Package org.eclipse.collections.impl.utility.internal

Class SetIterables

java.lang.Object

org.eclipse.collections.impl.utility.internal.SetIterables

public final class SetIterables
extends java.lang.Object

Set algebra operations.

Most operations are non-destructive, i.e. no input sets are modified during execution. The exception is operations ending in "Into." These accept the target collection of the final calculation as the first parameter.

Method Summary

Modifier and Type	Method	Description
static <A,B> LazyIterable<Pair<A,B>>	cartesianProduct(SetIterable<A> set1, SetIterable<B> set2)
static <A,B,C> LazyIterable<C>	cartesianProduct(SetIterable<A> set1, SetIterable<B> set2, Function2<A,B,C> function)
static <E> MutableSet<E>	difference(SetIterable<? extends E> minuendSet, SetIterable<? extends E> subtrahendSet)
static <E,R extends java.util.Set<E>> R	differenceInto(SetIterable<? extends E> minuendSet, SetIterable<? extends E> subtrahendSet, R targetSet)
static <T> ImmutableSet<ImmutableSet<T>>	immutablePowerSet(java.util.Set<T> set)	Returns an Immutable version of powerset where the inner sets are also immutable.
static <E> MutableSet<E>	intersect(SetIterable<? extends E> setA, SetIterable<? extends E> setB)
static <E,R extends java.util.Set<E>> R	intersectInto(SetIterable<? extends E> setA, SetIterable<? extends E> setB, R targetSet)
static <E> boolean	isProperSubsetOf(SetIterable<? extends E> candidateSubset, SetIterable<? extends E> candidateSuperset)
static <E> boolean	isSubsetOf(SetIterable<? extends E> candidateSubset, SetIterable<? extends E> candidateSuperset)
static <T> MutableSet<MutableSet<T>>	powerSet(java.util.Set<T> set)
static <T> MutableSet<MutableSet<T>>	powerSet(UnifiedSetWithHashingStrategy<T> set)
static <E> MutableSet<E>	symmetricDifference(SetIterable<? extends E> setA, SetIterable<? extends E> setB)
static <E,R extends java.util.Set<E>> R	symmetricDifferenceInto(SetIterable<? extends E> setA, SetIterable<? extends E> setB, R targetSet)
static <E> MutableSet<E>	union(SetIterable<? extends E> setA, SetIterable<? extends E> setB)
static <E,R extends java.util.Set<E>> R	unionInto(SetIterable<? extends E> setA, SetIterable<? extends E> setB, R targetSet)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

union

public static <E> MutableSet<E> union(SetIterable<? extends E> setA,
                                      SetIterable<? extends E> setB)

unionInto

public static <E,R extends java.util.Set<E>> R unionInto(SetIterable<? extends E> setA,
                                                         SetIterable<? extends E> setB,
                                                         R targetSet)

intersect

public static <E> MutableSet<E> intersect(SetIterable<? extends E> setA,
                                          SetIterable<? extends E> setB)

intersectInto

public static <E,R extends java.util.Set<E>> R intersectInto(SetIterable<? extends E> setA,
                                                             SetIterable<? extends E> setB,
                                                             R targetSet)

difference

public static <E> MutableSet<E> difference(SetIterable<? extends E> minuendSet,
                                           SetIterable<? extends E> subtrahendSet)

differenceInto

public static <E,R extends java.util.Set<E>> R differenceInto(SetIterable<? extends E> minuendSet,
                                                              SetIterable<? extends E> subtrahendSet,
                                                              R targetSet)

symmetricDifference

public static <E> MutableSet<E> symmetricDifference(SetIterable<? extends E> setA,
                                                    SetIterable<? extends E> setB)

symmetricDifferenceInto

public static <E,R extends java.util.Set<E>> R symmetricDifferenceInto(SetIterable<? extends E> setA,
                                                                       SetIterable<? extends E> setB,
                                                                       R targetSet)

isSubsetOf

public static <E> boolean isSubsetOf(SetIterable<? extends E> candidateSubset,
                                     SetIterable<? extends E> candidateSuperset)

isProperSubsetOf

public static <E> boolean isProperSubsetOf(SetIterable<? extends E> candidateSubset,
                                           SetIterable<? extends E> candidateSuperset)

powerSet

public static <T> MutableSet<MutableSet<T>> powerSet(java.util.Set<T> set)

powerSet

public static <T> MutableSet<MutableSet<T>> powerSet(UnifiedSetWithHashingStrategy<T> set)

immutablePowerSet

public static <T> ImmutableSet<ImmutableSet<T>> immutablePowerSet(java.util.Set<T> set)

Returns an Immutable version of powerset where the inner sets are also immutable.

cartesianProduct

public static <A,B> LazyIterable<Pair<A,B>> cartesianProduct(SetIterable<A> set1,
                                                             SetIterable<B> set2)

cartesianProduct

public static <A,B,C> LazyIterable<C> cartesianProduct(SetIterable<A> set1,
                                                       SetIterable<B> set2,
                                                       Function2<A,B,C> function)