com.gs.collections.impl.collection.immutable

Class AbstractImmutableCollection<T>

java.lang.Object

com.gs.collections.impl.collection.immutable.AbstractImmutableCollection<T>

All Implemented Interfaces:

com.gs.collections.api.collection.ImmutableCollection<T>, com.gs.collections.api.InternalIterable<T>, com.gs.collections.api.RichIterable<T>, java.lang.Iterable<T>, java.util.Collection<T>

Direct Known Subclasses:

AbstractImmutableBag, AbstractImmutableSet

public abstract class AbstractImmutableCollection<T>
extends java.lang.Object
implements com.gs.collections.api.collection.ImmutableCollection<T>, java.util.Collection<T>

Constructor Summary

Constructors

Constructor and Description
AbstractImmutableCollection()

Method Summary

Methods

Modifier and Type	Method and Description
boolean	add(T t)
boolean	addAll(java.util.Collection<? extends T> collection)
<K,V> com.gs.collections.api.map.ImmutableMap<K,V>	aggregateBy(com.gs.collections.api.block.function.Function<? super T,? extends K> groupBy, com.gs.collections.api.block.function.Function0<? extends V> zeroValueFactory, com.gs.collections.api.block.function.Function2<? super V,? super T,? extends V> nonMutatingAggregator) Applies an aggregate function over the iterable grouping results into a map based on the specific groupBy function.
<K,V> com.gs.collections.api.map.ImmutableMap<K,V>	aggregateInPlaceBy(com.gs.collections.api.block.function.Function<? super T,? extends K> groupBy, com.gs.collections.api.block.function.Function0<? extends V> zeroValueFactory, com.gs.collections.api.block.procedure.Procedure2<? super V,? super T> mutatingAggregator) Applies an aggregate procedure over the iterable grouping results into a Map based on the specific groupBy function.
boolean	allSatisfy(com.gs.collections.api.block.predicate.Predicate<? super T> predicate) Returns true if the predicate evaluates to true for every element of the iterable or if the iterable is empty.
boolean	anySatisfy(com.gs.collections.api.block.predicate.Predicate<? super T> predicate) Returns true if the predicate evaluates to true for any element of the iterable.
void	appendString(java.lang.Appendable appendable) Prints a string representation of this collection onto the given Appendable.
void	appendString(java.lang.Appendable appendable, java.lang.String separator) Prints a string representation of this collection onto the given Appendable.
void	appendString(java.lang.Appendable appendable, java.lang.String start, java.lang.String separator, java.lang.String end) Prints a string representation of this collection onto the given Appendable.
com.gs.collections.api.LazyIterable<T>	asLazy() Returns a deferred iterable, most likely implemented by calling LazyIterate.defer(this).
com.gs.collections.api.RichIterable<com.gs.collections.api.RichIterable<T>>	chunk(int size) Partitions elements in fixed size chunks.
void	clear()
<V,R extends java.util.Collection<V>> R	collect(com.gs.collections.api.block.function.Function<? super T,? extends V> function, R target) Same as RichIterable.collect(Function), except that the results are gathered into the specified target collection.
com.gs.collections.api.collection.primitive.ImmutableBooleanCollection	collectBoolean(com.gs.collections.api.block.function.primitive.BooleanFunction<? super T> booleanFunction) Returns a new primitive boolean iterable with the results of applying the specified function on each element of the source collection.
com.gs.collections.api.collection.primitive.ImmutableByteCollection	collectByte(com.gs.collections.api.block.function.primitive.ByteFunction<? super T> byteFunction) Returns a new primitive byte iterable with the results of applying the specified function on each element of the source collection.
com.gs.collections.api.collection.primitive.ImmutableCharCollection	collectChar(com.gs.collections.api.block.function.primitive.CharFunction<? super T> charFunction) Returns a new primitive char iterable with the results of applying the specified function on each element of the source collection.
com.gs.collections.api.collection.primitive.ImmutableDoubleCollection	collectDouble(com.gs.collections.api.block.function.primitive.DoubleFunction<? super T> doubleFunction) Returns a new primitive double iterable with the results of applying the specified function on each element of the source collection.
com.gs.collections.api.collection.primitive.ImmutableFloatCollection	collectFloat(com.gs.collections.api.block.function.primitive.FloatFunction<? super T> floatFunction) Returns a new primitive float iterable with the results of applying the specified function on each element of the source collection.
<V,R extends java.util.Collection<V>> R	collectIf(com.gs.collections.api.block.predicate.Predicate<? super T> predicate, com.gs.collections.api.block.function.Function<? super T,? extends V> function, R target) Same as the collectIf method with two parameters but uses the specified target collection for the results.
com.gs.collections.api.collection.primitive.ImmutableIntCollection	collectInt(com.gs.collections.api.block.function.primitive.IntFunction<? super T> intFunction) Returns a new primitive int iterable with the results of applying the specified function on each element of the source collection.
com.gs.collections.api.collection.primitive.ImmutableLongCollection	collectLong(com.gs.collections.api.block.function.primitive.LongFunction<? super T> longFunction) Returns a new primitive long iterable with the results of applying the specified function on each element of the source collection.
