses can refuse to be equal to other collections of the same kind.

    Method called from equality methods, so that user-defined subclasses can refuse to be equal to other collections of the same kind.

    that

    The object with which this mutable queue should be compared

    returns

    true, if this mutable queue can possibly equal that, false otherwise. The test takes into consideration only the run-time types of objects but ignores their elements.

    Definition Classes
    IterableLikeEquals
  31. def clear(): Unit

    Clears the contents of this builder.

    Clears the contents of this builder. After execution of this method the builder will contain no elements.

    Definition Classes
    MutableListBuilderGrowableClearable
  32. def clone(): Queue[A]

    Create a copy of the receiver object.

    Create a copy of the receiver object.

    The default implementation of the clone method is platform dependent.

    returns

    a copy of the receiver object.

    Definition Classes
    QueueMutableListCloneable → AnyRef
    Note

    not specified by SLS as a member of AnyRef

  33. def collect[B](pf: PartialFunction[A, B]): Queue[B]

    [use case] Builds a new collection by applying a partial function to all elements of this mutable queue on which the function is defined.

    [use case]

    Builds a new collection by applying a partial function to all elements of this mutable queue on which the function is defined.

    B

    the element type of the returned collection.

    pf

    the partial function which filters and maps the mutable queue.

    returns

    a new mutable queue resulting from applying the given partial function pf to each element on which it is defined and collecting the results. The order of the elements is preserved.

    Definition Classes
    TraversableLikeGenTraversableLike
    Full Signature

    def collect[B, That](pf: PartialFunction[A, B])(implicit bf: CanBuildFrom[Queue[A], B, That]): That

  34. def collectFirst[B](pf: PartialFunction[A, B]): Option[B]

    Finds the first element of the mutable queue for which the given partial function is defined, and applies the partial function to it.

    Finds the first element of the mutable queue for which the given partial function is defined, and applies the partial function to it.

    pf

    the partial function

    returns

    an option value containing pf applied to the first value for which it is defined, or None if none exists.

    Definition Classes
    TraversableOnce
    Example:
    1. Seq("a", 1, 5L).collectFirst({ case x: Int => x*10 }) = Some(10)

  35. def combinations(n: Int): Iterator[Queue[A]]

    Iterates over combinations.

    Iterates over combinations.

    returns

    An Iterator which traverses the possible n-element combinations of this mutable queue.

    Definition Classes
    SeqLike
    Example:
    1. "abbbc".combinations(2) = Iterator(ab, ac, bb, bc)

  36. def companion: GenericCompanion[Queue]

    The factory companion object that builds instances of class mutable.Queue.

    The factory companion object that builds instances of class mutable.Queue. (or its Iterable superclass where class mutable.Queue is not a Seq.)

    Definition Classes
    QueueMutableListLinearSeqLinearSeqSeqIterableTraversableSeqGenSeqIterableGenIterableTraversableGenTraversableGenericTraversableTemplate
  37. def compose[A](g: (A) ⇒ Int): (A) ⇒ A

    Composes two instances of Function1 in a new Function1, with this function applied last.

    Composes two instances of Function1 in a new Function1, with this function applied last.

    A

    the type to which function g can be applied

    g

    a function A => T1

    returns

    a new function f such that f(x) == apply(g(x))

    Definition Classes
    Function1
    Annotations
    @unspecialized()
  38. def contains(elem: Any): Boolean

    Tests whether this mutable queue contains a given value as an element.

    Tests whether this mutable queue contains a given value as an element.

    elem

    the element to test.

    returns

    true if this mutable queue has an element that is equal (as determined by ==) to elem, false otherwise.

    Definition Classes
    LinearSeqOptimizedSeqLike
  39. def containsSlice[B](that: GenSeq[B]): Boolean

    Tests whether this mutable queue contains a given sequence as a slice.

    Tests whether this mutable queue contains a given sequence as a slice.

    that

    the sequence to test

    returns

    true if this mutable queue contains a slice with the same elements as that, otherwise false.

    Definition Classes
    SeqLike
  40. def copyToArray(xs: Array[A], start: Int, len: Int): Unit

    [use case] Copies elements of this mutable queue to an array.

    [use case]

    Copies elements of this mutable queue to an array. Fills the given array xs with at most len elements of this mutable queue, starting at position start. Copying will stop once either the end of the current mutable queue is reached, or the end of the array is reached, or len elements have been copied.

    xs

    the array to fill.

    start

    the starting index.

    len

    the maximal number of elements to copy.

    Definition Classes
    IterableLikeTraversableLikeTraversableOnceGenTraversableOnce
    Full Signature

    def copyToArray[B >: A](xs: Array[B], start: Int, len: Int): Unit

  41. def copyToArray(xs: Array[A]): Unit

    [use case] Copies values of this mutable queue to an array.

    [use case]

    Copies values of this mutable queue to an array. Fills the given array xs with values of this mutable queue. Copying will stop once either the end of the current mutable queue is reached, or the end of the array is reached.

    xs

    the array to fill.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def copyToArray[B >: A](xs: Array[B]): Unit

  42. def copyToArray(xs: Array[A], start: Int): Unit

    [use case] Copies values of this mutable queue to an array.

    [use case]

    Copies values of this mutable queue to an array. Fills the given array xs with values of this mutable queue, beginning at index start. Copying will stop once either the end of the current mutable queue is reached, or the end of the array is reached.

    xs

    the array to fill.

    start

    the starting index.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def copyToArray[B >: A](xs: Array[B], start: Int): Unit

  43. def copyToBuffer[B >: A](dest: Buffer[B]): Unit

    Copies all elements of this mutable queue to a buffer.

    Copies all elements of this mutable queue to a buffer.

    dest

    The buffer to which elements are copied.

    Definition Classes
    TraversableOnce
  44. final def corresponds[B](that: GenSeq[B])(p: (A, B) ⇒ Boolean): Boolean

    Tests whether every element of this mutable queue relates to the corresponding element of another sequence by satisfying a test predicate.

    Tests whether every element of this mutable queue relates to the corresponding element of another sequence by satisfying a test predicate.

    B

    the type of the elements of that

    that

    the other sequence

    p

    the test predicate, which relates elements from both sequences

    returns

    true if both sequences have the same length and p(x, y) is true for all corresponding elements x of this mutable queue and y of that, otherwise false.

    Definition Classes
    LinearSeqLikeSeqLikeGenSeqLike
    Annotations
    @tailrec()
  45. def count(p: (A) ⇒ Boolean): Int

    Counts the number of elements in the mutable queue which satisfy a predicate.

    Counts the number of elements in the mutable queue which satisfy a predicate.

    p

    the predicate used to test elements.

    returns

    the number of elements satisfying the predicate p.

    Definition Classes
    TraversableOnceGenTraversableOnce
  46. def dequeue(): A

    Returns the first element in the queue, and removes this element from the queue.

    Returns the first element in the queue, and removes this element from the queue.

    returns

    the first element of the queue.

    Exceptions thrown
    Predef.NoSuchElementException
  47. def dequeueAll(p: (A) ⇒ Boolean): Seq[A]

    Returns all elements in the queue which satisfy the given predicate, and removes those elements from the queue.

    Returns all elements in the queue which satisfy the given predicate, and removes those elements from the queue.

    p

    the predicate used for choosing elements

    returns

    a sequence of all elements in the queue for which p yields true.

  48. def dequeueFirst(p: (A) ⇒ Boolean): Option[A]

    Returns the first element in the queue which satisfies the given predicate, and removes this element from the queue.

    Returns the first element in the queue which satisfies the given predicate, and removes this element from the queue.

    p

    the predicate used for choosing the first element

    returns

    the first element of the queue for which p yields true

  49. def diff(that: collection.Seq[A]): Queue[A]

    [use case] Computes the multiset difference between this mutable queue and another sequence.

    [use case]

    Computes the multiset difference between this mutable queue and another sequence.

    that

    the sequence of elements to remove

    returns

    a new mutable queue which contains all elements of this mutable queue except some of occurrences of elements that also appear in that. If an element value x appears n times in that, then the first n occurrences of x will not form part of the result, but any following occurrences will.

    Definition Classes
    SeqLikeGenSeqLike
    Full Signature

    def diff[B >: A](that: GenSeq[B]): Queue[A]

  50. def distinct: Queue[A]

    Builds a new mutable queue from this mutable queue without any duplicate elements.

    Builds a new mutable queue from this mutable queue without any duplicate elements.

    returns

    A new mutable queue which contains the first occurrence of every element of this mutable queue.

    Definition Classes
    SeqLikeGenSeqLike
  51. def drop(n: Int): Queue[A]

    Selects all elements except first n ones.

    Selects all elements except first n ones.

    n

    the number of elements to drop from this mutable queue.

    returns

    a mutable queue consisting of all elements of this mutable queue except the first n ones, or else the empty mutable queue, if this mutable queue has less than n elements.

    Definition Classes
    LinearSeqOptimizedIterableLikeTraversableLikeGenTraversableLike
  52. def dropRight(n: Int): Queue[A]

    Selects all elements except last n ones.

    Selects all elements except last n ones.

    n

    The number of elements to take

    returns

    a mutable queue consisting of all elements of this mutable queue except the last n ones, or else the empty mutable queue, if this mutable queue has less than n elements.

    Definition Classes
    LinearSeqOptimizedIterableLike
  53. def dropWhile(p: (A) ⇒ Boolean): Queue[A]

    Drops longest prefix of elements that satisfy a predicate.

    Drops longest prefix of elements that satisfy a predicate.

    returns

    the longest suffix of this mutable queue whose first element does not satisfy the predicate p.

    Definition Classes
    TraversableLikeGenTraversableLike
  54. def endsWith[B](that: GenSeq[B]): Boolean

    Tests whether this mutable queue ends with the given sequence.

    Tests whether this mutable queue ends with the given sequence.

    that

    the sequence to test

    returns

    true if this mutable queue has that as a suffix, false otherwise.

    Definition Classes
    SeqLikeGenSeqLike
  55. def enqueue(elems: A*): Unit

    Adds all elements to the queue.

    Adds all elements to the queue.

    elems

    the elements to add.

