scala.collection.interfaces

TraversableMethods

trait TraversableMethods [+A, +This <: TraversableLike[A, This]] extends TraversableOnceMethods[A]

linear super types: TraversableOnceMethods[A], AnyRef, Any
known subclasses: IterableMethods, SeqMethods, SetMethods, MapMethods
self type: TraversableMethods[A, This] with Traversable[A]
source: TraversableMethods.scala
    since
  1. 2.8

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  1. TraversableMethods
  2. TraversableOnceMethods
  3. AnyRef
  4. Any
Visibility
  1. Public
  2. All
Impl.
  1. Concrete
  2. Abstract

Value Members

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

    attributes: final
    definition classes: AnyRef
  2. def != ( arg0 : Any ) : Boolean

    o != arg0 is the same as !(o == (arg0)).

    o != arg0 is the same as !(o == (arg0)).

    arg0

    the object to compare against this object for dis-equality.

    returns

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

    attributes: final
    definition classes: Any
  3. def ## () : Int

    attributes: final
    definition classes: AnyRef → Any
  4. def $asInstanceOf [T0] () : T0

    attributes: final
    definition classes: AnyRef
  5. def $isInstanceOf [T0] () : Boolean

    attributes: final
    definition classes: AnyRef
  6. def ++ [B >: A, That] ( that : TraversableOnce[B] )(implicit bf : CanBuildFrom[This, B, That] ) : That

    attributes: abstract
    definition classes: TraversableMethodsTraversableMethods
  7. def ++: [B >: A, That] ( that : TraversableOnce[B] )(implicit bf : CanBuildFrom[This, B, That] ) : That

    attributes: abstract
    definition classes: TraversableMethodsTraversableMethods
  8. def /: [B] ( z : B )( op : (B, A) ⇒ B ) : B

    attributes: abstract
  9. def :\ [B] ( z : B )( op : (A, B) ⇒ B ) : B

    attributes: abstract
  10. def == ( arg0 : AnyRef ) : Boolean

    o == arg0 is the same as if (o eq null) arg0 eq null else o.equals(arg0).

    o == arg0 is the same as if (o eq null) arg0 eq null else o.equals(arg0).

    arg0

    the object to compare against this object for equality.

    returns

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

    attributes: final
    definition classes: AnyRef
  11. def == ( arg0 : Any ) : Boolean

    o == arg0 is the same as o.equals(arg0).

    o == arg0 is the same as o.equals(arg0).

    arg0

    the object to compare against this object for equality.

    returns

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

    attributes: final
    definition classes: Any
  12. def addString ( buf : StringBuilder ) : StringBuilder

    attributes: abstract
  13. def addString ( buf : StringBuilder , sep : String ) : StringBuilder

    attributes: abstract
  14. def addString ( buf : StringBuilder , start : String , sep : String , end : String ) : StringBuilder

    attributes: abstract
  15. def asInstanceOf [T0] : T0

    This method is used to cast the receiver object to be of type T0.

    This method is used to 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 typed.

    returns

    the receiver object.

    attributes: final
    definition classes: Any
  16. def clone () : AnyRef

    This method creates and returns a copy of the receiver object.

    This method creates and returns a copy of the receiver object.

    The default implementation of the clone method is platform dependent.

    returns

    a copy of the receiver object.

    attributes: protected[lang]
    definition classes: AnyRef
    annotations: @throws()
  17. def collect [B, That] ( pf : PartialFunction[A, B] )(implicit bf : CanBuildFrom[This, B, That] ) : That

    attributes: abstract
    definition classes: TraversableMethodsTraversableMethods
  18. def collectFirst [B] ( pf : PartialFunction[A, B] ) : Option[B]

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

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

    attributes: abstract
  21. def copyToArray [B >: A] ( xs : Array[B] ) : Unit

    attributes: abstract
  22. def copyToBuffer [B >: A] ( dest : Buffer[B] ) : Unit

    attributes: abstract
  23. def count ( p : (A) ⇒ Boolean ) : Int

    attributes: abstract
  24. def drop ( n : Int ) : Traversable[A]

    attributes: abstract
  25. def dropWhile ( p : (A) ⇒ Boolean ) : Traversable[A]

    attributes: abstract
  26. def eq ( arg0 : AnyRef ) : Boolean

    This method is used to test whether the argument (arg0) is a reference to the receiver object (this).

    This method is used to test whether the argument (arg0) is a reference to the receiver object (this).

    The eq method implements an [http://en.wikipedia.org/wiki/Equivalence_relation equivalence relation] on non-null instances of AnyRef: * It is reflexive: for any non-null instance x of type AnyRef, x.eq(x) returns true. * It is symmetric: for any non-null instances x and y of type AnyRef, x.eq(y) returns true if and only if y.eq(x) returns true. * It is transitive: for any non-null instances x, y, and z of type AnyRef if x.eq(y) returns true and y.eq(z) returns true, then x.eq(z) returns true.