com.gs.collections.api.collection.primitive.ImmutableShortCollection	collectShort(com.gs.collections.api.block.function.primitive.ShortFunction<? super T> shortFunction) Returns a new primitive short iterable with the results of applying the specified function on each element of the source collection.
<P,V,R extends java.util.Collection<V>> R	collectWith(com.gs.collections.api.block.function.Function2<? super T,? super P,? extends V> function, P parameter, R targetCollection) Same as collectWith but with a targetCollection parameter to gather the results.
boolean	contains(java.lang.Object object) Returns true if the iterable has an element which responds true to element.equals(object).
boolean	containsAll(java.util.Collection<?> collection)
boolean	containsAllArguments(java.lang.Object... elements) Returns true if all elements in the specified var arg array are contained in this collection.
boolean	containsAllIterable(java.lang.Iterable<?> source) Returns true if all elements in source are contained in this collection.
int	count(com.gs.collections.api.block.predicate.Predicate<? super T> predicate) Return the total number of elements that answer true to the specified predicate.
T	detect(com.gs.collections.api.block.predicate.Predicate<? super T> predicate) Returns the first element of the iterable for which the predicate evaluates to true or null in the case where no element returns true.
T	detectIfNone(com.gs.collections.api.block.predicate.Predicate<? super T> predicate, com.gs.collections.api.block.function.Function0<? extends T> function) Returns the first element of the iterable for which the predicate evaluates to true.
<V,R extends java.util.Collection<V>> R	flatCollect(com.gs.collections.api.block.function.Function<? super T,? extends java.lang.Iterable<V>> function, R target) Same as flatCollect, only the results are collected into the target collection.
<P> void	forEachWith(com.gs.collections.api.block.procedure.Procedure2<? super T,? super P> procedure, P parameter) The procedure2 is evaluated for each element in the iterable with the specified parameter provided as the second argument.
void	forEachWithIndex(com.gs.collections.api.block.procedure.primitive.ObjectIntProcedure<? super T> objectIntProcedure) Iterates over the iterable passing each element and the current relative int index to the specified instance of ObjectIntProcedure
double	injectInto(double injectedValue, com.gs.collections.api.block.function.primitive.DoubleObjectToDoubleFunction<? super T> function) Returns the final double result of evaluating function using each element of the iterable and the previous evaluation result as the parameters.
float	injectInto(float injectedValue, com.gs.collections.api.block.function.primitive.FloatObjectToFloatFunction<? super T> function) Returns the final float result of evaluating function using each element of the iterable and the previous evaluation result as the parameters.
int	injectInto(int injectedValue, com.gs.collections.api.block.function.primitive.IntObjectToIntFunction<? super T> function) Returns the final int result of evaluating function using each element of the iterable and the previous evaluation result as the parameters.
<IV> IV	injectInto(IV injectedValue, com.gs.collections.api.block.function.Function2<? super IV,? super T,? extends IV> function) Returns the final result of evaluating function using each element of the iterable and the previous evaluation result as the parameters.
long	injectInto(long injectedValue, com.gs.collections.api.block.function.primitive.LongObjectToLongFunction<? super T> function) Returns the final long result of evaluating function using each element of the iterable and the previous evaluation result as the parameters.
boolean	isEmpty() Returns true if this iterable has zero items.
java.lang.String	makeString() Returns a string representation of this collection by delegating to RichIterable.makeString(String) and defaulting the separator parameter to the characters ", " (comma and space).
java.lang.String	makeString(java.lang.String separator) Returns a string representation of this collection by delegating to RichIterable.makeString(String, String, String) and defaulting the start and end parameters to "" (the empty String).
java.lang.String	makeString(java.lang.String start, java.lang.String separator, java.lang.String end) Returns a string representation of this collection.
T	max() Returns the maximum element out of this container based on the natural order.
T	max(java.util.Comparator<? super T> comparator) Returns the maximum element out of this container based on the comparator.
<V extends java.lang.Comparable<? super V>> T	maxBy(com.gs.collections.api.block.function.Function<? super T,? extends V> function) Returns the maximum elements out of this container based on the natural order of the attribute returned by Function.
T	min() Returns the minimum element out of this container based on the natural order.
T	min(java.util.Comparator<? super T> comparator) Returns the minimum element out of this container based on the comparator.
<V extends java.lang.Comparable<? super V>> T	minBy(com.gs.collections.api.block.function.Function<? super T,? extends V> function) Returns the minimum elements out of this container based on the natural order of the attribute returned by Function.
protected abstract com.gs.collections.api.collection.MutableCollection<T>	newMutable(int size)
boolean	noneSatisfy(com.gs.collections.api.block.predicate.Predicate<? super T> predicate) Returns true if the predicate evaluates to false for every element of the iterable or if the iterable is empty.
boolean	notEmpty() The English equivalent of !this.isEmpty()