  56. def ensuring(cond: (Queue[A]) ⇒ Boolean, msg: ⇒ Any): Queue[A]

    Implicit information
    This member is added by an implicit conversion from Queue[A] to Ensuring[Queue[A]] performed by method any2Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  57. def ensuring(cond: (Queue[A]) ⇒ Boolean): Queue[A]

    Implicit information
    This member is added by an implicit conversion from Queue[A] to Ensuring[Queue[A]] performed by method any2Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  58. def ensuring(cond: Boolean, msg: ⇒ Any): Queue[A]

    Implicit information
    This member is added by an implicit conversion from Queue[A] to Ensuring[Queue[A]] performed by method any2Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  59. def ensuring(cond: Boolean): Queue[A]

    Implicit information
    This member is added by an implicit conversion from Queue[A] to Ensuring[Queue[A]] performed by method any2Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  60. final def eq(arg0: AnyRef): Boolean

    Tests whether the argument (arg0) is a reference to the receiver object (this).

    Tests whether the argument (arg0) is a reference to the receiver object (this).

    The eq method implements an equivalence relation on non-null instances of AnyRef, and has three additional properties:

    • It is consistent: for any non-null instances x and y of type AnyRef, multiple invocations of x.eq(y) consistently returns true or consistently returns false.
    • For any non-null instance x of type AnyRef, x.eq(null) and null.eq(x) returns false.
    • null.eq(null) returns true.

    When overriding the equals or hashCode methods, it is important to ensure that their behavior is consistent with reference equality. Therefore, if two objects are references to each other (o1 eq o2), they should be equal to each other (o1 == o2) and they should hash to the same value (o1.hashCode == o2.hashCode).

    returns

    true if the argument is a reference to the receiver object; false otherwise.

    Definition Classes
    AnyRef
  61. def equals(that: Any): Boolean

    The equals method for arbitrary sequences.

    The equals method for arbitrary sequences. Compares this sequence to some other object.

    that

    The object to compare the sequence to

    returns

    true if that is a sequence that has the same elements as this sequence in the same order, false otherwise

    Definition Classes
    GenSeqLikeEqualsAny
  62. def exists(p: (A) ⇒ Boolean): Boolean

    Tests whether a predicate holds for some of the elements of this mutable queue.

    Tests whether a predicate holds for some of the elements of this mutable queue.

    p

    the predicate used to test elements.

    returns

    true if the given predicate p holds for some of the elements of this mutable queue, otherwise false.

    Definition Classes
    LinearSeqOptimizedIterableLikeTraversableLikeTraversableOnceGenTraversableOnce
  63. def extractFirst(start: LinkedList[A], p: (A) ⇒ Boolean): Option[LinkedList[A]]

    Return the proper suffix of this list which starts with the first element that satisfies p.

    Return the proper suffix of this list which starts with the first element that satisfies p. That element is unlinked from the list. If no element satisfies p, return None.

  64. def filter(p: (A) ⇒ Boolean): Queue[A]

    Selects all elements of this mutable queue which satisfy a predicate.

    Selects all elements of this mutable queue which satisfy a predicate.

    p

    the predicate used to test elements.

    returns

    a new mutable queue consisting of all elements of this mutable queue that satisfy the given predicate p. The order of the elements is preserved.

    Definition Classes
    TraversableLikeGenTraversableLike
  65. def filterNot(p: (A) ⇒ Boolean): Queue[A]

    Selects all elements of this mutable queue which do not satisfy a predicate.

    Selects all elements of this mutable queue which do not satisfy a predicate.

    p

    the predicate used to test elements.

    returns

    a new mutable queue consisting of all elements of this mutable queue that do not satisfy the given predicate p. The order of the elements is preserved.

    Definition Classes
    TraversableLikeGenTraversableLike
  66. def finalize(): Unit

    Called by the garbage collector on the receiver object when there are no more references to the object.

    Called by the garbage collector on the receiver object when there are no more references to the object.

    The details of when and if the finalize method is invoked, as well as the interaction between finalize and non-local returns and exceptions, are all platform dependent.

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws()
    Note

    not specified by SLS as a member of AnyRef

  67. def find(p: (A) ⇒ Boolean): Option[A]

    Finds the first element of the mutable queue satisfying a predicate, if any.

    Finds the first element of the mutable queue satisfying a predicate, if any.

    p

    the predicate used to test elements.

    returns

    an option value containing the first element in the mutable queue that satisfies p, or None if none exists.

    Definition Classes
    LinearSeqOptimizedIterableLikeTraversableLikeTraversableOnceGenTraversableOnce
  68. var first0: LinkedList[A]

    Attributes
    protected
    Definition Classes
    MutableList
  69. def flatMap[B](f: (A) ⇒ GenTraversableOnce[B]): Queue[B]

    [use case] Builds a new collection by applying a function to all elements of this mutable queue and using the elements of the resulting collections.

    [use case]

    Builds a new collection by applying a function to all elements of this mutable queue and using the elements of the resulting collections.

    For example:

    def getWords(lines: Seq[String]): Seq[String] = lines flatMap (line => line split "\\W+")

    The type of the resulting collection is guided by the static type of mutable queue. This might cause unexpected results sometimes. For example:

    // lettersOf will return a Seq[Char] of likely repeated letters, instead of a Set
    def lettersOf(words: Seq[String]) = words flatMap (word => word.toSet)
    
    // lettersOf will return a Set[Char], not a Seq
    def lettersOf(words: Seq[String]) = words.toSet flatMap (word => word.toSeq)
    
    // xs will be a an Iterable[Int]
    val xs = Map("a" -> List(11,111), "b" -> List(22,222)).flatMap(_._2)
    
    // ys will be a Map[Int, Int]
    val ys = Map("a" -> List(1 -> 11,1 -> 111), "b" -> List(2 -> 22,2 -> 222)).flatMap(_._2)
    B

    the element type of the returned collection.

    f

    the function to apply to each element.

    returns

    a new mutable queue resulting from applying the given collection-valued function f to each element of this mutable queue and concatenating the results.

    Definition Classes
    TraversableLikeGenTraversableLikeFilterMonadic
    Full Signature

    def flatMap[B, That](f: (A) ⇒ GenTraversableOnce[B])(implicit bf: CanBuildFrom[Queue[A], B, That]): That

  70. def flatten[B]: Queue[B]

    [use case] Converts this mutable queue of traversable collections into a mutable queue formed by the elements of these traversable collections.

    [use case]

    Converts this mutable queue of traversable collections into a mutable queue formed by the elements of these traversable collections.

    The resulting collection's type will be guided by the static type of mutable queue. For example:

    val xs = List(Set(1, 2, 3), Set(1, 2, 3))
    // xs == List(1, 2, 3, 1, 2, 3)
    
    val ys = Set(List(1, 2, 3), List(3, 2, 1))
    // ys == Set(1, 2, 3)
    B

    the type of the elements of each traversable collection.

    returns

    a new mutable queue resulting from concatenating all element mutable queues.

    Definition Classes
    GenericTraversableTemplate
    Full Signature

    def flatten[B](implicit asTraversable: (A) ⇒ GenTraversableOnce[B]): Queue[B]

  71. def fold[A1 >: A](z: A1)(op: (A1, A1) ⇒ A1): A1

    Folds the elements of this mutable queue using the specified associative binary operator.

    Folds the elements of this mutable queue using the specified associative binary operator.

    The order in which operations are performed on elements is unspecified and may be nondeterministic.

    A1

    a type parameter for the binary operator, a supertype of A.

    z

    a neutral element for the fold operation; may be added to the result an arbitrary number of times, and must not change the result (e.g., Nil for list concatenation, 0 for addition, or 1 for multiplication.)

    op

    a binary operator that must be associative

    returns

    the result of applying fold operator op between all the elements and z

    Definition Classes
    TraversableOnceGenTraversableOnce
  72. def foldLeft[B](z: B)(f: (B, A) ⇒ B): B

    Applies a binary operator to a start value and all elements of this mutable queue, going left to right.

    Applies a binary operator to a start value and all elements of this mutable queue, going left to right.

    B

    the result type of the binary operator.

    z

    the start value.

    returns

    the result of inserting op between consecutive elements of this mutable queue, going left to right with the start value z on the left:

    op(...op(z, x_1), x_2, ..., x_n)

    where x1, ..., xn are the elements of this mutable queue.

    Definition Classes
    LinearSeqOptimizedTraversableOnceGenTraversableOnce
  73. def foldRight[B](z: B)(f: (A, B) ⇒ B): B

    Applies a binary operator to all elements of this mutable queue and a start value, going right to left.

    Applies a binary operator to all elements of this mutable queue and a start value, going right to left.

    B

    the result type of the binary operator.

    z

    the start value.

    returns

    the result of inserting op between consecutive elements of this mutable queue, going right to left with the start value z on the right:

    op(x_1, op(x_2, ... op(x_n, z)...))

    where x1, ..., xn are the elements of this mutable queue.

    Definition Classes
    LinearSeqOptimizedIterableLikeTraversableOnceGenTraversableOnce
  74. def forall(p: (A) ⇒ Boolean): Boolean

    Tests whether a predicate holds for all elements of this mutable queue.

    Tests whether a predicate holds for all elements of this mutable queue.

    p

    the predicate used to test elements.

    returns

    true if the given predicate p holds for all elements of this mutable queue, otherwise false.

    Definition Classes
    LinearSeqOptimizedIterableLikeTraversableLikeTraversableOnceGenTraversableOnce
  75. def foreach(f: (A) ⇒ Unit): Unit

    [use case] Applies a function f to all elements of this mutable queue.

    [use case]

    Applies a function f to all elements of this mutable queue.

    Note: this method underlies the implementation of most other bulk operations. Subclasses should re-implement this method if a more efficient implementation exists.

    f

    the function that is applied for its side-effect to every element. The result of function f is discarded.

    Definition Classes
    LinearSeqOptimizedIterableLikeTraversableLikeGenTraversableLikeTraversableOnceGenTraversableOnceFilterMonadic
    Full Signature

    def foreach[B](f: (A) ⇒ B): Unit

  76. def formatted(fmtstr: String): String

    Returns string formatted according to given format string.

    Returns string formatted according to given format string. Format strings are as for String.format (@see java.lang.String.format).

    Implicit information
    This member is added by an implicit conversion from Queue[A] to StringFormat performed by method any2stringfmt in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()
  77. def front: A

    Returns the first element in the queue, or throws an error if there is no element contained in the queue.

    Returns the first element in the queue, or throws an error if there is no element contained in the queue.

    returns

    the first element.

  78. def genericBuilder[B]: Builder[B, Queue[B]]

    The generic builder that builds instances of mutable.Queue at arbitrary element types.

    The generic builder that builds instances of mutable.Queue at arbitrary element types.

    Definition Classes
    GenericTraversableTemplate
  79. def get(n: Int): Option[A]

    Returns the n-th element of this list or None if index does not exist.

    Returns the n-th element of this list or None if index does not exist.

