The type implementing this traversable
The type implementing this traversable
A class supporting filtered operations.
Tests if some element is contained in this set.
Tests if some element is contained in this set.
the element to test for membership.
true if elem is contained in this set, false otherwise.
Computes the intersection between this set and another set.
Computes the intersection between this set and another set.
Note: Same as intersect.
the set to intersect with.
a new set consisting of all elements that are both in this
set and in the given set that.
The difference of this set and another set.
The difference of this set and another set.
Note: Same as diff.
the set of elements to exclude.
a set containing those elements of this
set that are not also contained in the given set that.
Creates a new set consisting of all the elements of this set and two or more specified elements.
Creates a new set consisting of all the elements of this set and two or more specified elements.
Note that duplicates (elements for which equals yields true) will be
removed, but it is not specified whether it will be an element of this
set or a newly added element.
the first element to add.
the second element to add.
the remaining elements to add.
a new set consisting of all the elements of this set, elem1,
elem2 and those in elems.
Creates a new set consisting of all the elements of this set and elem.
Creates a new set consisting of all the elements of this set and elem.
Note that duplicates (elements for which equals yields true) will be
removed, but it is not specified whether it will be an element of this
set or a newly added element.
the element to add.
a new set consisting of elements of this set and elem.
(Changed in version 2.8.0) + creates a new set. Use += to add an element to this set and return that set itself.
Creates a new set consisting of all the elements of this set and those provided by the specified traversable object.
Creates a new set consisting of all the elements of this set and those provided by the specified traversable object.
Note that duplicates (elements for which equals yields true) will be
removed, but it is not specified whether it will be an element of this
set or a newly added element.
the traversable object.
a new set consisting of elements of this set and those in xs.
[use case] Returns a new mutable set containing the elements from the left hand operand followed by the elements from the right hand operand.
Returns a new mutable set containing the elements from the left hand operand followed by the elements from the right hand operand. The element type of the mutable set 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)
the element type of the returned collection.
the traversable to append.
a new mutable set which contains all elements of this mutable set
followed by all elements of 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.
the element type of the returned collection.
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.
the traversable to append.
an implicit value of class CanBuildFrom which determines
the result class That from the current representation type Repr and
and the new element type B.
a new collection of type That which contains all elements
of this mutable set followed by all elements of that.
[use case] 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)
the element type of the returned collection.
the traversable to append.
a new mutable set which contains all elements of this mutable set
followed by all elements of that.
adds all elements produced by a TraversableOnce to this mutable set.
adds all elements produced by a TraversableOnce to this mutable set.
the TraversableOnce producing the elements to add.
the mutable set itself.
Adds a single element to the set.
Adds a single element to the set.
the element to be added.
the builder itself.
adds two or more elements to this mutable set.
adds two or more elements to this mutable set.
the first element to add.
the second element to add.
the remaining elements to add.
the mutable set itself
Creates a new set consisting of all the elements of this set except the two or more specified elements.
Creates a new set consisting of all the elements of this set except the two or more specified elements.
the first element to remove.
the second element to remove.
the remaining elements to remove.
a new set consisting of all the elements of this set except
elem1, elem2 and elems.
(Changed in version 2.8.0) - creates a new set. Use -= to remove an element from this set and return that set itself.
Creates a new set consisting of all the elements of this set except elem.
Creates a new set consisting of all the elements of this set except elem.
the element to remove.
a new set consisting of all the elements of this set except elem.
(Changed in version 2.8.0) - creates a new set. Use -= to remove an element from this set and return that set itself.
Creates a new set consisting of all the elements of this set except those provided by the specified traversable object.
Creates a new set consisting of all the elements of this set except those provided by the specified traversable object.
the traversable object.
a new set consisting of all the elements of this set except
elements from xs.
(Changed in version 2.8.0) -- creates a new set. Use --= to remove elements from this set and return that set itself.
Removes all elements produced by an iterator from this mutable set.
Removes all elements produced by an iterator from this mutable set.
the iterator producing the elements to remove.
the mutable set itself
Removes a single element from this mutable set.