<R extends java.util.Collection<T>> R	reject(com.gs.collections.api.block.predicate.Predicate<? super T> predicate, R target) Same as the reject method with one parameter but uses the specified target collection for the results.
<P,R extends java.util.Collection<T>> R	rejectWith(com.gs.collections.api.block.predicate.Predicate2<? super T,? super P> predicate, P parameter, R targetCollection) Similar to RichIterable.reject(Predicate, Collection), except with an evaluation parameter for the second generic argument in Predicate2.
boolean	remove(java.lang.Object o)
boolean	removeAll(java.util.Collection<?> collection)
protected void	removeAllFrom(java.lang.Iterable<? extends T> elements, com.gs.collections.api.collection.MutableCollection<T> result)
boolean	retainAll(java.util.Collection<?> collection)
<R extends java.util.Collection<T>> R	select(com.gs.collections.api.block.predicate.Predicate<? super T> predicate, R target) Same as the select method with one parameter but uses the specified target collection for the results.
<P,R extends java.util.Collection<T>> R	selectWith(com.gs.collections.api.block.predicate.Predicate2<? super T,? super P> predicate, P parameter, R targetCollection) Similar to RichIterable.select(Predicate, Collection), except with an evaluation parameter for the second generic argument in Predicate2.
double	sumOfDouble(com.gs.collections.api.block.function.primitive.DoubleFunction<? super T> function) Returns the final double result of evaluating function for each element of the iterable and adding the results together.
double	sumOfFloat(com.gs.collections.api.block.function.primitive.FloatFunction<? super T> function) Returns the final double result of evaluating function for each element of the iterable and adding the results together.
long	sumOfInt(com.gs.collections.api.block.function.primitive.IntFunction<? super T> function) Returns the final long result of evaluating function for each element of the iterable and adding the results together.
long	sumOfLong(com.gs.collections.api.block.function.primitive.LongFunction<? super T> function) Returns the final long result of evaluating function for each element of the iterable and adding the results together.
java.lang.Object[]	toArray()
<E> E[]	toArray(E[] array)
com.gs.collections.api.bag.MutableBag<T>	toBag() Converts the collection to the default MutableBag implementation.
com.gs.collections.api.list.MutableList<T>	toList() Converts the collection to a MutableList implementation.
<K,V> com.gs.collections.api.map.MutableMap<K,V>	toMap(com.gs.collections.api.block.function.Function<? super T,? extends K> keyFunction, com.gs.collections.api.block.function.Function<? super T,? extends V> valueFunction) Converts the collection to a MutableMap implementation using the specified key and value functions.
com.gs.collections.api.set.MutableSet<T>	toSet() Converts the collection to a MutableSet implementation.
com.gs.collections.api.list.MutableList<T>	toSortedList() Converts the collection to a MutableList implementation and sorts it using the natural order of the elements.
com.gs.collections.api.list.MutableList<T>	toSortedList(java.util.Comparator<? super T> comparator) Converts the collection to a MutableList implementation and sorts it using the specified comparator.
<V extends java.lang.Comparable<? super V>> com.gs.collections.api.list.MutableList<T>	toSortedListBy(com.gs.collections.api.block.function.Function<? super T,? extends V> function) Converts the collection to a MutableList implementation and sorts it based on the natural order of the attribute returned by function.
<K,V> com.gs.collections.api.map.sorted.MutableSortedMap<K,V>	toSortedMap(java.util.Comparator<? super K> comparator, com.gs.collections.api.block.function.Function<? super T,? extends K> keyFunction, com.gs.collections.api.block.function.Function<? super T,? extends V> valueFunction) Converts the collection to a MutableSortedMap implementation using the specified key and value functions sorted by the given comparator.
<K,V> com.gs.collections.api.map.sorted.MutableSortedMap<K,V>	toSortedMap(com.gs.collections.api.block.function.Function<? super T,? extends K> keyFunction, com.gs.collections.api.block.function.Function<? super T,? extends V> valueFunction) Converts the collection to a MutableSortedMap implementation using the specified key and value functions sorted by the key elements' natural ordering.
com.gs.collections.api.set.sorted.MutableSortedSet<T>	toSortedSet() Converts the collection to a MutableSortedSet implementation and sorts it using the natural order of the elements.
com.gs.collections.api.set.sorted.MutableSortedSet<T>	toSortedSet(java.util.Comparator<? super T> comparator) Converts the collection to a MutableSortedSet implementation and sorts it using the specified comparator.
<V extends java.lang.Comparable<? super V>> com.gs.collections.api.set.sorted.MutableSortedSet<T>	toSortedSetBy(com.gs.collections.api.block.function.Function<? super T,? extends V> function) Converts the collection to a MutableSortedSet implementation and sorts it based on the natural order of the attribute returned by function.
java.lang.String	toString() Returns a string representation of this collection.
<S,R extends java.util.Collection<com.gs.collections.api.tuple.Pair<T,S>>> R	zip(java.lang.Iterable<S> that, R target) Same as RichIterable.zip(Iterable) but uses target for output.
<R extends java.util.Collection<com.gs.collections.api.tuple.Pair<T,java.lang.Integer>>> R	zipWithIndex(R target) Same as RichIterable.zipWithIndex() but uses target for output.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.gs.collections.api.collection.ImmutableCollection