    Definition Classes
    MutableList
  80. final def getClass(): Class[_]

    A representation that corresponds to the dynamic class of the receiver object.

    A representation that corresponds to the dynamic class of the receiver object.

    The nature of the representation is platform dependent.

    returns

    a representation that corresponds to the dynamic class of the receiver object.

    Definition Classes
    AnyRef → Any
    Note

    not specified by SLS as a member of AnyRef

  81. def groupBy[K](f: (A) ⇒ K): immutable.Map[K, Queue[A]]

    Partitions this mutable queue into a map of mutable queues according to some discriminator function.

    Partitions this mutable queue into a map of mutable queues according to some discriminator function.

    Note: this method is not re-implemented by views. This means when applied to a view it will always force the view and return a new mutable queue.

    K

    the type of keys returned by the discriminator function.

    f

    the discriminator function.

    returns

    A map from keys to mutable queues such that the following invariant holds:

    (xs partition f)(k) = xs filter (x => f(x) == k)

    That is, every key k is bound to a mutable queue of those elements x for which f(x) equals k.

    Definition Classes
    TraversableLikeGenTraversableLike
  82. def grouped(size: Int): Iterator[Queue[A]]

    Partitions elements in fixed size mutable queues.

    Partitions elements in fixed size mutable queues.

    size

    the number of elements per group

    returns

    An iterator producing mutable queues of size size, except the last will be truncated if the elements don't divide evenly.

    Definition Classes
    IterableLike
    See also

    scala.collection.Iterator, method grouped

  83. def hasDefiniteSize: Boolean

    Tests whether this mutable queue is known to have a finite size.

    Tests whether this mutable queue is known to have a finite size. All strict collections are known to have finite size. For a non-strict collection such as Stream, the predicate returns true if all elements have been computed. It returns false if the stream is not yet evaluated to the end.

    Note: many collection methods will not work on collections of infinite sizes.

    returns

    true if this collection is known to have finite size, false otherwise.

    Definition Classes
    TraversableLikeTraversableOnceGenTraversableOnce
  84. def hashCode(): Int

    Hashcodes for mutable.Queue produce a value from the hashcodes of all the elements of the mutable queue.

    Hashcodes for mutable.Queue produce a value from the hashcodes of all the elements of the mutable queue.

    returns

    the hash code value for this object.

    Definition Classes
    LinearSeqLikeGenSeqLike → AnyRef → Any
  85. def head: A

    Returns the first element in this list

    Returns the first element in this list

    returns

    the first element of this mutable queue.

    Definition Classes
    MutableListLinearSeqOptimizedIterableLikeGenericTraversableTemplateTraversableLikeGenTraversableLike
  86. def headOption: Option[A]

    Optionally selects the first element.

    Optionally selects the first element.

    returns

    the first element of this mutable queue if it is nonempty, None if it is empty.

    Definition Classes
    TraversableLikeGenTraversableLike
  87. def ifParSeq[R](isbody: (ParSeq[A]) ⇒ R): (TraversableOps[A])#Otherwise[R]

    Implicit information
    This member is added by an implicit conversion from Queue[A] to TraversableOps[A] performed by method traversable2ops in scala.collection.parallel.
    Definition Classes
    TraversableOps
  88. def indexOf(elem: A, from: Int): Int

    [use case] Finds index of first occurrence of some value in this mutable queue after or at some start index.

    [use case]

    Finds index of first occurrence of some value in this mutable queue after or at some start index.

    elem

    the element value to search for.

    from

    the start index

    returns

    the index >= from of the first element of this mutable queue that is equal (as determined by ==) to elem, or -1, if none exists.

    Definition Classes
    GenSeqLike
    Full Signature

    def indexOf[B >: A](elem: B, from: Int): Int

  89. def indexOf(elem: A): Int

    [use case] Finds index of first occurrence of some value in this mutable queue.

    [use case]

    Finds index of first occurrence of some value in this mutable queue.

    elem

    the element value to search for.

    returns

    the index of the first element of this mutable queue that is equal (as determined by ==) to elem, or -1, if none exists.

    Definition Classes
    GenSeqLike
    Full Signature

    def indexOf[B >: A](elem: B): Int

  90. def indexOfSlice[B >: A](that: GenSeq[B], from: Int): Int

    Finds first index after or at a start index where this mutable queue contains a given sequence as a slice.

    Finds first index after or at a start index where this mutable queue contains a given sequence as a slice.

    that

    the sequence to test

    from

    the start index

    returns

    the first index >= from such that the elements of this mutable queue starting at this index match the elements of sequence that, or -1 of no such subsequence exists.

    Definition Classes
    SeqLike
  91. def indexOfSlice[B >: A](that: GenSeq[B]): Int

    Finds first index where this mutable queue contains a given sequence as a slice.

    Finds first index where this mutable queue contains a given sequence as a slice.

    that

    the sequence to test

    returns

    the first index such that the elements of this mutable queue starting at this index match the elements of sequence that, or -1 of no such subsequence exists.

    Definition Classes
    SeqLike
  92. def indexWhere(p: (A) ⇒ Boolean, from: Int): Int

    Finds index of the first element satisfying some predicate after or at some start index.

    Finds index of the first element satisfying some predicate after or at some start index.

    p

    the predicate used to test elements.

    from

    the start index

    returns

    the index >= from of the first element of this mutable queue that satisfies the predicate p, or -1, if none exists.

    Definition Classes
    LinearSeqOptimizedSeqLikeGenSeqLike
  93. def indexWhere(p: (A) ⇒ Boolean): Int

    Finds index of first element satisfying some predicate.

    Finds index of first element satisfying some predicate.

    p

    the predicate used to test elements.

    returns

    the index of the first element of this mutable queue that satisfies the predicate p, or -1, if none exists.

    Definition Classes
    GenSeqLike
  94. def indices: immutable.Range

    Produces the range of all indices of this sequence.

    Produces the range of all indices of this sequence.

    returns

    a Range value from 0 to one less than the length of this mutable queue.

    Definition Classes
    SeqLike
  95. def init: Queue[A]

    Selects all elements except the last.

    Selects all elements except the last.

    returns

    a mutable queue consisting of all elements of this mutable queue except the last one.

    Definition Classes
    TraversableLikeGenTraversableLike
    Exceptions thrown
    `UnsupportedOperationException`

    if the mutable queue is empty.

  96. def inits: Iterator[Queue[A]]

    Iterates over the inits of this mutable queue.

    Iterates over the inits of this mutable queue. The first value will be this mutable queue and the final one will be an empty mutable queue, with the intervening values the results of successive applications of init.

    returns

    an iterator over all the inits of this mutable queue

    Definition Classes
    TraversableLike
    Example:
    1. List(1,2,3).inits = Iterator(List(1,2,3), List(1,2), List(1), Nil)

  97. def intersect(that: collection.Seq[A]): Queue[A]

    [use case] Computes the multiset intersection between this mutable queue and another sequence.

    [use case]

    Computes the multiset intersection between this mutable queue and another sequence.

    that

    the sequence of elements to intersect with.

    returns

    a new mutable queue which contains all elements of this mutable queue which also appear in that. If an element value x appears n times in that, then the first n occurrences of x will be retained in the result, but any following occurrences will be omitted.

    Definition Classes
    SeqLikeGenSeqLike
    Full Signature

    def intersect[B >: A](that: GenSeq[B]): Queue[A]

  98. def isDefinedAt(x: Int): Boolean

    Tests whether this mutable queue contains given index.

    Tests whether this mutable queue contains given index.

    The implementations of methods apply and isDefinedAt turn a Seq[A] into a PartialFunction[Int, A].

    returns

    true if this mutable queue contains an element at position idx, false otherwise.

    Definition Classes
    LinearSeqOptimizedGenSeqLike
  99. def isEmpty: Boolean

    Is the list empty?

    Is the list empty?

    returns

    true if the mutable queue contain no elements, false otherwise.

    Definition Classes
    MutableListLinearSeqOptimizedSeqLikeIterableLikeGenericTraversableTemplateTraversableLikeTraversableOnceGenTraversableOnce
  100. final def isInstanceOf[T0]: Boolean

    Test whether the dynamic type of the receiver object is T0.

    Test whether the dynamic type of the receiver object is T0.

    Note that the result of the test is modulo Scala's erasure semantics. Therefore the expression 1.isInstanceOf[String] will return false, while the expression List(1).isInstanceOf[List[String]] will return true. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the specified type.

    returns

    true if the receiver object is an instance of erasure of type T0; false otherwise.

    Definition Classes
    Any
  101. def isParIterable: Boolean

    Implicit information
    This member is added by an implicit conversion from Queue[A] to TraversableOps[A] performed by method traversable2ops in scala.collection.parallel.
    Definition Classes
    TraversableOps
  102. def isParSeq: Boolean

    Implicit information
    This member is added by an implicit conversion from Queue[A] to TraversableOps[A] performed by method traversable2ops in scala.collection.parallel.
    Definition Classes
    TraversableOps
  103. def isParallel: Boolean

    Implicit information
    This member is added by an implicit conversion from Queue[A] to TraversableOps[A] performed by method traversable2ops in scala.collection.parallel.
    Definition Classes
    TraversableOps
  104. final def isTraversableAgain: Boolean

    Tests whether this mutable queue can be repeatedly traversed.

    Tests whether this mutable queue can be repeatedly traversed.

    returns

    true

    Definition Classes
    TraversableLikeGenTraversableLikeGenTraversableOnce
  105. def iterator: Iterator[A]

    Returns an iterator over all elements of this list.

    Returns an iterator over all elements of this list.

    returns

    the new iterator

    Definition Classes
    MutableListLinearSeqLikeIterableLikeGenIterableLike
  106. def last: A

    Selects the last element.

    Selects the last element.

    returns

    The last element of this mutable queue.

    Definition Classes
    MutableListLinearSeqOptimizedTraversableLikeGenTraversableLike
    Exceptions thrown
    NoSuchElementException

    If the mutable queue is empty.

  107. var last0: LinkedList[A]

    Attributes
    protected
    Definition Classes
    MutableList
  108. def lastIndexOf(elem: A, end: Int): Int

    [use case] Finds index of last occurrence of some value in this mutable queue before or at a given end index.

    [use case]

    Finds index of last occurrence of some value in this mutable queue before or at a given end index.

    elem

    the element value to search for.

    end

    the end index.

    returns

    the index <= end of the last element of this mutable queue that is equal (as determined by ==) to elem, or -1, if none exists.