Removes a single element from this mutable set.
the element to remove.
the mutable set itself
Removes two or more elements from this mutable set.
Removes two or more elements from this mutable set.
the first element to remove.
the second element to remove.
the remaining elements to remove.
the mutable set itself
Applies a binary operator to a start value and all elements of this mutable set, going left to right.
Applies a binary operator to a start value and all elements of this mutable set, 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
Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.
the result type of the binary operator.
the start value.
the binary operator.
the result of inserting op between consecutive elements of this mutable set,
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 set.
Applies a binary operator to all elements of this mutable set and a start value, going right to left.
Applies a binary operator to all elements of this mutable set and a start value, going right to left.
Note: :\ is alternate syntax for foldRight; xs :\ z is the same as
xs foldRight z.
Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.
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
the result type of the binary operator.
the start value
the binary operator
the result of inserting op between consecutive elements of this mutable set,
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 set.
Send a message to this scriptable object.
Send a message to this scriptable object.
the message to send.
if the message was not understood.
Adds an element to this mutable set.
Adds an element to this mutable set.
the element to be added
true if the element was not yet present in the set, false otherwise.
Appends all elements of this mutable set to a string builder.
Appends all elements of this mutable set to a string builder.
The written text consists of the string representations (w.r.t. the method
toString) of all elements of this mutable set 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
the string builder to which elements are appended.
the string builder b to which elements were appended.
Appends all elements of this mutable set to a string builder using a separator string.
Appends all elements of this mutable set 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 set, 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
the string builder to which elements are appended.
the separator string.
the string builder b to which elements were appended.
Appends all elements of this mutable set to a string builder using start, end, and separator strings.
Appends all elements of this mutable set 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 set 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)
the string builder to which elements are appended.
the starting string.
the separator string.
the ending string.
the string builder b to which elements were appended.
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).
the type of accumulated results
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) and may be evaluated
more than once
an operator used to accumulate results within a partition
an associative operator used to combine results from different partitions
Composes two instances of Function1 in a new Function1, with this function applied first.
Composes two instances of Function1 in a new Function1, with this function applied first.
the result type of function g
a function R => A
a new function f such that f(x) == g(apply(x))
Tests if some element is contained in this set.
Tests if some element is contained in this set.
This method is equivalent to contains. It allows sets to be interpreted as predicates.
the element to test for membership.
true if elem is contained in this set, false otherwise.
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.
The object with which this mutable set should be compared
true, if this mutable set can possibly equal that, false otherwise. The test
takes into consideration only the run-time types of objects but ignores their elements.
Removes all elements from the set.
Removes all elements from the set. After this operation is completed, the set will be empty.
[use case] Builds a new collection by applying a partial function to all elements of this mutable set on which the function is defined.
Builds a new collection by applying a partial function to all elements of this mutable set on which the function is defined.
the element type of the returned collection.
the partial function which filters and maps the mutable set.
a new mutable set 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.
Finds the first element of the mutable set for which the given partial function is defined, and applies the partial function to it.
Finds the first element of the mutable set for which the given partial function is defined, and applies the partial function to it.
Note: might return different results for different runs, unless the underlying collection type is ordered.
the partial function
an option value containing pf applied to the first
value for which it is defined, or None if none exists.
Seq("a", 1, 5L).collectFirst({ case x: Int => x*10 }) = Some(10)
The factory companion object that builds instances of class mutable.Set.
The factory companion object that builds instances of class mutable.Set.
(or its Iterable superclass where class mutable.Set is not a Seq.)
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.
the type to which function g can be applied
a function A => T1
a new function f such that f(x) == apply(g(x))
[use case] Copies elements of this mutable set to an array.
Copies elements of this mutable set to an array.
Fills the given array xs with at most len elements of
this mutable set, starting at position start.
Copying will stop once either the end of the current mutable set is reached,
or the end of the array is reached, or len elements have been copied.
the array to fill.
the starting index.
the maximal number of elements to copy.
[use case] Copies values of this mutable set to an array.
Copies values of this mutable set to an array.
Fills the given array xs with values of this mutable set.
Copying will stop once either the end of the current mutable set is reached,
or the end of the array is reached.
the array to fill.