collect, collectIf, flatCollect, groupBy, groupByEach, newWith, newWithAll, newWithout, newWithoutAll, partition, reject, select, selectInstancesOf, zip, zipWithIndex

Methods inherited from interface com.gs.collections.api.RichIterable

getFirst, getLast, groupBy, groupByEach, size

Methods inherited from interface com.gs.collections.api.InternalIterable

forEach

Methods inherited from interface java.lang.Iterable

iterator

Methods inherited from interface java.util.Collection

equals, hashCode, iterator, size

Constructor Detail

AbstractImmutableCollection

public AbstractImmutableCollection()

Method Detail

removeAllFrom

protected void removeAllFrom(java.lang.Iterable<? extends T> elements,
                 com.gs.collections.api.collection.MutableCollection<T> result)

contains

public boolean contains(java.lang.Object object)

Description copied from interface: com.gs.collections.api.RichIterable

Returns true if the iterable has an element which responds true to element.equals(object).

Specified by:

contains in interface com.gs.collections.api.RichIterable<T>

Specified by:

contains in interface java.util.Collection<T>

containsAllIterable

public boolean containsAllIterable(java.lang.Iterable<?> source)

Description copied from interface: com.gs.collections.api.RichIterable

Returns true if all elements in source are contained in this collection.

Specified by:

containsAllIterable in interface com.gs.collections.api.RichIterable<T>

containsAllArguments

public boolean containsAllArguments(java.lang.Object... elements)

Description copied from interface: com.gs.collections.api.RichIterable

Returns true if all elements in the specified var arg array are contained in this collection.

Specified by:

containsAllArguments in interface com.gs.collections.api.RichIterable<T>

toArray

public java.lang.Object[] toArray()

Specified by:

toArray in interface com.gs.collections.api.RichIterable<T>

Specified by:

toArray in interface java.util.Collection<T>

See Also:

Collection.toArray()

toArray

public <E> E[] toArray(E[] array)

Specified by:

toArray in interface com.gs.collections.api.RichIterable<T>

Specified by:

toArray in interface java.util.Collection<T>

See Also:

Collection.toArray(Object[])

isEmpty

public boolean isEmpty()

Description copied from interface: com.gs.collections.api.RichIterable

Returns true if this iterable has zero items.

Specified by:

isEmpty in interface com.gs.collections.api.RichIterable<T>

Specified by:

isEmpty in interface java.util.Collection<T>

notEmpty

public boolean notEmpty()

Description copied from interface: com.gs.collections.api.RichIterable

The English equivalent of !this.isEmpty()

Specified by:

notEmpty in interface com.gs.collections.api.RichIterable<T>

toList

public com.gs.collections.api.list.MutableList<T> toList()

Description copied from interface: com.gs.collections.api.RichIterable

Converts the collection to a MutableList implementation.

Specified by:

toList in interface com.gs.collections.api.RichIterable<T>

toSortedList

public com.gs.collections.api.list.MutableList<T> toSortedList()

Description copied from interface: com.gs.collections.api.RichIterable

Converts the collection to a MutableList implementation and sorts it using the natural order of the elements.

Specified by:

toSortedList in interface com.gs.collections.api.RichIterable<T>

toSortedList

public com.gs.collections.api.list.MutableList<T> toSortedList(java.util.Comparator<? super T> comparator)

Description copied from interface: com.gs.collections.api.RichIterable

Converts the collection to a MutableList implementation and sorts it using the specified comparator.

Specified by:

toSortedList in interface com.gs.collections.api.RichIterable<T>

toSortedListBy

public <V extends java.lang.Comparable<? super V>> com.gs.collections.api.list.MutableList<T> toSortedListBy(com.gs.collections.api.block.function.Function<? super T,? extends V> function)

Description copied from interface: com.gs.collections.api.RichIterable

Converts the collection to a MutableList implementation and sorts it based on the natural order of the attribute returned by function.

Specified by:

toSortedListBy in interface com.gs.collections.api.RichIterable<T>

toSortedSet

public com.gs.collections.api.set.sorted.MutableSortedSet<T> toSortedSet()

Description copied from interface: com.gs.collections.api.RichIterable

Converts the collection to a MutableSortedSet implementation and sorts it using the natural order of the elements.

Specified by:

toSortedSet in interface com.gs.collections.api.RichIterable<T>

toSortedSet

public com.gs.collections.api.set.sorted.MutableSortedSet<T> toSortedSet(java.util.Comparator<? super T> comparator)

Description copied from interface: com.gs.collections.api.RichIterable

Converts the collection to a MutableSortedSet implementation and sorts it using the specified comparator.