    Definition Classes
    GenSeqLike
    Full Signature

    def lastIndexOf[B >: A](elem: B, end: Int): Int

  109. def lastIndexOf(elem: A): Int

    [use case] Finds index of last occurrence of some value in this mutable queue.

    [use case]

    Finds index of last occurrence of some value in this mutable queue.

    elem

    the element value to search for.

    returns

    the index of the last element of this mutable queue that is equal (as determined by ==) to elem, or -1, if none exists.

    Definition Classes
    GenSeqLike
    Full Signature

    def lastIndexOf[B >: A](elem: B): Int

  110. def lastIndexOfSlice[B >: A](that: GenSeq[B], end: Int): Int

    Finds last index before or at a given end index where this mutable queue contains a given sequence as a slice.

    Finds last index before or at a given end index where this mutable queue contains a given sequence as a slice.

    that

    the sequence to test

    end

    the end index

    returns

    the last index <= end such that the elements of this mutable queue starting at this index match the elements of sequence that, or -1 of no such subsequence exists.

    Definition Classes
    SeqLike
  111. def lastIndexOfSlice[B >: A](that: GenSeq[B]): Int

    Finds last index where this mutable queue contains a given sequence as a slice.

    Finds last index where this mutable queue contains a given sequence as a slice.

    that

    the sequence to test

    returns

    the last index such that the elements of this mutable queue starting a this index match the elements of sequence that, or -1 of no such subsequence exists.

    Definition Classes
    SeqLike
  112. def lastIndexWhere(p: (A) ⇒ Boolean, end: Int): Int

    Finds index of last element satisfying some predicate before or at given end index.

    Finds index of last element satisfying some predicate before or at given end index.

    p

    the predicate used to test elements.

    returns

    the index <= end of the last element of this mutable queue that satisfies the predicate p, or -1, if none exists.

    Definition Classes
    LinearSeqOptimizedSeqLikeGenSeqLike
  113. def lastIndexWhere(p: (A) ⇒ Boolean): Int

    Finds index of last element satisfying some predicate.

    Finds index of last element satisfying some predicate.

    p

    the predicate used to test elements.

    returns

    the index of the last element of this mutable queue that satisfies the predicate p, or -1, if none exists.

    Definition Classes
    GenSeqLike
  114. def lastOption: Option[A]

    Optionally selects the last element.

    Optionally selects the last element.

    returns

    the last element of this mutable queue$ if it is nonempty, None if it is empty.

    Definition Classes
    TraversableLikeGenTraversableLike
  115. var len: Int

    Attributes
    protected
    Definition Classes
    MutableList
  116. def length: Int

    Returns the length of this list.

    Returns the length of this list.

    returns

    the number of elements in this mutable queue.

    Definition Classes
    MutableListLinearSeqOptimizedSeqLikeGenSeqLike
  117. def lengthCompare(len: Int): Int

    Compares the length of this mutable queue to a test value.

    Compares the length of this mutable queue to a test value.

    len

    the test value that gets compared with the length.

    returns

    A value x where

    x <  0       if this.length <  len
    x == 0       if this.length == len
    x >  0       if this.length >  len

    The method as implemented here does not call length directly; its running time is O(length min len) instead of O(length). The method should be overwritten if computing length is cheap.

    Definition Classes
    LinearSeqOptimizedSeqLike
  118. def lift: (Int) ⇒ Option[A]

    Turns this partial function into an plain function returning an Option result.

    Turns this partial function into an plain function returning an Option result.

    returns

    a function that takes an argument x to Some(this(x)) if this is defined for x, and to None otherwise.

    Definition Classes
    PartialFunction
    See also

    Function.unlift

  119. def map[B](f: (A) ⇒ B): Queue[B]

    [use case] Builds a new collection by applying a function to all elements of this mutable queue.

    [use case]

    Builds a new collection by applying a function to all elements of this mutable queue.

    B

    the element type of the returned collection.

    f

    the function to apply to each element.

    returns

    a new mutable queue resulting from applying the given function f to each element of this mutable queue and collecting the results.

    Definition Classes
    TraversableLikeGenTraversableLikeFilterMonadic
    Full Signature

    def map[B, That](f: (A) ⇒ B)(implicit bf: CanBuildFrom[Queue[A], B, That]): That

  120. def mapResult[NewTo](f: (MutableList[A]) ⇒ NewTo): Builder[A, NewTo]

    Creates a new builder by applying a transformation function to the results of this builder.

    Creates a new builder by applying a transformation function to the results of this builder.

    NewTo

    the type of collection returned by f.

    f

    the transformation function.

    returns

    a new builder which is the same as the current builder except that a transformation function is applied to this builder's result.

    Definition Classes
    Builder
  121. def max: A

    [use case] Finds the largest element.

    [use case]

    Finds the largest element.

    returns

    the largest element of this mutable queue.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def max[B >: A](implicit cmp: Ordering[B]): A

  122. def maxBy[B](f: (A) ⇒ B)(implicit cmp: Ordering[B]): A

    Definition Classes
    TraversableOnceGenTraversableOnce
  123. def min: A

    [use case] Finds the smallest element.

    [use case]

    Finds the smallest element.

    returns

    the smallest element of this mutable queue

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def min[B >: A](implicit cmp: Ordering[B]): A

  124. def minBy[B](f: (A) ⇒ B)(implicit cmp: Ordering[B]): A

    Definition Classes
    TraversableOnceGenTraversableOnce
  125. def mkString: String

    Displays all elements of this mutable queue in a string.

    Displays all elements of this mutable queue in a string.

    returns

    a string representation of this mutable queue. In the resulting string the string representations (w.r.t. the method toString) of all elements of this mutable queue follow each other without any separator string.

    Definition Classes
    TraversableOnceGenTraversableOnce
  126. def mkString(sep: String): String

    Displays all elements of this mutable queue in a string using a separator string.

    Displays all elements of this mutable queue in a string using a separator string.

    sep

    the separator string.

    returns

    a string representation of this mutable queue. In the resulting string the string representations (w.r.t. the method toString) of all elements of this mutable queue are separated by the string sep.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Example:
    1. List(1, 2, 3).mkString("|") = "1|2|3"

  127. def mkString(start: String, sep: String, end: String): String

    Displays all elements of this mutable queue in a string using start, end, and separator strings.

    Displays all elements of this mutable queue in a string using start, end, and separator strings.

    start

    the starting string.

    sep

    the separator string.

    end

    the ending string.

    returns

    a string representation of this mutable queue. The resulting string begins with the string start and ends with the string end. Inside, the string representations (w.r.t. the method toString) of all elements of this mutable queue are separated by the string sep.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Example:
    1. List(1, 2, 3).mkString("(", "; ", ")") = "(1; 2; 3)"

  128. final def ne(arg0: AnyRef): Boolean

    Equivalent to !(this eq that).

    Equivalent to !(this eq that).

    returns

    true if the argument is not a reference to the receiver object; false otherwise.

    Definition Classes
    AnyRef
  129. def newBuilder: Builder[A, Queue[A]]

    The builder that builds instances of type mutable.Queue[A]

    The builder that builds instances of type mutable.Queue[A]

    Attributes
    protected[this]
    Definition Classes
    QueueMutableListGenericTraversableTemplateTraversableLikeHasNewBuilder
  130. def nonEmpty: Boolean

    Tests whether the mutable queue is not empty.

    Tests whether the mutable queue is not empty.

    returns

    true if the mutable queue contains at least one element, false otherwise.

    Definition Classes
    TraversableOnceGenTraversableOnce
  131. final def notify(): Unit

    Wakes up a single thread that is waiting on the receiver object's monitor.

    Wakes up a single thread that is waiting on the receiver object's monitor.

    Definition Classes
    AnyRef
    Note

    not specified by SLS as a member of AnyRef

  132. final def notifyAll(): Unit

    Wakes up all threads that are waiting on the receiver object's monitor.

    Wakes up all threads that are waiting on the receiver object's monitor.

    Definition Classes
    AnyRef
    Note

    not specified by SLS as a member of AnyRef

  133. def orElse[A1 <: Int, B1 >: A](that: PartialFunction[A1, B1]): PartialFunction[A1, B1]

    Composes this partial function with a fallback partial function which gets applied where this partial function is not defined.

    Composes this partial function with a fallback partial function which gets applied where this partial function is not defined.

    A1

    the argument type of the fallback function

    B1

    the result type of the fallback function

    that

    the fallback function

    returns

    a partial function which has as domain the union of the domains of this partial function and that. The resulting partial function takes x to this(x) where this is defined, and to that(x) where it is not.

    Definition Classes
    PartialFunction
  134. def padTo(len: Int, elem: A): Queue[A]

    [use case] A copy of this mutable queue with an element value appended until a given target length is reached.

    [use case]

    A copy of this mutable queue with an element value appended until a given target length is reached.

    len

    the target length

    elem

    the padding value

    returns

    a new mutable queue consisting of all elements of this mutable queue followed by the minimal number of occurrences of elem so that the resulting mutable queue has a length of at least len.

    Definition Classes
    SeqLikeGenSeqLike
    Full Signature

    def padTo[B >: A, That](len: Int, elem: B)(implicit bf: CanBuildFrom[Queue[A], B, That]): That

  135. def par: ParSeq[A]

    Returns a parallel implementation of this collection.

    Returns a parallel implementation of this collection.

    For most collection types, this method creates a new parallel collection by copying all the elements. For these collection, par takes linear time. Mutable collections in this category do not produce a mutable parallel collection that has the same underlying dataset, so changes in one collection will not be reflected in the other one.

    Specific collections (e.g. ParArray or mutable.ParHashMap) override this default behaviour by creating a parallel collection which shares the same underlying dataset. For these collections, par takes constant or sublinear time.

    All parallel collections return a reference to themselves.

    returns

    a parallel implementation of this collection

    Definition Classes
    Parallelizable
  136. def parCombiner: Combiner[A, ParSeq[A]]

    The default par implementation uses the combiner provided by this method to create a new parallel collection.

    The default par implementation uses the combiner provided by this method to create a new parallel collection.

    returns

    a combiner for the parallel collection of type ParRepr

    Attributes
    protected[this]
    Definition Classes
    SeqLikeSeqLikeTraversableLikeParallelizable
  137. def partition(p: (A) ⇒ Boolean): (Queue[A], Queue[A])

    Partitions this mutable queue in two mutable queues according to a predicate.

    Partitions this mutable queue in two mutable queues according to a predicate.

    p

    the predicate on which to partition.

    returns

    a pair of mutable queues: the first mutable queue consists of all elements that satisfy the predicate p and the second mutable queue consists of all elements that don't. The relative order of the elements in the resulting mutable queues is the same as in the original mutable queue.

