scala.collection.mutable

trait MultiMap

[source: scala/collection/mutable/MultiMap.scala]

trait MultiMap[A, B]
extends Map[A, Set[B]]
This class is typically used as a mixin. It turns maps which map A to Set[B] objects into multi maps which map A to B objects.
Author
Matthias Zenger
Martin Odersky
Version
2.8
Since
1
Method Summary
def addBinding (key : A, value : B) : MultiMap[A, B]
def entryExists (key : A, p : (B) => Boolean) : Boolean
protected def makeSet : Set[B]
def removeBinding (key : A, value : B) : MultiMap[A, B]
Methods inherited from Map
empty
Methods inherited from MapLike
+= (abstract), -= (abstract), newBuilder, put, update, updated, cached, +, +, ++, ++, remove, -, removeKey, clear, getOrElseUpdate, transform, retain, clone, result, -, --, --
Methods inherited from Shrinkable
-=, --=, --=
Methods inherited from Builder
sizeHint, mapResult
Methods inherited from Growable
+=, ++=, ++=
Methods inherited from MapLikeBase
+
Methods inherited from MapLike
get (abstract), iterator (abstract), isEmpty, getOrElse, apply, contains, isDefinedAt, keySet, keysIterator, keys, valuesIterable, valuesIterator, values, default, filterKeys, mapValues, mapElements, +, ++, ++, addString, stringPrefix, toString, hashCode, equals
Methods inherited from PartialFunction
orElse, andThen
Methods inherited from Function1
compose
Methods inherited from Iterable
companion
Methods inherited from IterableLike
thisCollection, toCollection, elements, foreach, forall, exists, find, foldRight, reduceRight, toIterable, head, take, slice, takeWhile, takeRight, dropRight, copyToArray, zip, zipAll, zipWithIndex, sameElements, toStream, canEqual, view, view, first, firstOption, projection
Methods inherited from GenericTraversableTemplate
genericBuilder, unzip, flatten, transpose
Methods inherited from TraversableLike
repr, nonEmpty, size, hasDefiniteSize, ++, ++, map, flatMap, filter, filterNot, partialMap, remove, partition, groupBy, count, foldLeft, /:, :\, reduceLeft, reduceLeftOption, reduceRightOption, sum, product, min, max, headOption, tail, last, lastOption, init, drop, dropWhile, span, splitAt, copyToBuffer, copyToArray, toArray, toList, toSeq, toIndexedSeq, toSet, mkString, mkString, mkString, addString, addString, withFilter
Methods inherited from AnyRef
getClass, notify, notifyAll, wait, wait, wait, finalize, ==, !=, eq, ne, synchronized
Methods inherited from Any
==, !=, isInstanceOf, asInstanceOf
Method Details
protected def makeSet : Set[B]

def addBinding(key : A, value : B) : MultiMap[A, B]

def removeBinding(key : A, value : B) : MultiMap[A, B]

def entryExists(key : A, p : (B) => Boolean) : Boolean