Specified by:

toSortedSet in interface com.gs.collections.api.RichIterable<T>

toSortedSetBy

public <V extends java.lang.Comparable<? super V>> com.gs.collections.api.set.sorted.MutableSortedSet<T> toSortedSetBy(com.gs.collections.api.block.function.Function<? super T,? extends V> function)

Description copied from interface: com.gs.collections.api.RichIterable

Converts the collection to a MutableSortedSet implementation and sorts it based on the natural order of the attribute returned by function.

Specified by:

toSortedSetBy in interface com.gs.collections.api.RichIterable<T>

toSet

public com.gs.collections.api.set.MutableSet<T> toSet()

Description copied from interface: com.gs.collections.api.RichIterable

Converts the collection to a MutableSet implementation.

Specified by:

toSet in interface com.gs.collections.api.RichIterable<T>

toBag

public com.gs.collections.api.bag.MutableBag<T> toBag()

Description copied from interface: com.gs.collections.api.RichIterable

Converts the collection to the default MutableBag implementation.

Specified by:

toBag in interface com.gs.collections.api.RichIterable<T>

toMap

public <K,V> com.gs.collections.api.map.MutableMap<K,V> toMap(com.gs.collections.api.block.function.Function<? super T,? extends K> keyFunction,
                                                     com.gs.collections.api.block.function.Function<? super T,? extends V> valueFunction)

Description copied from interface: com.gs.collections.api.RichIterable

Converts the collection to a MutableMap implementation using the specified key and value functions.

Specified by:

toMap in interface com.gs.collections.api.RichIterable<T>

toSortedMap

public <K,V> com.gs.collections.api.map.sorted.MutableSortedMap<K,V> toSortedMap(com.gs.collections.api.block.function.Function<? super T,? extends K> keyFunction,
                                                                        com.gs.collections.api.block.function.Function<? super T,? extends V> valueFunction)

Description copied from interface: com.gs.collections.api.RichIterable

Converts the collection to a MutableSortedMap implementation using the specified key and value functions sorted by the key elements' natural ordering.

Specified by:

toSortedMap in interface com.gs.collections.api.RichIterable<T>

toSortedMap

public <K,V> com.gs.collections.api.map.sorted.MutableSortedMap<K,V> toSortedMap(java.util.Comparator<? super K> comparator,
                                                                        com.gs.collections.api.block.function.Function<? super T,? extends K> keyFunction,
                                                                        com.gs.collections.api.block.function.Function<? super T,? extends V> valueFunction)

Description copied from interface: com.gs.collections.api.RichIterable

Converts the collection to a MutableSortedMap implementation using the specified key and value functions sorted by the given comparator.

Specified by:

toSortedMap in interface com.gs.collections.api.RichIterable<T>

select

public <R extends java.util.Collection<T>> R select(com.gs.collections.api.block.predicate.Predicate<? super T> predicate,
                                           R target)

Description copied from interface: com.gs.collections.api.RichIterable

Same as the select method with one parameter but uses the specified target collection for the results.

e.g.
 return people.select(new Predicate<Person>()
 {
     public boolean accept(Person person)
     {
         return person.person.getLastName().equals("Smith");
     }
 }, Lists.mutable.of());
 

e.g.
 return collection.select(Predicates.attributeEqual("lastName", "Smith"), new ArrayList());
 

Specified by:

select in interface com.gs.collections.api.RichIterable<T>

Parameters:

predicate - a Predicate to use as the select criteria

target - the Collection to append to for all elements in this RichIterable that meet select criteria predicate

Returns:

target, which contains appended elements as a result of the select criteria

See Also:

RichIterable.select(Predicate)

selectWith

public <P,R extends java.util.Collection<T>> R selectWith(com.gs.collections.api.block.predicate.Predicate2<? super T,? super P> predicate,
                                                 P parameter,
                                                 R targetCollection)

Description copied from interface: com.gs.collections.api.RichIterable

Similar to RichIterable.select(Predicate, Collection), except with an evaluation parameter for the second generic argument in Predicate2.

Specified by:

selectWith in interface com.gs.collections.api.RichIterable<T>

Parameters:

predicate - a Predicate2 to use as the select criteria

parameter - a parameter to pass in for evaluation of the second argument P in predicate

targetCollection - the Collection to append to for all elements in this RichIterable that meet select criteria predicate

Returns:

targetCollection, which contains appended elements as a result of the select criteria

See Also:

RichIterable.select(Predicate), RichIterable.select(Predicate, Collection)

reject

public <R extends java.util.Collection<T>> R reject(com.gs.collections.api.block.predicate.Predicate<? super T> predicate,
                                           R target)

Description copied from interface: com.gs.collections.api.RichIterable

Same as the reject method with one parameter but uses the specified target collection for the results.

e.g.
 return people.reject(new Predicate<Person>()
 {
     public boolean accept(Person person)
     {
         return person.person.getLastName().equals("Smith");
     }
 }, Lists.mutable.of());
 

Specified by:

reject in interface com.gs.collections.api.RichIterable<T>

Parameters:

predicate - a Predicate to use as the reject criteria

target - the Collection to append to for all elements in this RichIterable that cause Predicate#accept(Object) method to evaluate to false

Returns:

target, which contains appended elements as a result of the reject criteria

rejectWith

public <P,R extends java.util.Collection<T>> R rejectWith(com.gs.collections.api.block.predicate.Predicate2<? super T,? super P> predicate,
                                                 P parameter,
                                                 R targetCollection)

Description copied from interface: com.gs.collections.api.RichIterable

Similar to RichIterable.reject(Predicate, Collection), except with an evaluation parameter for the second generic argument in Predicate2.