    Definition Classes
    TraversableLikeGenTraversableLike
  138. def patch(from: Int, that: GenSeq[A], replaced: Int): Queue[A]

    [use case] Produces a new mutable queue where a slice of elements in this mutable queue is replaced by another sequence.

    [use case]

    Produces a new mutable queue where a slice of elements in this mutable queue is replaced by another sequence.

    from

    the index of the first replaced element

    replaced

    the number of elements to drop in the original mutable queue

    returns

    a new mutable queue consisting of all elements of this mutable queue except that replaced elements starting from from are replaced by patch.

    Definition Classes
    SeqLikeGenSeqLike
    Full Signature

    def patch[B >: A, That](from: Int, patch: GenSeq[B], replaced: Int)(implicit bf: CanBuildFrom[Queue[A], B, That]): That

  139. def permutations: Iterator[Queue[A]]

    Iterates over distinct permutations.

    Iterates over distinct permutations.

    returns

    An Iterator which traverses the distinct permutations of this mutable queue.

    Definition Classes
    SeqLike
    Example:
    1. "abb".permutations = Iterator(abb, bab, bba)

  140. def prefixLength(p: (A) ⇒ Boolean): Int

    Returns the length of the longest prefix whose elements all satisfy some predicate.

    Returns the length of the longest prefix whose elements all satisfy some predicate.

    p

    the predicate used to test elements.

    returns

    the length of the longest prefix of this mutable queue such that every element of the segment satisfies the predicate p.

    Definition Classes
    GenSeqLike
  141. def prependElem(elem: A): Unit

    Attributes
    protected
    Definition Classes
    MutableList
  142. def product: A

    [use case] Multiplies up the elements of this collection.

    [use case]

    Multiplies up the elements of this collection.

    returns

    the product of all elements in this mutable queue of numbers of type Int. Instead of Int, any other type T with an implicit Numeric[T] implementation can be used as element type of the mutable queue and as result type of product. Examples of such types are: Long, Float, Double, BigInt.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def product[B >: A](implicit num: Numeric[B]): B

  143. def reduce[A1 >: A](op: (A1, A1) ⇒ A1): A1

    Reduces the elements of this mutable queue using the specified associative binary operator.

    Reduces the elements of this mutable queue using the specified associative binary operator.

    The order in which operations are performed on elements is unspecified and may be nondeterministic.

    A1

    A type parameter for the binary operator, a supertype of A.

    op

    A binary operator that must be associative.

    returns

    The result of applying reduce operator op between all the elements if the mutable queue is nonempty.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Exceptions thrown
    UnsupportedOperationException

    if this mutable queue is empty.

  144. def reduceLeft[B >: A](f: (B, A) ⇒ B): B

    Applies a binary operator to all elements of this mutable queue, going left to right.

    Applies a binary operator to all elements of this mutable queue, going left to right.

    B

    the result type of the binary operator.

    returns

    the result of inserting op between consecutive elements of this mutable queue, going left to right:

    op( op( ... op(x_1, x_2) ..., x_{n-1}), x_n)

    where x1, ..., xn are the elements of this mutable queue.

    Definition Classes
    LinearSeqOptimizedTraversableOnce
    Exceptions thrown
    `UnsupportedOperationException`

    if this mutable queue is empty.

  145. def reduceLeftOption[B >: A](op: (B, A) ⇒ B): Option[B]

    Optionally applies a binary operator to all elements of this mutable queue, going left to right.

    Optionally applies a binary operator to all elements of this mutable queue, going left to right.

    B

    the result type of the binary operator.

    op

    the binary operator.

    returns

    an option value containing the result of reduceLeft(op) is this mutable queue is nonempty, None otherwise.

    Definition Classes
    TraversableOnceGenTraversableOnce
  146. def reduceOption[A1 >: A](op: (A1, A1) ⇒ A1): Option[A1]

    Reduces the elements of this mutable queue, if any, using the specified associative binary operator.

    Reduces the elements of this mutable queue, if any, using the specified associative binary operator.

    The order in which operations are performed on elements is unspecified and may be nondeterministic.

    A1

    A type parameter for the binary operator, a supertype of A.

    op

    A binary operator that must be associative.

    returns

    An option value containing result of applying reduce operator op between all the elements if the collection is nonempty, and None otherwise.

    Definition Classes
    TraversableOnceGenTraversableOnce
  147. def reduceRight[B >: A](op: (A, B) ⇒ B): B

    Applies a binary operator to all elements of this mutable queue, going right to left.

    Applies a binary operator to all elements of this mutable queue, going right to left.

    B

    the result type of the binary operator.

    op

    the binary operator.

    returns

    the result of inserting op between consecutive elements of this mutable queue, going right to left:

    op(x_1, op(x_2, ..., op(x_{n-1}, x_n)...))

    where x1, ..., xn are the elements of this mutable queue.

    Definition Classes
    LinearSeqOptimizedIterableLikeTraversableOnceGenTraversableOnce
    Exceptions thrown
    `UnsupportedOperationException`

    if this mutable queue is empty.

  148. def reduceRightOption[B >: A](op: (A, B) ⇒ B): Option[B]

    Optionally applies a binary operator to all elements of this mutable queue, going right to left.

    Optionally applies a binary operator to all elements of this mutable queue, going right to left.

    B

    the result type of the binary operator.

    op

    the binary operator.

    returns

    an option value containing the result of reduceRight(op) is this mutable queue is nonempty, None otherwise.

    Definition Classes
    TraversableOnceGenTraversableOnce
  149. def repr: Queue[A]

    The collection of type mutable queue underlying this TraversableLike object.

    The collection of type mutable queue underlying this TraversableLike object. By default this is implemented as the TraversableLike object itself, but this can be overridden.

    Definition Classes
    TraversableLikeGenTraversableLike
  150. def result(): MutableList[A]

    Produces a collection from the added elements.

    Produces a collection from the added elements. The builder's contents are undefined after this operation.

    returns

    a collection containing the elements added to this builder.

    Definition Classes
    MutableListBuilder
  151. def reverse: Queue[A]

    Returns new mutable queue wih elements in reversed order.

    Returns new mutable queue wih elements in reversed order.

    returns

    A new mutable queue with all elements of this mutable queue in reversed order.

    Definition Classes
    SeqLikeGenSeqLike
  152. def reverseIterator: Iterator[A]

    An iterator yielding elements in reversed order.

    An iterator yielding elements in reversed order.

    Note: xs.reverseIterator is the same as xs.reverse.iterator but might be more efficient.

    returns

    an iterator yielding the elements of this mutable queue in reversed order

    Definition Classes
    SeqLike
  153. def reverseMap[B](f: (A) ⇒ B): Queue[B]

    [use case] Builds a new collection by applying a function to all elements of this mutable queue and collecting the results in reversed order.

    [use case]

    Builds a new collection by applying a function to all elements of this mutable queue and collecting the results in reversed order.

    Note: xs.reverseMap(f) is the same as xs.reverse.map(f) but might be more efficient.

    B

    the element type of the returned collection.

    f

    the function to apply to each element.

    returns

    a new mutable queue resulting from applying the given function f to each element of this mutable queue and collecting the results in reversed order.

    Definition Classes
    SeqLikeGenSeqLike
    Full Signature

    def reverseMap[B, That](f: (A) ⇒ B)(implicit bf: CanBuildFrom[Queue[A], B, That]): That

  154. def reversed: List[A]

    Attributes
    protected[this]
    Definition Classes
    TraversableOnce
  155. def runWith[U](action: (A) ⇒ U): (Int) ⇒ Boolean

    Composes this partial function with an action function which gets applied to results of this partial function.

    Composes this partial function with an action function which gets applied to results of this partial function. The action function is invoked only for its side effects; its result is ignored.

    Note that expression pf.runWith(action)(x) is equivalent to

    if(pf isDefinedAt x) { action(pf(x)); true } else false

    except that runWith is implemented via applyOrElse and thus potentially more efficient. Using runWith avoids double evaluation of pattern matchers and guards for partial function literals.

    action

    the action function

    returns

    a function which maps arguments x to isDefinedAt(x). The resulting function runs action(this(x)) where this is defined.

    Definition Classes
    PartialFunction
    Since

    2.10

    See also

    applyOrElse.

  156. def sameElements(that: GenIterable[A]): Boolean

    [use case] Checks if the other iterable collection contains the same elements in the same order as this mutable queue.

    [use case]

    Checks if the other iterable collection contains the same elements in the same order as this mutable queue.

    that

    the collection to compare with.

    returns

    true, if both collections contain the same elements in the same order, false otherwise.

    Definition Classes
    LinearSeqOptimizedIterableLikeGenIterableLike
    Full Signature

    def sameElements[B >: A](that: GenIterable[B]): Boolean

  157. def scan[B >: A, That](z: B)(op: (B, B) ⇒ B)(implicit cbf: CanBuildFrom[Queue[A], B, That]): That

    Computes a prefix scan of the elements of the collection.

    Computes a prefix scan of the elements of the collection.

    Note: The neutral element z may be applied more than once.

    B

    element type of the resulting collection

    That

    type of the resulting collection

    z

    neutral element for the operator op

    op

    the associative operator for the scan

    cbf

    combiner factory which provides a combiner

    returns

    a new mutable queue containing the prefix scan of the elements in this mutable queue

    Definition Classes
    TraversableLikeGenTraversableLike
  158. def scanLeft[B, That](z: B)(op: (B, A) ⇒ B)(implicit bf: CanBuildFrom[Queue[A], B, That]): That

    Produces a collection containing cumulative results of applying the operator going left to right.

    Produces a collection containing cumulative results of applying the operator going left to right.

    B

    the type of the elements in the resulting collection

    That

    the actual type of the resulting collection

    z

    the initial value

    op

    the binary operator applied to the intermediate result and the element

    bf

    an implicit value of class CanBuildFrom which determines the result class That from the current representation type Repr and the new element type B.

    returns

    collection with intermediate results

    Definition Classes
    TraversableLikeGenTraversableLike
  159. def scanRight[B, That](z: B)(op: (A, B) ⇒ B)(implicit bf: CanBuildFrom[Queue[A], B, That]): That

    Produces a collection containing cumulative results of applying the operator going right to left.

    Produces a collection containing cumulative results of applying the operator going right to left. The head of the collection is the last cumulative result.