[use case] Copies values of this mutable set to an array.
Copies values of this mutable set to an array.
Fills the given array xs with values of this mutable set, beginning at index start.
Copying will stop once either the end of the current mutable set is reached,
or the end of the array is reached.
the array to fill.
the starting index.
Copies all elements of this mutable set to a buffer.
Copies all elements of this mutable set to a buffer.
The buffer to which elements are copied.
Counts the number of elements in the mutable set which satisfy a predicate.
Counts the number of elements in the mutable set which satisfy a predicate.
the predicate used to test elements.
the number of elements satisfying the predicate p.
Computes the difference of this set and another set.
Computes the difference of this set and another set.
the set of elements to exclude.
a set containing those elements of this
set that are not also contained in the given set that.
Selects all elements except first n ones.
Selects all elements except first n ones.
Note: might return different results for different runs, unless the underlying collection type is ordered.
the number of elements to drop from this mutable set.
a mutable set consisting of all elements of this mutable set except the first n ones, or else the
empty mutable set, if this mutable set has less than n elements.
Selects all elements except last n ones.
Selects all elements except last n ones.
Note: might return different results for different runs, unless the underlying collection type is ordered.
The number of elements to take
a mutable set consisting of all elements of this mutable set except the last n ones, or else the
empty mutable set, if this mutable set has less than n elements.
Drops longest prefix of elements that satisfy a predicate.
Drops longest prefix of elements that satisfy a predicate.
Note: might return different results for different runs, unless the underlying collection type is ordered.
the longest suffix of this mutable set whose first element
does not satisfy the predicate p.
Checks if two publishers are structurally identical.
Checks if two publishers are structurally identical.
true, iff both publishers contain the same sequence of elements.
Tests whether a predicate holds for some of the elements of this mutable set.
Tests whether a predicate holds for some of the elements of this mutable set.
the predicate used to test elements.
true if the given predicate p holds for some of the
elements of this mutable set, otherwise false.
Selects all elements of this mutable set which satisfy a predicate.
Selects all elements of this mutable set which satisfy a predicate.
the predicate used to test elements.
a new mutable set consisting of all elements of this mutable set that satisfy the given
predicate p. The order of the elements is preserved.
Selects all elements of this mutable set which do not satisfy a predicate.
Selects all elements of this mutable set which do not satisfy a predicate.
the predicate used to test elements.
a new mutable set consisting of all elements of this mutable set that do not satisfy the given
predicate p. The order of the elements is preserved.
Finds the first element of the mutable set satisfying a predicate, if any.
Finds the first element of the mutable set satisfying a predicate, if any.
Note: might return different results for different runs, unless the underlying collection type is ordered.
the predicate used to test elements.
an option value containing the first element in the mutable set
that satisfies p, or None if none exists.
[use case] Builds a new collection by applying a function to all elements of this mutable set and using the elements of the resulting collections.
Builds a new collection by applying a function to all elements of this mutable set 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 set. 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 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)
the element type of the returned collection.
the function to apply to each element.
a new mutable set resulting from applying the given collection-valued function
f to each element of this mutable set and concatenating the results.
[use case] Converts this mutable set of traversable collections into a mutable set formed by the elements of these traversable collections.
Converts this mutable set of traversable collections into a mutable set formed by the elements of these traversable collections.
The resulting collection's type will be guided by the static type of mutable set. 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)
the type of the elements of each traversable collection.
a new mutable set resulting from concatenating all element mutable sets.
Folds the elements of this mutable set using the specified associative binary operator.
Folds the elements of this mutable set using the specified associative binary operator.
The order in which operations are performed on elements is unspecified and may be nondeterministic.
a type parameter for the binary operator, a supertype of A.
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.)
a binary operator that must be associative
the result of applying fold operator op between all the elements and z
Applies a binary operator to a start value and all elements of this mutable set, going left to right.
Applies a binary operator to a start value and all elements of this mutable set, going left to right.
Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.
the result type of the binary operator.
the start value.
the binary operator.
the result of inserting op between consecutive elements of this mutable set,
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 set.