E.g. return a Collection of Person elements where the person has a height greater than 100cm

 return people.reject(new Predicate2<Person, Integer>()
 {
     public boolean accept(Person p, Integer i)
     {
         return p.getHeightInCm() < i.intValue();
     }
 }, Integer.valueOf(100), FastList.newList());
 

Specified by:

rejectWith in interface com.gs.collections.api.RichIterable<T>

Parameters:

predicate - a Predicate2 to use as the reject criteria

parameter - a parameter to pass in for evaluation of the second argument P in predicate

targetCollection - the Collection to append to for all elements in this RichIterable that cause Predicate#accept(Object) method to evaluate to false

Returns:

targetCollection, which contains appended elements as a result of the reject criteria

See Also:

RichIterable.reject(Predicate), RichIterable.reject(Predicate, Collection)

collect

public <V,R extends java.util.Collection<V>> R collect(com.gs.collections.api.block.function.Function<? super T,? extends V> function,
                                              R target)

Description copied from interface: com.gs.collections.api.RichIterable

Same as RichIterable.collect(Function), except that the results are gathered into the specified target collection.

e.g.
 return people.collect(new Function<Person, String>()
 {
     public String valueOf(Person person)
     {
         return person.getFirstName() + " " + person.getLastName();
     }
 }, Lists.mutable.of());
 

Specified by:

collect in interface com.gs.collections.api.RichIterable<T>

Parameters:

function - a Function to use as the collect transformation function

target - the Collection to append to for all elements in this RichIterable that meet select criteria function

Returns:

target, which contains appended elements as a result of the collect transformation

See Also:

RichIterable.collect(Function)

collectWith

public <P,V,R extends java.util.Collection<V>> R collectWith(com.gs.collections.api.block.function.Function2<? super T,? super P,? extends V> function,
                                                    P parameter,
                                                    R targetCollection)

Description copied from interface: com.gs.collections.api.RichIterable

Same as collectWith but with a targetCollection parameter to gather the results.

e.g.
 Function2 addParameterFunction =
 new Function2()
 {
      public Integer value(final Integer each, final Integer parameter)
      {
          return each + parameter;
      }
 };
 FastList.newListWith(1, 2, 3).collectWith(addParameterFunction, Integer.valueOf(1), UnifiedSet.newSet());
 

Specified by:

collectWith in interface com.gs.collections.api.RichIterable<T>

Parameters:

function - a Function2 to use as the collect transformation function

parameter - a parameter to pass in for evaluation of the second argument P in function

targetCollection - the Collection to append to for all elements in this RichIterable that meet select criteria function

Returns:

targetCollection, which contains appended elements as a result of the collect transformation

collectIf

public <V,R extends java.util.Collection<V>> R collectIf(com.gs.collections.api.block.predicate.Predicate<? super T> predicate,
                                                com.gs.collections.api.block.function.Function<? super T,? extends V> function,
                                                R target)

Description copied from interface: com.gs.collections.api.RichIterable

Same as the collectIf method with two parameters but uses the specified target collection for the results.

Specified by:

collectIf in interface com.gs.collections.api.RichIterable<T>

Parameters:

predicate - a Predicate to use as the select criteria

function - a Function to use as the collect transformation function

target - the Collection to append to for all elements in this RichIterable that meet the collect criteria predicate

Returns:

targetCollection, which contains appended elements as a result of the collect criteria and transformation

See Also:

RichIterable.collectIf(Predicate, Function)

detectIfNone

public T detectIfNone(com.gs.collections.api.block.predicate.Predicate<? super T> predicate,
             com.gs.collections.api.block.function.Function0<? extends T> function)

Description copied from interface: com.gs.collections.api.RichIterable

Returns the first element of the iterable for which the predicate evaluates to true. If no element matches the predicate, then returns the value of applying the specified function.

Specified by:

detectIfNone in interface com.gs.collections.api.RichIterable<T>

min

public T min(java.util.Comparator<? super T> comparator)

Description copied from interface: com.gs.collections.api.RichIterable

Returns the minimum element out of this container based on the comparator.

Specified by:

min in interface com.gs.collections.api.RichIterable<T>

max

public T max(java.util.Comparator<? super T> comparator)

Description copied from interface: com.gs.collections.api.RichIterable

Returns the maximum element out of this container based on the comparator.

Specified by:

max in interface com.gs.collections.api.RichIterable<T>

min

public T min()

Description copied from interface: com.gs.collections.api.RichIterable

Returns the minimum element out of this container based on the natural order.