    Example:

    List(1, 2, 3, 4).scanRight(0)(_ + _) == List(10, 9, 7, 4, 0)
    B

    the type of the elements in the resulting collection

    That

    the actual type of the resulting collection

    z

    the initial value

    op

    the binary operator applied to the intermediate result and the element

    bf

    an implicit value of class CanBuildFrom which determines the result class That from the current representation type Repr and the new element type B.

    returns

    collection with intermediate results

    Definition Classes
    TraversableLikeGenTraversableLike
    Annotations
    @migration
    Migration

    (Changed in version 2.9.0) The behavior of scanRight has changed. The previous behavior can be reproduced with scanRight.reverse.

  160. def segmentLength(p: (A) ⇒ Boolean, from: Int): Int

    Computes length of longest segment whose elements all satisfy some predicate.

    Computes length of longest segment whose elements all satisfy some predicate.

    p

    the predicate used to test elements.

    from

    the index where the search starts.

    returns

    the length of the longest segment of this mutable queue starting from index from such that every element of the segment satisfies the predicate p.

    Definition Classes
    LinearSeqOptimizedSeqLikeGenSeqLike
  161. def seq: LinearSeq[A]

    A version of this collection with all of the operations implemented sequentially (i.

    A version of this collection with all of the operations implemented sequentially (i.e. in a single-threaded manner).

    This method returns a reference to this collection. In parallel collections, it is redefined to return a sequential implementation of this collection. In both cases, it has O(1) complexity.

    returns

    a sequential view of the collection.

    Definition Classes
    LinearSeqLinearSeqLinearSeqLikeSeqSeqGenSeqGenSeqLikeIterableIterableGenIterableTraversableTraversableGenTraversableParallelizableTraversableOnceGenTraversableOnce
  162. def size: Int

    The size of this mutable queue, equivalent to length.

    The size of this mutable queue, equivalent to length.

    returns

    the number of elements in this mutable queue.

    Definition Classes
    SeqLikeGenTraversableLikeTraversableOnceGenTraversableOnce
  163. def sizeHint(coll: TraversableLike[_, _], delta: Int): Unit

    Gives a hint that one expects the result of this builder to have the same size as the given collection, plus some delta.

    Gives a hint that one expects the result of this builder to have the same size as the given collection, plus some delta. This will provide a hint only if the collection is known to have a cheap size method. Currently this is assumed to be the case if and only if the collection is of type IndexedSeqLike. Some builder classes will optimize their representation based on the hint. However, builder implementations are still required to work correctly even if the hint is wrong, i.e. a different number of elements is added.

    coll

    the collection which serves as a hint for the result's size.

    delta

    a correction to add to the coll.size to produce the size hint.

    Definition Classes
    Builder
  164. def sizeHint(coll: TraversableLike[_, _]): Unit

    Gives a hint that one expects the result of this builder to have the same size as the given collection, plus some delta.

    Gives a hint that one expects the result of this builder to have the same size as the given collection, plus some delta. This will provide a hint only if the collection is known to have a cheap size method. Currently this is assumed to be the case if and only if the collection is of type IndexedSeqLike. Some builder classes will optimize their representation based on the hint. However, builder implementations are still required to work correctly even if the hint is wrong, i.e. a different number of elements is added.

    coll

    the collection which serves as a hint for the result's size.

    Definition Classes
    Builder
  165. def sizeHint(size: Int): Unit

    Gives a hint how many elements are expected to be added when the next result is called.

    Gives a hint how many elements are expected to be added when the next result is called. Some builder classes will optimize their representation based on the hint. However, builder implementations are still required to work correctly even if the hint is wrong, i.e. a different number of elements is added.

    size

    the hint how many elements will be added.

    Definition Classes
    Builder
  166. def sizeHintBounded(size: Int, boundingColl: TraversableLike[_, _]): Unit

    Gives a hint how many elements are expected to be added when the next result is called, together with an upper bound given by the size of some other collection.

    Gives a hint how many elements are expected to be added when the next result is called, together with an upper bound given by the size of some other collection. Some builder classes will optimize their representation based on the hint. However, builder implementations are still required to work correctly even if the hint is wrong, i.e. a different number of elements is added.

    size

    the hint how many elements will be added.

    boundingColl

    the bounding collection. If it is an IndexedSeqLike, then sizes larger than collection's size are reduced.

    Definition Classes
    Builder
  167. def slice(from: Int, until: Int): Queue[A]

    Selects an interval of elements.

    Selects an interval of elements. The returned collection is made up of all elements x which satisfy the invariant:

    from <= indexOf(x) < until
    returns

    a mutable queue containing the elements greater than or equal to index from extending up to (but not including) index until of this mutable queue.

    Definition Classes
    LinearSeqOptimizedIterableLikeTraversableLikeGenTraversableLike
  168. def sliding(size: Int, step: Int): Iterator[Queue[A]]

    Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in grouped.

    Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in grouped.)

    size

    the number of elements per group

    step

    the distance between the first elements of successive groups (defaults to 1)

    returns

    An iterator producing mutable queues of size size, except the last and the only element will be truncated if there are fewer elements than size.

    Definition Classes
    IterableLike
    See also

    scala.collection.Iterator, method sliding

  169. def sliding(size: Int): Iterator[Queue[A]]

    Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in grouped.

    Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in grouped.)

    size

    the number of elements per group

    returns

    An iterator producing mutable queues of size size, except the last and the only element will be truncated if there are fewer elements than size.

    Definition Classes
    IterableLike
    See also

    scala.collection.Iterator, method sliding

  170. def sortBy[B](f: (A) ⇒ B)(implicit ord: math.Ordering[B]): Queue[A]

    Sorts this mutable.Queue according to the Ordering which results from transforming an implicitly given Ordering with a transformation function.

    Sorts this mutable.Queue according to the Ordering which results from transforming an implicitly given Ordering with a transformation function.

    B

    the target type of the transformation f, and the type where the ordering ord is defined.

    f

    the transformation function mapping elements to some other domain B.

    ord

    the ordering assumed on domain B.

    returns

    a mutable queue consisting of the elements of this mutable queue sorted according to the ordering where x < y if ord.lt(f(x), f(y)).

    Definition Classes
    SeqLike
    Example:
    1. val words = "The quick brown fox jumped over the lazy dog".split(' ')
      // this works because scala.Ordering will implicitly provide an Ordering[Tuple2[Int, Char]]
      words.sortBy(x => (x.length, x.head))
      res0: Array[String] = Array(The, dog, fox, the, lazy, over, brown, quick, jumped)
    See also

    scala.math.Ordering

  171. def sortWith(lt: (A, A) ⇒ Boolean): Queue[A]

    Sorts this mutable queue according to a comparison function.

    Sorts this mutable queue according to a comparison function.

    The sort is stable. That is, elements that are equal (as determined by lt) appear in the same order in the sorted sequence as in the original.

    lt

    the comparison function which tests whether its first argument precedes its second argument in the desired ordering.

    returns

    a mutable queue consisting of the elements of this mutable queue sorted according to the comparison function lt.

    Definition Classes
    SeqLike
    Example:
    1. List("Steve", "Tom", "John", "Bob").sortWith(_.compareTo(_) < 0) =
      List("Bob", "John", "Steve", "Tom")
  172. def sorted[B >: A](implicit ord: math.Ordering[B]): Queue[A]

    Sorts this mutable queue according to an Ordering.

    Sorts this mutable queue according to an Ordering.

    The sort is stable. That is, elements that are equal (as determined by lt) appear in the same order in the sorted sequence as in the original.

    ord

    the ordering to be used to compare elements.

    returns

    a mutable queue consisting of the elements of this mutable queue sorted according to the ordering ord.

    Definition Classes
    SeqLike
    See also

    scala.math.Ordering

  173. def span(p: (A) ⇒ Boolean): (Queue[A], Queue[A])

    Splits this mutable queue into a prefix/suffix pair according to a predicate.

    Splits this mutable queue into a prefix/suffix pair according to a predicate.

    Note: c span p is equivalent to (but possibly more efficient than) (c takeWhile p, c dropWhile p), provided the evaluation of the predicate p does not cause any side-effects.

    returns

    a pair consisting of the longest prefix of this mutable queue whose elements all satisfy p, and the rest of this mutable queue.

    Definition Classes
    LinearSeqOptimizedTraversableLikeGenTraversableLike
  174. def splitAt(n: Int): (Queue[A], Queue[A])

    Splits this mutable queue into two at a given position.

    Splits this mutable queue into two at a given position. Note: c splitAt n is equivalent to (but possibly more efficient than) (c take n, c drop n).

    n

    the position at which to split.

    returns

    a pair of mutable queues consisting of the first n elements of this mutable queue, and the other elements.

    Definition Classes
    TraversableLikeGenTraversableLike
  175. def startsWith[B](that: GenSeq[B], offset: Int): Boolean

    Tests whether this mutable queue contains the given sequence at a given index.

    Tests whether this mutable queue contains the given sequence at a given index.

    Note: If the both the receiver object this and the argument that are infinite sequences this method may not terminate.

    that

    the sequence to test

    offset

    the index where the sequence is searched.

    returns

    true if the sequence that is contained in this mutable queue at index offset, otherwise false.

    Definition Classes
    SeqLikeGenSeqLike
  176. def startsWith[B](that: GenSeq[B]): Boolean

    Tests whether this mutable queue starts with the given sequence.

    Tests whether this mutable queue starts with the given sequence.

    that

    the sequence to test

    returns

    true if this collection has that as a prefix, false otherwise.

    Definition Classes
    GenSeqLike
  177. def stringPrefix: String

    Defines the prefix of this object's toString representation.

    Defines the prefix of this object's toString representation.

    returns

    a string representation which starts the result of toString applied to this mutable queue. By default the string prefix is the simple name of the collection class mutable queue.

    Definition Classes
    TraversableLikeGenTraversableLike
  178. def sum: A

    [use case] Sums up the elements of this collection.

    [use case]

    Sums up the elements of this collection.

    returns

    the sum of all elements in this mutable queue of numbers of type Int. Instead of Int, any other type T with an implicit Numeric[T] implementation can be used as element type of the mutable queue and as result type of sum. Examples of such types are: Long, Float, Double, BigInt.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def sum[B >: A](implicit num: Numeric[B]): B

  179. final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
    AnyRef
  180. def tail: Queue[A]

    Returns the rest of this list

    Returns the rest of this list

    returns

    a mutable queue consisting of all elements of this mutable queue except the first one.

    Definition Classes
    QueueMutableListLinearSeqOptimizedTraversableLikeGenTraversableLike
  181. def tails: Iterator[Queue[A]]

    Iterates over the tails of this mutable queue.