    Additionally, the eq method has three other 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).

    arg0

    the object to compare against this object for reference equality.

    returns

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

    attributes: final
    definition classes: AnyRef
  27. def equals ( arg0 : Any ) : Boolean

    This method is used to compare the receiver object (this) with the argument object (arg0) for equivalence.

    This method is used to compare the receiver object (this) with the argument object (arg0) for equivalence.

    The default implementations of this method is an [http://en.wikipedia.org/wiki/Equivalence_relation equivalence relation]: * It is reflexive: for any instance x of type Any, x.equals(x) should return true. * It is symmetric: for any instances x and y of type Any, x.equals(y) should return true if and only if y.equals(x) returns true. * It is transitive: for any instances x, y, and z of type AnyRef if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.

    If you override this method, you should verify that your implementation remains an equivalence relation. Additionally, when overriding this method it is often necessary to override hashCode to ensure that objects that are "equal" (o1.equals(o2) returns true) hash to the same Int (o1.hashCode.equals(o2.hashCode)).

    arg0

    the object to compare against this object for equality.

    returns

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

    definition classes: AnyRef → Any
  28. def exists ( p : (A) ⇒ Boolean ) : Boolean

    attributes: abstract
  29. def filter ( p : (A) ⇒ Boolean ) : Traversable[A]

    attributes: abstract
  30. def filterNot ( p : (A) ⇒ Boolean ) : Traversable[A]

    attributes: abstract
  31. def finalize () : Unit

    This method is called by the garbage collector on the receiver object when garbage collection determines that there are no more references to the object.

    This method is called by the garbage collector on the receiver object when garbage collection determines that there are no more references to the object.

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

    attributes: protected[lang]
    definition classes: AnyRef
    annotations: @throws()
  32. def find ( p : (A) ⇒ Boolean ) : Option[A]

    attributes: abstract
  33. def flatMap [B, That] ( f : (A) ⇒ TraversableOnce[B] )(implicit bf : CanBuildFrom[This, B, That] ) : That

    attributes: abstract
    definition classes: TraversableMethodsTraversableMethods
  34. def foldLeft [B] ( z : B )( op : (B, A) ⇒ B ) : B

    attributes: abstract
  35. def foldRight [B] ( z : B )( op : (A, B) ⇒ B ) : B

    attributes: abstract
  36. def forall ( p : (A) ⇒ Boolean ) : Boolean

    attributes: abstract
  37. def foreach [U] ( f : (A) ⇒ U ) : Unit

    attributes: abstract
  38. def getClass () : java.lang.Class[_ <: java.lang.Object]

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

    Returns 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.

    attributes: final
    definition classes: AnyRef
  39. def groupBy [K] ( f : (A) ⇒ K ) : Map[K, Traversable[A]]

    attributes: abstract
  40. def hasDefiniteSize : Boolean

    attributes: abstract
  41. def hashCode () : Int

    Returns a hash code value for the object.

    Returns a hash code value for the object.

    The default hashing algorithm is platform dependent.

    Note that it is allowed for two objects to have identical hash codes (o1.hashCode.equals(o2.hashCode)) yet not be equal (o1.equals(o2) returns false). A degenerate implementation could always return 0. However, it is required that if two objects are equal (o1.equals(o2) returns true) that they have identical hash codes (o1.hashCode.equals(o2.hashCode)). Therefore, when overriding this method, be sure to verify that the behavior is consistent with the equals method.

    returns

    the hash code value for the object.

    definition classes: AnyRef → Any
  42. def head : A

    attributes: abstract
  43. def headOption : Option[A]

    attributes: abstract
  44. def init : Traversable[A]

    attributes: abstract
  45. def inits : Iterator[This]

    attributes: abstract
  46. def isEmpty : Boolean

    attributes: abstract
  47. def isInstanceOf [T0] : Boolean

    This method is used to test whether the dynamic type of the receiver object is T0.

    This method is used to test whether the dynamic type of the receiver object is T0.

    Note that the test 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 requested typed.

    returns

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

    attributes: final
    definition classes: Any
  48. def isTraversableAgain : Boolean

    attributes: abstract
  49. def last : A

    attributes: abstract
  50. def lastOption : Option[A]

    attributes: abstract
  51. def map [B, That] ( f : (A) ⇒ B )(implicit bf : CanBuildFrom[This, B, That] ) : That

    attributes: abstract
    definition classes: TraversableMethodsTraversableMethods
  52. def max [B >: A] (implicit cmp : Ordering[B] ) : A

    attributes: abstract
  53. def maxBy [B] ( f : (A) ⇒ B )(implicit cmp : Ordering[B] ) : A

    attributes: abstract
  54. def min [B >: A] (implicit cmp : Ordering[B] ) : A

    attributes: abstract
  55. def minBy [B] ( f : (A) ⇒ B )(implicit cmp : Ordering[B] ) : A

    attributes: abstract
  56. def mkString : String

    attributes: abstract
  57. def mkString ( sep : String ) : String

    attributes: abstract
  58. def mkString ( start : String , sep : String , end : String ) : String

    attributes: abstract
  59. def ne ( arg0 : AnyRef ) : Boolean

    o.ne(arg0) is the same as !(o.eq(arg0)).