Applies a binary operator to all elements of this mutable set and a start value, going right to left.
Applies a binary operator to all elements of this mutable set and a start value, going right to left.
Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.
the result type of the binary operator.
the start value.
the binary operator.
the result of inserting op between consecutive elements of this mutable set,
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 set.
Tests whether a predicate holds for all elements of this mutable set.
Tests whether a predicate holds for all elements of this mutable set.
the predicate used to test elements.
true if the given predicate p holds for all elements
of this mutable set, otherwise false.
[use case] Applies a function f to all elements of this mutable set.
Applies a function f to all elements of this mutable set.
Note: this method underlies the implementation of most other bulk operations. Subclasses should re-implement this method if a more efficient implementation exists.
the function that is applied for its side-effect to every element.
The result of function f is discarded.
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).
The generic builder that builds instances of mutable.Set
at arbitrary element types.
The generic builder that builds instances of mutable.Set
at arbitrary element types.
Partitions this mutable set into a map of mutable sets according to some discriminator function.
Partitions this mutable set into a map of mutable sets 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 set.
the type of keys returned by the discriminator function.
the discriminator function.
A map from keys to mutable sets 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 set of those elements x
for which f(x) equals k.
Partitions elements in fixed size mutable sets.
Partitions elements in fixed size mutable sets.
the number of elements per group
An iterator producing mutable sets of size size, except the
last will be truncated if the elements don't divide evenly.
scala.collection.Iterator, method grouped
Tests whether this mutable set is known to have a finite size.
Tests whether this mutable set 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.
true if this collection is known to have finite size,
false otherwise.
Selects the first element of this mutable set.
Selects the first element of this mutable set.
Note: might return different results for different runs, unless the underlying collection type is ordered.
the first element of this mutable set.
if the mutable set is empty.
Optionally selects the first element.
Optionally selects the first element.
Note: might return different results for different runs, unless the underlying collection type is ordered.
the first element of this mutable set if it is nonempty,
None if it is empty.
Selects all elements except the last.
Selects all elements except the last.
Note: might return different results for different runs, unless the underlying collection type is ordered.
a mutable set consisting of all elements of this mutable set except the last one.
if the mutable set is empty.
Iterates over the inits of this mutable set.
Iterates over the inits of this mutable set. The first value will be this
mutable set and the final one will be an empty mutable set, with the intervening
values the results of successive applications of init.
an iterator over all the inits of this mutable set
List(1,2,3).inits = Iterator(List(1,2,3), List(1,2), List(1), Nil)
Computes the intersection between this set and another set.
Computes the intersection between this set and another set.
the set to intersect with.
a new set consisting of all elements that are both in this
set and in the given set that.
Tests if this set is empty.
Tests if this set is empty.
true if there is no element in the set, false otherwise.
Tests whether this mutable set can be repeatedly traversed.
Tests whether this mutable set can be repeatedly traversed.
true
Selects the last element.
Selects the last element.
Note: might return different results for different runs, unless the underlying collection type is ordered.
The last element of this mutable set.
If the mutable set is empty.
Optionally selects the last element.
Optionally selects the last element.
Note: might return different results for different runs, unless the underlying collection type is ordered.
the last element of this mutable set$ if it is nonempty,
None if it is empty.
[use case] Builds a new collection by applying a function to all elements of this mutable set.
Builds a new collection by applying a function to all elements of this mutable set.
the element type of the returned collection.
the function to apply to each element.
a new mutable set resulting from applying the given function
f to each element of this mutable set and collecting the results.
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.
the type of collection returned by f.
the transformation function.
a new builder which is the same as the current builder except that a transformation function is applied to this builder's result.
[use case] Finds the largest element.
Finds the largest element.
the largest element of this mutable set.
[use case] Finds the smallest element.
Finds the smallest element.
the smallest element of this mutable set
Displays all elements of this mutable set in a string.
Displays all elements of this mutable set in a string.
a string representation of this mutable set. In the resulting string
the string representations (w.r.t. the method toString)
of all elements of this mutable set follow each other without any
separator string.
Displays all elements of this mutable set in a string using a separator string.
