|
Scala Library
|
|
scala/collection/immutable/Set.scala]
trait
Set[A]
extends Iterable[A] with Set[A] with SetClass[A, Set] with SetTemplate[A, Set[A]]
A generic trait for immutable sets. Concrete set implementations have
to provide functionality for the abstract methods in Set:
def contains(elem: A): Boolean
def iterator: Iterator[A]
def + (elem: A): This
def - (elem: A): This
where This is the type of the set.
| Method Summary | |
override def
|
companion
: Companion[Set]
The factory companion object that builds instances of class CC
|
override def
|
hashCode
: Int
Returns a hash code value for the object.
|
| Methods inherited from SetTemplate | |
| contains (abstract), + (abstract), - (abstract), newBuilder, isEmpty, apply, intersect, &, **, union, |, diff, &~, subsetOf, equals, stringPrefix, toString |
| Methods inherited from Subtractable | |
| -, --, -- |
| Methods inherited from Addable | |
| +, ++, ++ |
| Methods inherited from SetClass | |
| empty |
| Methods inherited from Function1 | |
| compose, andThen |
| Methods inherited from IterableTemplate | |
| iterator (abstract), elements, foreach, foldRight, reduceRight, toIterable, head, takeRight, dropRight, sameElements, toStream, view, view, first, firstOption, toSeq, projection |
| Methods inherited from TraversableClass | |
| genericBuilder, unzip, flatten, transpose |
| Methods inherited from TraversableTemplate | |
| thisCollection, nonEmpty, size, hasDefiniteSize, ++, ++, map, flatMap, filter, filterMap, filterNot, remove, partition, groupBy, forall, exists, count, find, foldLeft, /:, :\, reduceLeft, reduceLeftOption, reduceRightOption, headOption, tail, last, lastOption, init, take, drop, slice, takeWhile, dropWhile, span, splitAt, copyToBuffer, copyToArray, copyToArray, toArray, toList, toSequence, toSet, mkString, mkString, mkString, addString, addString, addString |
| Methods inherited from AnyRef | |
| getClass, clone, notify, notifyAll, wait, wait, wait, finalize, ==, !=, eq, ne, synchronized |
| Methods inherited from Any | |
| ==, !=, isInstanceOf, asInstanceOf |
| Method Details |
override
def
hashCode : Int
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.
|
Scala Library
|
|