    Iterates over the tails of this mutable queue. The first value will be this mutable queue and the final one will be an empty mutable queue, with the intervening values the results of successive applications of tail.

    returns

    an iterator over all the tails of this mutable queue

    Definition Classes
    TraversableLike
    Example:
    1. List(1,2,3).tails = Iterator(List(1,2,3), List(2,3), List(3), Nil)

  182. def take(n: Int): Queue[A]

    Selects first n elements.

    Selects first n elements.

    n

    the number of elements to take from this mutable queue.

    returns

    a mutable queue consisting only of the first n elements of this mutable queue, or else the whole mutable queue, if it has less than n elements.

    Definition Classes
    LinearSeqOptimizedIterableLikeTraversableLikeGenTraversableLike
  183. def takeRight(n: Int): Queue[A]

    Selects last n elements.

    Selects last n elements.

    n

    the number of elements to take

    returns

    a mutable queue consisting only of the last n elements of this mutable queue, or else the whole mutable queue, if it has less than n elements.

    Definition Classes
    IterableLike
  184. def takeWhile(p: (A) ⇒ Boolean): Queue[A]

    Takes longest prefix of elements that satisfy a predicate.

    Takes longest prefix of elements that satisfy a predicate.

    returns

    the longest prefix of this mutable queue whose elements all satisfy the predicate p.

    Definition Classes
    LinearSeqOptimizedIterableLikeTraversableLikeGenTraversableLike
  185. def thisCollection: collection.LinearSeq[A]

    The underlying collection seen as an instance of mutable.Queue.

    The underlying collection seen as an instance of mutable.Queue. By default this is implemented as the current collection object itself, but this can be overridden.

    Attributes
    protected[this]
    Definition Classes
    LinearSeqLikeSeqLikeIterableLikeTraversableLike
  186. def to[Col[_]]: Col[A]

    [use case] Converts this mutable queue into another by copying all elements.

    [use case]

    Converts this mutable queue into another by copying all elements.

    Col

    The collection type to build.

    returns

    a new collection containing all elements of this mutable queue.

    Definition Classes
    TraversableLikeTraversableOnceGenTraversableOnce
    Full Signature

    def to[Col[_]](implicit cbf: CanBuildFrom[Nothing, A, Col[A]]): Col[A]

  187. def toArray: Array[A]

    [use case] Converts this mutable queue to an array.

    [use case]

    Converts this mutable queue to an array.

    returns

    an array containing all elements of this mutable queue. An ClassTag must be available for the element type of this mutable queue.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def toArray[B >: A](implicit arg0: ClassTag[B]): Array[B]

  188. def toBuffer[B >: A]: Buffer[B]

    Converts this mutable queue to a mutable buffer.

    Converts this mutable queue to a mutable buffer.

    returns

    a buffer containing all elements of this mutable queue.

    Definition Classes
    TraversableOnceGenTraversableOnce
  189. def toCollection(repr: Queue[A]): collection.LinearSeq[A]

    A conversion from collections of type Repr to mutable.Queue objects.

    A conversion from collections of type Repr to mutable.Queue objects. By default this is implemented as just a cast, but this can be overridden.

    Attributes
    protected[this]
    Definition Classes
    LinearSeqLikeSeqLikeIterableLikeTraversableLike
  190. def toIndexedSeq: immutable.IndexedSeq[A]

    Converts this mutable queue to an indexed sequence.

    Converts this mutable queue to an indexed sequence.

    returns

    an indexed sequence containing all elements of this mutable queue.

    Definition Classes
    TraversableOnceGenTraversableOnce
  191. def toIterable: collection.Iterable[A]

    Converts this mutable queue to an iterable collection.

    Converts this mutable queue to an iterable collection. Note that the choice of target Iterable is lazy in this default implementation as this TraversableOnce may be lazy and unevaluated (i.e. it may be an iterator which is only traversable once).

    returns

    an Iterable containing all elements of this mutable queue.

    Definition Classes
    IterableLikeTraversableOnceGenTraversableOnce
  192. def toIterator: Iterator[A]

    Returns an Iterator over the elements in this mutable queue.

    Returns an Iterator over the elements in this mutable queue. Will return the same Iterator if this instance is already an Iterator.

    returns

    an Iterator containing all elements of this mutable queue.

    Definition Classes
    IterableLikeTraversableLikeGenTraversableOnce
  193. def toList: immutable.List[A]

    Returns an instance of scala.List containing the same sequence of elements.

    Returns an instance of scala.List containing the same sequence of elements.

    returns

    a list containing all elements of this mutable queue.

    Definition Classes
    MutableListTraversableOnceGenTraversableOnce
  194. def toMap[T, U]: collection.Map[T, U]

    [use case] Converts this mutable queue to a map.

    [use case]

    Converts this mutable queue to a map. This method is unavailable unless the elements are members of Tuple2, each ((T, U)) becoming a key-value pair in the map. Duplicate keys will be overwritten by later keys: if this is an unordered collection, which key is in the resulting map is undefined.

    returns

    a map of type immutable.Map[T, U] containing all key/value pairs of type (T, U) of this mutable queue.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def toMap[T, U](implicit ev: <:<[A, (T, U)]): immutable.Map[T, U]

  195. def toParArray: ParArray[A]

    Implicit information
    This member is added by an implicit conversion from Queue[A] to TraversableOps[A] performed by method traversable2ops in scala.collection.parallel.
    Definition Classes
    TraversableOps
  196. def toQueue: Queue[A]

    Definition Classes
    MutableList
  197. def toSeq: collection.Seq[A]

    Converts this mutable queue to a sequence.

    Converts this mutable queue to a sequence.

    Overridden for efficiency.

    returns

    a sequence containing all elements of this mutable queue.

    Definition Classes
    SeqLikeGenSeqLikeTraversableOnceGenTraversableOnce
  198. def toSet[B >: A]: immutable.Set[B]

    Converts this mutable queue to a set.

    Converts this mutable queue to a set.

    returns

    a set containing all elements of this mutable queue.

    Definition Classes
    TraversableOnceGenTraversableOnce
  199. def toStream: immutable.Stream[A]

    Converts this mutable queue to a stream.

    Converts this mutable queue to a stream.

    returns

    a stream containing all elements of this mutable queue.

    Definition Classes
    IterableLikeTraversableLikeGenTraversableOnce
  200. def toString(): String

    Converts this mutable queue to a string.

    Converts this mutable queue to a string.

    returns

    a string representation of this collection. By default this string consists of the stringPrefix of this mutable queue, followed by all elements separated by commas and enclosed in parentheses.

    Definition Classes
    SeqLikeTraversableLikeAny
  201. def toTraversable: collection.Traversable[A]

    Converts this mutable queue to an unspecified Traversable.

    Converts this mutable queue to an unspecified Traversable. Will return the same collection if this instance is already Traversable.

    returns

    a Traversable containing all elements of this mutable queue.

    Definition Classes
    TraversableLikeTraversableOnceGenTraversableOnce
  202. def toVector: Vector[A]

    Converts this mutable queue to a Vector.

    Converts this mutable queue to a Vector.

    returns

    a vector containing all elements of this mutable queue.

    Definition Classes
    TraversableOnceGenTraversableOnce
  203. def transform(f: (A) ⇒ A): Queue.this.type

    Applies a transformation function to all values contained in this sequence.

    Applies a transformation function to all values contained in this sequence. The transformation function produces new values from existing elements.

    f

    the transformation to apply

    returns

    the sequence itself.

    Definition Classes
    SeqLike
  204. def transpose[B](implicit asTraversable: (A) ⇒ GenTraversableOnce[B]): Queue[Queue[B]]

    Transposes this mutable queue of traversable collections into a mutable queue of mutable queues.

    Transposes this mutable queue of traversable collections into a mutable queue of mutable queues.

    B

    the type of the elements of each traversable collection.

    asTraversable

    an implicit conversion which asserts that the element type of this mutable queue is a Traversable.

    returns

    a two-dimensional mutable queue of mutable queues which has as nth row the nth column of this mutable queue.

    Definition Classes
    GenericTraversableTemplate
    Annotations
    @migration
    Migration

    (Changed in version 2.9.0) transpose throws an IllegalArgumentException if collections are not uniformly sized.

    Exceptions thrown
    `IllegalArgumentException`

    if all collections in this mutable queue are not of the same size.

  205. def union(that: collection.Seq[A]): Queue[A]

    [use case] Produces a new sequence which contains all elements of this mutable queue and also all elements of a given sequence.

    [use case]

    Produces a new sequence which contains all elements of this mutable queue and also all elements of a given sequence. xs union ys is equivalent to xs ++ ys.

    Another way to express this is that xs union ys computes the order-presevring multi-set union of xs and ys. union is hence a counter-part of diff and intersect which also work on multi-sets.

    that

    the sequence to add.

    returns

    a new mutable queue which contains all elements of this mutable queue followed by all elements of that.

    Definition Classes
    SeqLikeGenSeqLike
    Full Signature

    def union[B >: A, That](that: GenSeq[B])(implicit bf: CanBuildFrom[Queue[A], B, That]): That

  206. def unzip[A1, A2](implicit asPair: (A) ⇒ (A1, A2)): (Queue[A1], Queue[A2])

    Converts this mutable queue of pairs into two collections of the first and second half of each pair.

    Converts this mutable queue of pairs into two collections of the first and second half of each pair.

    A1

    the type of the first half of the element pairs

    A2

    the type of the second half of the element pairs

    asPair

    an implicit conversion which asserts that the element type of this mutable queue is a pair.

    returns

    a pair mutable queues, containing the first, respectively second half of each element pair of this mutable queue.

    Definition Classes
    GenericTraversableTemplate
  207. def unzip3[A1, A2, A3](implicit asTriple: (A) ⇒ (A1, A2, A3)): (Queue[A1], Queue[A2], Queue[A3])

    Converts this mutable queue of triples into three collections of the first, second, and third element of each triple.

    Converts this mutable queue of triples into three collections of the first, second, and third element of each triple.

    A1

    the type of the first member of the element triples

    A2

    the type of the second member of the element triples

    A3

    the type of the third member of the element triples

    asTriple

    an implicit conversion which asserts that the element type of this mutable queue is a triple.

    returns

    a triple mutable queues, containing the first, second, respectively third member of each element triple of this mutable queue.

    Definition Classes
    GenericTraversableTemplate
  208. def update(n: Int, x: A): Unit

    Updates the n-th element of this list to a new value.

    Updates the n-th element of this list to a new value.

    Definition Classes
    MutableListSeqLike
    Exceptions thrown
    IndexOutOfBoundsException

    if index does not exist.

  209. def updated(index: Int, elem: A): Queue[A]

    [use case] A copy of this mutable queue with one single replaced element.