Specified by:

min in interface com.gs.collections.api.RichIterable<T>

max

public T max()

Description copied from interface: com.gs.collections.api.RichIterable

Returns the maximum element out of this container based on the natural order.

Specified by:

max in interface com.gs.collections.api.RichIterable<T>

minBy

public <V extends java.lang.Comparable<? super V>> T minBy(com.gs.collections.api.block.function.Function<? super T,? extends V> function)

Description copied from interface: com.gs.collections.api.RichIterable

Returns the minimum elements out of this container based on the natural order of the attribute returned by Function.

Specified by:

minBy in interface com.gs.collections.api.RichIterable<T>

maxBy

public <V extends java.lang.Comparable<? super V>> T maxBy(com.gs.collections.api.block.function.Function<? super T,? extends V> function)

Description copied from interface: com.gs.collections.api.RichIterable

Returns the maximum elements out of this container based on the natural order of the attribute returned by Function.

Specified by:

maxBy in interface com.gs.collections.api.RichIterable<T>

asLazy

public com.gs.collections.api.LazyIterable<T> asLazy()

Description copied from interface: com.gs.collections.api.RichIterable

Returns a deferred iterable, most likely implemented by calling LazyIterate.defer(this).

Specified by:

asLazy in interface com.gs.collections.api.RichIterable<T>

flatCollect

public <V,R extends java.util.Collection<V>> R flatCollect(com.gs.collections.api.block.function.Function<? super T,? extends java.lang.Iterable<V>> function,
                                                  R target)

Description copied from interface: com.gs.collections.api.RichIterable

Same as flatCollect, only the results are collected into the target collection.

Specified by:

flatCollect in interface com.gs.collections.api.RichIterable<T>

Parameters:

function - The Function to apply

target - The collection into which results should be added.

Returns:

target, which will contain a flattened collection of results produced by applying the given function

See Also:

RichIterable.flatCollect(Function)

detect

public T detect(com.gs.collections.api.block.predicate.Predicate<? super T> predicate)

Description copied from interface: com.gs.collections.api.RichIterable

Returns the first element of the iterable for which the predicate evaluates to true or null in the case where no element returns true. This method is commonly called find.

e.g.
 return people.detect(new Predicate<Person>()
 {
     public boolean value(Person person)
     {
         return person.getFirstName().equals("John") && person.getLastName().equals("Smith");
     }
 });
 

Specified by:

detect in interface com.gs.collections.api.RichIterable<T>

count

public int count(com.gs.collections.api.block.predicate.Predicate<? super T> predicate)

Description copied from interface: com.gs.collections.api.RichIterable

Return the total number of elements that answer true to the specified predicate.

e.g.
 return people.count(new Predicate<Person>()
 {
     public boolean value(Person person)
     {
         return person.getAddress().getState().getName().equals("New York");
     }
 });
 

Specified by:

count in interface com.gs.collections.api.RichIterable<T>

anySatisfy

public boolean anySatisfy(com.gs.collections.api.block.predicate.Predicate<? super T> predicate)

Description copied from interface: com.gs.collections.api.RichIterable

Returns true if the predicate evaluates to true for any element of the iterable. Returns false if the iterable is empty, or if no element returned true when evaluating the predicate.

Specified by:

anySatisfy in interface com.gs.collections.api.RichIterable<T>

allSatisfy

public boolean allSatisfy(com.gs.collections.api.block.predicate.Predicate<? super T> predicate)

Description copied from interface: com.gs.collections.api.RichIterable

Returns true if the predicate evaluates to true for every element of the iterable or if the iterable is empty. Otherwise, returns false.

Specified by:

allSatisfy in interface com.gs.collections.api.RichIterable<T>

noneSatisfy

public boolean noneSatisfy(com.gs.collections.api.block.predicate.Predicate<? super T> predicate)

Description copied from interface: com.gs.collections.api.RichIterable

Returns true if the predicate evaluates to false for every element of the iterable or if the iterable is empty. Otherwise, returns false.

Specified by:

noneSatisfy in interface com.gs.collections.api.RichIterable<T>

injectInto

public <IV> IV injectInto(IV injectedValue,
                 com.gs.collections.api.block.function.Function2<? super IV,? super T,? extends IV> function)

Description copied from interface: com.gs.collections.api.RichIterable

Returns the final result of evaluating function using each element of the iterable and the previous evaluation result as the parameters. The injected value is used for the first parameter of the first evaluation, and the current item in the iterable is used as the second parameter. This method is commonly called fold or sometimes reduce.

Specified by:

injectInto in interface com.gs.collections.api.RichIterable<T>

injectInto

public int injectInto(int injectedValue,
             com.gs.collections.api.block.function.primitive.IntObjectToIntFunction<? super T> function)

Description copied from interface: com.gs.collections.api.RichIterable

Returns the final int result of evaluating function using each element of the iterable and the previous evaluation result as the parameters. The injected value is used for the first parameter of the first evaluation, and the current item in the iterable is used as the second parameter.