Displays all elements of this mutable set in a string using a separator string.
the separator string.
a string representation of this mutable set. In the resulting string
the string representations (w.r.t. the method toString)
of all elements of this mutable set are separated by the string sep.
List(1, 2, 3).mkString("|") = "1|2|3"
Displays all elements of this mutable set in a string using start, end, and separator strings.
Displays all elements of this mutable set in a string using start, end, and separator strings.
the starting string.
the separator string.
the ending string.
a string representation of this mutable set. 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 set are separated by
the string sep.
List(1, 2, 3).mkString("(", "; ", ")") = "(1; 2; 3)"
A common implementation of newBuilder for all mutable sets
in terms of empty.
A common implementation of newBuilder for all mutable sets
in terms of empty. Overrides the implementation in collection.SetLike
for better efficiency.
Tests whether the mutable set is not empty.
Tests whether the mutable set is not empty.
true if the mutable set contains at least one element, false otherwise.
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.
a parallel implementation of this collection
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.
a combiner for the parallel collection of type ParRepr
Partitions this mutable set in two mutable sets according to a predicate.
Partitions this mutable set in two mutable sets according to a predicate.
the predicate on which to partition.
a pair of mutable sets: the first mutable set consists of all elements that
satisfy the predicate p and the second mutable set consists of all elements
that don't. The relative order of the elements in the resulting mutable sets
is the same as in the original mutable set.
[use case] Multiplies up the elements of this collection.
Multiplies up the elements of this collection.
the product of all elements in this mutable set 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 set and as result type of product.
Examples of such types are: Long, Float, Double, BigInt.
Reduces the elements of this mutable set using the specified associative binary operator.
Reduces the elements of this mutable set using the specified associative binary operator.
The order in which operations are performed on elements is unspecified and may be nondeterministic.
A type parameter for the binary operator, a supertype of A.
A binary operator that must be associative.
The result of applying reduce operator op between all the elements if the mutable set is nonempty.
if this mutable set is empty.
Applies a binary operator to all elements of this mutable set, going left to right.
Applies a binary operator to all elements of this mutable set, going left to right.
Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.
the result type of the binary operator.
the binary operator.
the result of inserting op between consecutive elements of this mutable set,
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 set.
if this mutable set is empty.
Optionally applies a binary operator to all elements of this mutable set, going left to right.
Optionally applies a binary operator to all elements of this mutable set, going left to right.
Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.
the result type of the binary operator.
the binary operator.
an option value containing the result of reduceLeft(op) is this mutable set is nonempty,
None otherwise.
Reduces the elements of this mutable set, if any, using the specified associative binary operator.
Reduces the elements of this mutable set, if any, using the specified associative binary operator.
The order in which operations are performed on elements is unspecified and may be nondeterministic.
A type parameter for the binary operator, a supertype of A.
A binary operator that must be associative.
An option value containing result of applying reduce operator op between all
the elements if the collection is nonempty, and None otherwise.
Applies a binary operator to all elements of this mutable set, going right to left.
Applies a binary operator to all elements of this mutable set, going right to left.
Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.
the result type of the binary operator.
the binary operator.
the result of inserting op between consecutive elements of this mutable set,
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 set.
if this mutable set is empty.
Optionally applies a binary operator to all elements of this mutable set, going right to left.
Optionally applies a binary operator to all elements of this mutable set, going right to left.
Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.
the result type of the binary operator.
the binary operator.
an option value containing the result of reduceRight(op) is this mutable set is nonempty,
None otherwise.
Removes an element from this set.
Removes an element from this set.
The element to be removed.
true if the element was previously present in the set, false otherwise.
The collection of type mutable set underlying this TraversableLike object.
The collection of type mutable set underlying this TraversableLike object.
By default this is implemented as the TraversableLike object itself,
but this can be overridden.
The result when this set is used as a builder
Removes all elements from the set for which do not satisfy a predicate.
Removes all elements from the set for which do not satisfy a predicate.
the predicate used to test elements. Only elements for
which p returns true are retained in the set; all others
are removed.
[use case] Checks if the other iterable collection contains the same elements in the same order as this mutable set.