    [use case]

    A copy of this mutable queue with one single replaced element.

    index

    the position of the replacement

    elem

    the replacing element

    returns

    a copy of this mutable queue with the element at position index replaced by elem.

    Definition Classes
    SeqLikeGenSeqLike
    Full Signature

    def updated[B >: A, That](index: Int, elem: B)(implicit bf: CanBuildFrom[Queue[A], B, That]): That

  210. def view(from: Int, until: Int): SeqView[A, Queue[A]]

    Creates a non-strict view of a slice of this mutable queue.

    Creates a non-strict view of a slice of this mutable queue.

    Note: the difference between view and slice is that view produces a view of the current mutable queue, whereas slice produces a new mutable queue.

    Note: view(from, to) is equivalent to view.slice(from, to)

    from

    the index of the first element of the view

    until

    the index of the element following the view

    returns

    a non-strict view of a slice of this mutable queue, starting at index from and extending up to (but not including) index until.

    Definition Classes
    SeqLikeIterableLikeTraversableLike
  211. def view: SeqView[A, Queue[A]]

    Creates a non-strict view of this mutable queue.

    Creates a non-strict view of this mutable queue.

    returns

    a non-strict view of this mutable queue.

    Definition Classes
    SeqLikeIterableLikeTraversableLike
  212. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws()
  213. final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws()
  214. final def wait(arg0: Long): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws()
  215. def withFilter(p: (A) ⇒ Boolean): FilterMonadic[A, Queue[A]]

    Creates a non-strict filter of this mutable queue.

    Creates a non-strict filter of this mutable queue.

    Note: the difference between c filter p and c withFilter p is that the former creates a new collection, whereas the latter only restricts the domain of subsequent map, flatMap, foreach, and withFilter operations.

    p

    the predicate used to test elements.

    returns

    an object of class WithFilter, which supports map, flatMap, foreach, and withFilter operations. All these operations apply to those elements of this mutable queue which satisfy the predicate p.

    Definition Classes
    TraversableLikeFilterMonadic
  216. def zip[B](that: GenIterable[B]): Queue[(A, B)]

    [use case] Returns a mutable queue formed from this mutable queue and another iterable collection by combining corresponding elements in pairs.

    [use case]

    Returns a mutable queue formed from this mutable queue and another iterable collection by combining corresponding elements in pairs. If one of the two collections is longer than the other, its remaining elements are ignored.

    B

    the type of the second half of the returned pairs

    that

    The iterable providing the second half of each result pair

    returns

    a new mutable queue containing pairs consisting of corresponding elements of this mutable queue and that. The length of the returned collection is the minimum of the lengths of this mutable queue and that.

    Definition Classes
    IterableLikeGenIterableLike
    Full Signature

    def zip[A1 >: A, B, That](that: GenIterable[B])(implicit bf: CanBuildFrom[Queue[A], (A1, B), That]): That

  217. def zipAll[B](that: collection.Iterable[B], thisElem: A, thatElem: B): Queue[(A, B)]

    [use case] Returns a mutable queue formed from this mutable queue and another iterable collection by combining corresponding elements in pairs.

    [use case]

    Returns a mutable queue formed from this mutable queue and another iterable collection by combining corresponding elements in pairs. If one of the two collections is shorter than the other, placeholder elements are used to extend the shorter collection to the length of the longer.

    B

    the type of the second half of the returned pairs

    that

    The iterable providing the second half of each result pair

    thisElem

    the element to be used to fill up the result if this mutable queue is shorter than that.

    thatElem

    the element to be used to fill up the result if that is shorter than this mutable queue.

    returns

    a new mutable queue containing pairs consisting of corresponding elements of this mutable queue and that. The length of the returned collection is the maximum of the lengths of this mutable queue and that. If this mutable queue is shorter than that, thisElem values are used to pad the result. If that is shorter than this mutable queue, thatElem values are used to pad the result.

    Definition Classes
    IterableLikeGenIterableLike
    Full Signature

    def zipAll[B, A1 >: A, That](that: GenIterable[B], thisElem: A1, thatElem: B)(implicit bf: CanBuildFrom[Queue[A], (A1, B), That]): That

  218. def zipWithIndex: Queue[(A, Int)]

    [use case] Zips this mutable queue with its indices.

    [use case]

    Zips this mutable queue with its indices.

    returns

    A new mutable queue containing pairs consisting of all elements of this mutable queue paired with their index. Indices start at 0.

    Definition Classes
    IterableLikeGenIterableLike
    Full Signature

    def zipWithIndex[A1 >: A, That](implicit bf: CanBuildFrom[Queue[A], (A1, Int), That]): That

    Example:
    1. List("a", "b", "c").zipWithIndex = List(("a", 0), ("b", 1), ("c", 2))

  219. def [B](y: B): (Queue[A], B)

    Implicit information
    This member is added by an implicit conversion from Queue[A] to ArrowAssoc[Queue[A]] performed by method any2ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc

Shadowed Implict Value Members

  1. def filter(p: (A) ⇒ Boolean): TraversableOnce[A]

    Implicit information
    This member is added by an implicit conversion from Queue[A] to MonadOps[A] performed by method MonadOps in scala.collection.TraversableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (queue: MonadOps[A]).filter(p)
    Definition Classes
    MonadOps
  2. def flatMap[B](f: (A) ⇒ GenTraversableOnce[B]): TraversableOnce[B]

    Implicit information
    This member is added by an implicit conversion from Queue[A] to MonadOps[A] performed by method MonadOps in scala.collection.TraversableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (queue: MonadOps[A]).flatMap(f)
    Definition Classes
    MonadOps
  3. def map[B](f: (A) ⇒ B): TraversableOnce[B]

    Implicit information
    This member is added by an implicit conversion from Queue[A] to MonadOps[A] performed by method MonadOps in scala.collection.TraversableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (queue: MonadOps[A]).map(f)
    Definition Classes
    MonadOps
  4. val self: Any

    Implicit information
    This member is added by an implicit conversion from Queue[A] to StringAdd performed by method any2stringadd in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
    To access this member you can use a type ascription:
    (queue: StringAdd).self
    Definition Classes
    StringAdd
  5. val self: Any

    Implicit information
    This member is added by an implicit conversion from Queue[A] to StringFormat performed by method any2stringfmt in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
    To access this member you can use a type ascription:
    (queue: StringFormat).self
    Definition Classes
    StringFormat
  6. def withFilter(p: (A) ⇒ Boolean): Iterator[A]

    Implicit information
    This member is added by an implicit conversion from Queue[A] to MonadOps[A] performed by method MonadOps in scala.collection.TraversableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (queue: MonadOps[A]).withFilter(p)
    Definition Classes
    MonadOps

Deprecated Value Members

  1. def /:\[A1 >: A](z: A1)(op: (A1, A1) ⇒ A1): A1

    A syntactic sugar for out of order folding.

    A syntactic sugar for out of order folding. See fold.

    Example:

    scala> val a = LinkedList(1,2,3,4)
    a: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2, 3, 4)
    
    scala> val b = (a /:\ 5)(_+_)
    b: Int = 15
    Definition Classes
    GenTraversableOnce
    Annotations
    @deprecated
    Deprecated

    (Since version 2.10.0) use fold instead

  2. def x: Queue[A]

    Implicit information
    This member is added by an implicit conversion from Queue[A] to ArrowAssoc[Queue[A]] performed by method any2ArrowAssoc in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
    To access this member you can use a type ascription:
    (queue: ArrowAssoc[Queue[A]]).x
    Definition Classes
    ArrowAssoc
    Annotations
    @deprecated
    Deprecated

    (Since version 2.10.0) Use leftOfArrow instead

  3. def x: Queue[A]

    Implicit information
    This member is added by an implicit conversion from Queue[A] to Ensuring[Queue[A]] performed by method any2Ensuring in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
    To access this member you can use a type ascription:
    (queue: Ensuring[Queue[A]]).x
    Definition Classes
    Ensuring
    Annotations
    @deprecated
    Deprecated

    (Since version 2.10.0) Use resultOfEnsuring instead

Inherited from MutableList[A]

Inherited from Serializable

Inherited from java.io.Serializable

Inherited from Builder[A, MutableList[A]]

Inherited from Growable[A]

Inherited from Clearable

Inherited from LinearSeqOptimized[A, Queue[A]]

Inherited from LinearSeq[A]

Inherited from collection.LinearSeq[A]

Inherited from LinearSeqLike[A, Queue[A]]

Inherited from AbstractSeq[A]

Inherited from Seq[A]

Inherited from SeqLike[A, Seq[A]]

Inherited from Cloneable[Queue[A]]

Inherited from scala.Cloneable

Inherited from java.lang.Cloneable

Inherited from Iterable[A]

Inherited from Traversable[A]

Inherited from Mutable

Inherited from collection.AbstractSeq[A]

Inherited from collection.Seq[A]

Inherited from collection.SeqLike[A, Queue[A]]

Inherited from GenSeq[A]

Inherited from GenSeqLike[A, Queue[A]]

Inherited from PartialFunction[Int, A]

Inherited from (Int) ⇒ A

Inherited from collection.AbstractIterable[A]

Inherited from collection.Iterable[A]

Inherited from IterableLike[A, Queue[A]]

Inherited from Equals

Inherited from GenIterable[A]

Inherited from GenIterableLike[A, Queue[A]]

Inherited from AbstractTraversable[A]

Inherited from collection.Traversable[A]

Inherited from GenTraversable[A]

Inherited from GenericTraversableTemplate[A, Queue]

Inherited from TraversableLike[A, Queue[A]]

Inherited from GenTraversableLike[A, Queue[A]]

Inherited from Parallelizable[A, ParSeq[A]]

Inherited from TraversableOnce[A]

Inherited from GenTraversableOnce[A]

Inherited from FilterMonadic[A, Queue[A]]

Inherited from HasNewBuilder[A, Queue[A]]

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion traversable2ops from Queue[A] to TraversableOps[A]

Inherited by implicit conversion MonadOps from Queue[A] to MonadOps[A]

Inherited by implicit conversion any2stringadd from Queue[A] to StringAdd

Inherited by implicit conversion any2stringfmt from Queue[A] to StringFormat

Inherited by implicit conversion any2ArrowAssoc from Queue[A] to ArrowAssoc[Queue[A]]

Inherited by implicit conversion any2Ensuring from Queue[A] to Ensuring[Queue[A]]

Inherited by implicit conversion alternateImplicit from Queue[A] to ForceImplicitAmbiguity

Ungrouped