    o.ne(arg0) is the same as !(o.eq(arg0)).

    arg0

    the object to compare against this object for reference dis-equality.

    returns

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

    attributes: final
    definition classes: AnyRef
  60. def nonEmpty : Boolean

    attributes: abstract
  61. 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.

    attributes: final
    definition classes: AnyRef
  62. 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.

    attributes: final
    definition classes: AnyRef
  63. def partition ( p : (A) ⇒ Boolean ) : (Traversable[A], Traversable[A])

    attributes: abstract
  64. def product [B >: A] (implicit num : Numeric[B] ) : B

    attributes: abstract
  65. def reduceLeft [B >: A] ( op : (B, A) ⇒ B ) : B

    attributes: abstract
  66. def reduceLeftOption [B >: A] ( op : (B, A) ⇒ B ) : Option[B]

    attributes: abstract
  67. def reduceRight [B >: A] ( op : (A, B) ⇒ B ) : B

    attributes: abstract
  68. def reduceRightOption [B >: A] ( op : (A, B) ⇒ B ) : Option[B]

    attributes: abstract
  69. def reversed : TraversableOnce[A]

    attributes: protected[this] abstract
  70. def scanLeft [B, That] ( z : B )( op : (B, A) ⇒ B )(implicit bf : CanBuildFrom[This, B, That] ) : That

    attributes: abstract
    definition classes: TraversableMethodsTraversableMethods
  71. def scanRight [B, That] ( z : B )( op : (A, B) ⇒ B )(implicit bf : CanBuildFrom[This, B, That] ) : That

    attributes: abstract
    definition classes: TraversableMethodsTraversableMethods
  72. def size : Int

    attributes: abstract
  73. def slice ( from : Int , until : Int ) : Traversable[A]

    attributes: abstract
  74. def span ( p : (A) ⇒ Boolean ) : (Traversable[A], Traversable[A])

    attributes: abstract
  75. def splitAt ( n : Int ) : (Traversable[A], Traversable[A])

    attributes: abstract
  76. def stringPrefix : String

    attributes: abstract
  77. def sum [B >: A] (implicit num : Numeric[B] ) : B

    attributes: abstract
  78. def synchronized [T0] ( arg0 : ⇒ T0 ) : T0

    attributes: final
    definition classes: AnyRef
  79. def tail : Traversable[A]

    attributes: abstract
  80. def tails : Iterator[This]

    attributes: abstract
  81. def take ( n : Int ) : Traversable[A]

    attributes: abstract
  82. def takeWhile ( p : (A) ⇒ Boolean ) : Traversable[A]

    attributes: abstract
  83. def toArray [B >: A] (implicit arg0 : ClassManifest[B] ) : Array[B]

    attributes: abstract
  84. def toBuffer [B >: A] : Buffer[B]

    attributes: abstract
  85. def toIndexedSeq [B >: A] : IndexedSeq[B]

    attributes: abstract
  86. def toIterable : Iterable[A]

    attributes: abstract
  87. def toIterator : Iterator[A]

    attributes: abstract
  88. def toList : List[A]

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

    attributes: abstract
  90. def toSeq : Seq[A]

    attributes: abstract
  91. def toSet [B >: A] : Set[B]

    attributes: abstract
  92. def toStream : Stream[A]

    attributes: abstract
  93. def toString () : String

    Returns a string representation of the object.

    Returns a string representation of the object.

    The default representation is platform dependent.

    returns

    a string representation of the object.

    definition classes: AnyRef → Any
  94. def toTraversable : Traversable[A]

    attributes: abstract
  95. def view ( from : Int , until : Int ) : TraversableView[A, This]

    attributes: abstract
  96. def view : TraversableView[A, This]

    attributes: abstract
  97. def wait () : Unit

    attributes: final
    definition classes: AnyRef
    annotations: @throws()
  98. def wait ( arg0 : Long , arg1 : Int ) : Unit

    attributes: final
    definition classes: AnyRef
    annotations: @throws()
  99. def wait ( arg0 : Long ) : Unit

    attributes: final
    definition classes: AnyRef
    annotations: @throws()
  100. def withFilter ( p : (A) ⇒ Boolean ) : FilterMonadic[A, Traversable[A]]

    attributes: abstract

Inherited from TraversableOnceMethods[A]

Inherited from AnyRef

Inherited from Any