Checks if the other iterable collection contains the same elements in the same order as this mutable set.
Note: might return different results for different runs, unless the underlying collection type is ordered.
the collection to compare with.
true, if both collections contain the same elements in the same order, false otherwise.
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.
element type of the resulting collection
type of the resulting collection
neutral element for the operator op
the associative operator for the scan
combiner factory which provides a combiner
a new mutable set containing the prefix scan of the elements in this mutable set
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.
Note: might return different results for different runs, unless the underlying collection type is ordered.
the type of the elements in the resulting collection
the actual type of the resulting collection
the initial value
the binary operator applied to the intermediate result and the element
an implicit value of class CanBuildFrom which determines
the result class That from the current representation type Repr and
and the new element type B.
collection with intermediate results
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.
Note: might return different results for different runs, unless the underlying collection type is ordered.
Example:
List(1, 2, 3, 4).scanRight(0)(_ + _) == List(10, 9, 7, 4, 0)
the type of the elements in the resulting collection
the actual type of the resulting collection
the initial value
the binary operator applied to the intermediate result and the element
an implicit value of class CanBuildFrom which determines
the result class That from the current representation type Repr and
and the new element type B.
collection with intermediate results
(Changed in version 2.9.0) The behavior of scanRight has changed. The previous behavior can be reproduced with scanRight.reverse.
The publisher itself of type Pub.
The publisher itself of type Pub. Implemented by a cast from this here.
Needs to be overridden if the actual publisher is different from this.
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.
a sequential view of the collection.
The size of this mutable set.
The size of this mutable set.
the number of elements in this mutable set.
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.
the collection which serves as a hint for the result's size.
a correction to add to the coll.size to produce the size hint.
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.
the collection which serves as a hint for the result's size.
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.
the hint how many elements will be added.
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.
the hint how many elements will be added.
the bounding collection. If it is an IndexedSeqLike, then sizes larger than collection's size are reduced.
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
Note: might return different results for different runs, unless the underlying collection type is ordered.
a mutable set containing the elements greater than or equal to
index from extending up to (but not including) index until
of this mutable set.
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.)
the number of elements per group
the distance between the first elements of successive groups (defaults to 1)
An iterator producing mutable sets of size size, except the
last and the only element will be truncated if there are
fewer elements than size.
scala.collection.Iterator, method sliding
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.)
the number of elements per group
An iterator producing mutable sets of size size, except the
last and the only element will be truncated if there are
fewer elements than size.
scala.collection.Iterator, method sliding
Splits this mutable set into a prefix/suffix pair according to a predicate.
Splits this mutable set 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.
Note: might return different results for different runs, unless the underlying collection type is ordered.
a pair consisting of the longest prefix of this mutable set whose
elements all satisfy p, and the rest of this mutable set.
Splits this mutable set into two at a given position.
Splits this mutable set into two at a given position.
Note: c splitAt n is equivalent to (but possibly more efficient than)
(c take n, c drop n).
Note: might return different results for different runs, unless the underlying collection type is ordered.
the position at which to split.
a pair of mutable sets consisting of the first n
elements of this mutable set, and the other elements.
Defines the prefix of this object's toString representation.
Defines the prefix of this object's toString representation.
a string representation which starts the result of toString applied to this set.
Unless overridden this is simply "Set".
Tests whether this set is a subset of another set.
Tests whether this set is a subset of another set.
the set to test.
true if this set is a subset of that, i.e. if
every element of this set is also an element of that.
An iterator over all subsets of this set.
An iterator over all subsets of this set of the given size.
An iterator over all subsets of this set of the given size. If the requested size is impossible, an empty iterator is returned.
the size of the subsets.
the iterator.
[use case] Sums up the elements of this collection.
Sums up the elements of this collection.
the sum of all elements in this mutable set 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 set and as result type of sum.
Examples of such types are: Long, Float, Double, BigInt.
Selects all elements except the first.
Selects all elements except the first.
Note: might return different results for different runs, unless the underlying collection type is ordered.
a mutable set consisting of all elements of this mutable set except the first one.
if the mutable set is empty.
Iterates over the tails of this mutable set.
Iterates over the tails of this mutable set. The first value will be this
mutable set and the final one will be an empty mutable set, with the intervening
values the results of successive applications of tail.
an iterator over all the tails of this mutable set
List(1,2,3).tails = Iterator(List(1,2,3), List(2,3), List(3), Nil)
Selects first n elements.
Selects first n elements.
Note: might return different results for different runs, unless the underlying collection type is ordered.
the number of elements to take from this mutable set.
a mutable set consisting only of the first n elements of this mutable set,
or else the whole mutable set, if it has less than n elements.
Selects last n elements.
Selects last n elements.
Note: might return different results for different runs, unless the underlying collection type is ordered.
the number of elements to take
a mutable set consisting only of the last n elements of this mutable set, or else the
whole mutable set, if it has less than n elements.
Takes longest prefix of elements that satisfy a predicate.
Takes longest prefix of elements that satisfy a predicate.
Note: might return different results for different runs, unless the underlying collection type is ordered.
the longest prefix of this mutable set whose elements all satisfy
the predicate p.
The underlying collection seen as an instance of mutable.Set
The underlying collection seen as an instance of mutable.Set
[use case] Converts this mutable set into another by copying all elements.
Converts this mutable set into another by copying all elements.
The collection type to build.
a new collection containing all elements of this mutable set.
[use case] Converts this mutable set to an array.
Converts this mutable set to an array.
an array containing all elements of this mutable set.
An ClassTag must be available for the element type of this mutable set.
Converts this mutable set to a mutable buffer.
Converts this mutable set to a mutable buffer.
a buffer containing all elements of this mutable set.
A conversion from collections of type Repr to mutable.Set
A conversion from collections of type Repr to mutable.Set
Converts this mutable set to an indexed sequence.
Converts this mutable set to an indexed sequence.
an indexed sequence containing all elements of this mutable set.
Converts this mutable set to an iterable collection.
Converts this mutable set 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).
an Iterable containing all elements of this mutable set.
Returns an Iterator over the elements in this mutable set.
Returns an Iterator over the elements in this mutable set. Will return the same Iterator if this instance is already an Iterator.
an Iterator containing all elements of this mutable set.
Converts this mutable set to a list.
Converts this mutable set to a list.
a list containing all elements of this mutable set.
[use case] Converts this mutable set to a map.
Converts this mutable set 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.
a map of type immutable.Map[T, U]
containing all key/value pairs of type (T, U) of this mutable set.
Converts this mutable set to a sequence.
Converts this mutable set to a sequence. As with toIterable, it's lazy
in this default implementation, as this TraversableOnce may be
lazy and unevaluated.
a sequence containing all elements of this mutable set.
Converts this mutable set to a set.
Converts this mutable set to a set.
a set containing all elements of this mutable set.
Converts this mutable set to a stream.
Converts this mutable set to a stream.
a stream containing all elements of this mutable set.
Converts this mutable set to a string.
Converts this mutable set to a string.
a string representation of this collection. By default this
string consists of the stringPrefix of this mutable set, followed
by all elements separated by commas and enclosed in parentheses.
Converts this mutable set to an unspecified Traversable.
Converts this mutable set to an unspecified Traversable. Will return the same collection if this instance is already Traversable.
a Traversable containing all elements of this mutable set.
Converts this mutable set to a Vector.
Converts this mutable set to a Vector.
a vector containing all elements of this mutable set.
Transposes this mutable set of traversable collections into a mutable set of mutable sets.
Transposes this mutable set of traversable collections into a mutable set of mutable sets.
the type of the elements of each traversable collection.
an implicit conversion which asserts that the
element type of this mutable set is a Traversable.
a two-dimensional mutable set of mutable sets which has as nth row the nth column of this mutable set.
(Changed in version 2.9.0) transpose throws an IllegalArgumentException if collections are not uniformly sized.
if all collections in this mutable set are not of the same size.
Computes the union between of set and another set.
Computes the union between of set and another set.
the set to form the union with.
a new set consisting of all elements that are in this
set or in the given set that.
Converts this mutable set of pairs into two collections of the first and second half of each pair.
Converts this mutable set of pairs into two collections of the first and second half of each pair.
the type of the first half of the element pairs
the type of the second half of the element pairs
an implicit conversion which asserts that the element type of this mutable set is a pair.
a pair mutable sets, containing the first, respectively second half of each element pair of this mutable set.
Converts this mutable set of triples into three collections of the first, second, and third element of each triple.
Converts this mutable set of triples into three collections of the first, second, and third element of each triple.
the type of the first member of the element triples
the type of the second member of the element triples
the type of the third member of the element triples
an implicit conversion which asserts that the element type of this mutable set is a triple.
a triple mutable sets, containing the first, second, respectively third member of each element triple of this mutable set.
Updates the presence of a single element in this set.
Updates the presence of a single element in this set.
This method allows one to add or remove an element elem
from this set depending on the value of parameter included.
Typically, one would use the following syntax:
set(elem) = true // adds element set(elem) = false // removes element
the element to be added or removed
a flag indicating whether element should be included or excluded.
Creates a non-strict view of a slice of this mutable set.
Creates a non-strict view of a slice of this mutable set.
Note: the difference between view and slice is that view produces
a view of the current mutable set, whereas slice produces a new mutable set.
Note: view(from, to) is equivalent to view.slice(from, to)
Note: might return different results for different runs, unless the underlying collection type is ordered.
the index of the first element of the view
the index of the element following the view
a non-strict view of a slice of this mutable set, starting at index from
and extending up to (but not including) index until.
Creates a non-strict view of this mutable set.
Creates a non-strict view of this mutable set.
a non-strict view of this mutable set.
Creates a non-strict filter of this mutable set.
Creates a non-strict filter of this mutable set.
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.
Note: might return different results for different runs, unless the underlying collection type is ordered.
the predicate used to test elements.
an object of class WithFilter, which supports
map, flatMap, foreach, and withFilter operations.
All these operations apply to those elements of this mutable set
which satisfy the predicate p.
[use case] Returns a mutable set formed from this mutable set and another iterable collection by combining corresponding elements in pairs.
Returns a mutable set formed from this mutable set 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.
Note: might return different results for different runs, unless the underlying collection type is ordered.
the type of the second half of the returned pairs
The iterable providing the second half of each result pair
a new mutable set containing pairs consisting of
corresponding elements of this mutable set and that. The length
of the returned collection is the minimum of the lengths of this mutable set and that.
[use case] Returns a mutable set formed from this mutable set and another iterable collection by combining corresponding elements in pairs.
Returns a mutable set formed from this mutable set 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.
Note: might return different results for different runs, unless the underlying collection type is ordered.
the type of the second half of the returned pairs
The iterable providing the second half of each result pair
the element to be used to fill up the result if this mutable set is shorter than that.
the element to be used to fill up the result if that is shorter than this mutable set.
a new mutable set containing pairs consisting of
corresponding elements of this mutable set and that. The length
of the returned collection is the maximum of the lengths of this mutable set and that.
If this mutable set is shorter than that, thisElem values are used to pad the result.
If that is shorter than this mutable set, thatElem values are used to pad the result.
[use case] Zips this mutable set with its indices.
Zips this mutable set with its indices.
Note: might return different results for different runs, unless the underlying collection type is ordered.
A new mutable set containing pairs consisting of all elements of this
mutable set paired with their index. Indices start at 0.
List("a", "b", "c").zipWithIndex = List(("a", 0), ("b", 1), ("c", 2))
Computes the union between this set and another set.
Computes the union between this set and another set.
Note: Same as union.
the set to form the union with.
a new set consisting of all elements that are in this
set or in the given set that.
(observableSet: StringAdd[ObservableSet[A]]).+(other)
(observableSet: MonadOps[A]).filter(p)
(observableSet: MonadOps[A]).flatMap(f)
(observableSet: MonadOps[A]).map(f)
(observableSet: MonadOps[A]).withFilter(p)
This class is typically used as a mixin. It adds a subscription mechanism to the
Setclass into which this abstract class is mixed in. ClassObservableSetpublishes events of the typeMessage.1.0, 08/07/2003
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