Specified by:

injectInto in interface com.gs.collections.api.RichIterable<T>

injectInto

public long injectInto(long injectedValue,
              com.gs.collections.api.block.function.primitive.LongObjectToLongFunction<? super T> function)

Description copied from interface: com.gs.collections.api.RichIterable

Returns the final long result of evaluating function using each element of the iterable and the previous evaluation result as the parameters. The injected value is used for the first parameter of the first evaluation, and the current item in the iterable is used as the second parameter.

Specified by:

injectInto in interface com.gs.collections.api.RichIterable<T>

injectInto

public double injectInto(double injectedValue,
                com.gs.collections.api.block.function.primitive.DoubleObjectToDoubleFunction<? super T> function)

Description copied from interface: com.gs.collections.api.RichIterable

Returns the final double result of evaluating function using each element of the iterable and the previous evaluation result as the parameters. The injected value is used for the first parameter of the first evaluation, and the current item in the iterable is used as the second parameter.

Specified by:

injectInto in interface com.gs.collections.api.RichIterable<T>

injectInto

public float injectInto(float injectedValue,
               com.gs.collections.api.block.function.primitive.FloatObjectToFloatFunction<? super T> function)

Description copied from interface: com.gs.collections.api.RichIterable

Returns the final float result of evaluating function using each element of the iterable and the previous evaluation result as the parameters. The injected value is used for the first parameter of the first evaluation, and the current item in the iterable is used as the second parameter.

Specified by:

injectInto in interface com.gs.collections.api.RichIterable<T>

sumOfInt

public long sumOfInt(com.gs.collections.api.block.function.primitive.IntFunction<? super T> function)

Description copied from interface: com.gs.collections.api.RichIterable

Returns the final long result of evaluating function for each element of the iterable and adding the results together.

Specified by:

sumOfInt in interface com.gs.collections.api.RichIterable<T>

sumOfFloat

public double sumOfFloat(com.gs.collections.api.block.function.primitive.FloatFunction<? super T> function)

Description copied from interface: com.gs.collections.api.RichIterable

Returns the final double result of evaluating function for each element of the iterable and adding the results together.

Specified by:

sumOfFloat in interface com.gs.collections.api.RichIterable<T>

sumOfLong

public long sumOfLong(com.gs.collections.api.block.function.primitive.LongFunction<? super T> function)

Description copied from interface: com.gs.collections.api.RichIterable

Returns the final long result of evaluating function for each element of the iterable and adding the results together.

Specified by:

sumOfLong in interface com.gs.collections.api.RichIterable<T>

sumOfDouble

public double sumOfDouble(com.gs.collections.api.block.function.primitive.DoubleFunction<? super T> function)

Description copied from interface: com.gs.collections.api.RichIterable

Returns the final double result of evaluating function for each element of the iterable and adding the results together.

Specified by:

sumOfDouble in interface com.gs.collections.api.RichIterable<T>

forEachWithIndex

public void forEachWithIndex(com.gs.collections.api.block.procedure.primitive.ObjectIntProcedure<? super T> objectIntProcedure)

Description copied from interface: com.gs.collections.api.InternalIterable

Iterates over the iterable passing each element and the current relative int index to the specified instance of ObjectIntProcedure

e.g.
 people.forEachWithIndex(new ObjectIntProcedure()
 {
     public void value(Person person, int index)
     {
         LOGGER.info("Index: " + index + " person: " + person.getName());
     }
 });
 

Specified by:

forEachWithIndex in interface com.gs.collections.api.InternalIterable<T>

forEachWith

public <P> void forEachWith(com.gs.collections.api.block.procedure.Procedure2<? super T,? super P> procedure,
                   P parameter)

Description copied from interface: com.gs.collections.api.InternalIterable

The procedure2 is evaluated for each element in the iterable with the specified parameter provided as the second argument.

e.g.
 people.forEachWith(new Procedure2()
 {
     public void value(Person person, Person other)
     {
         if (person.isRelatedTo(other))
         {
              LOGGER.info(person.getName());
         }
     }
 }, fred);
 

Specified by:

forEachWith in interface com.gs.collections.api.InternalIterable<T>

zip

public <S,R extends java.util.Collection<com.gs.collections.api.tuple.Pair<T,S>>> R zip(java.lang.Iterable<S> that,
                                                                               R target)

Description copied from interface: com.gs.collections.api.RichIterable

Same as RichIterable.zip(Iterable) but uses target for output.

Specified by:

zip in interface com.gs.collections.api.RichIterable<T>

zipWithIndex

public <R extends java.util.Collection<com.gs.collections.api.tuple.Pair<T,java.lang.Integer>>> R zipWithIndex(R target)

Description copied from interface: com.gs.collections.api.RichIterable

Same as RichIterable.zipWithIndex() but uses target for output.

Specified by:

zipWithIndex in interface com.gs.collections.api.RichIterable<T>

toString

public java.lang.String toString()

Returns a string representation of this collection. The string representation consists of a list of the collection's elements in the order they are returned by its iterator, enclosed in square brackets ("[]"). Adjacent elements are separated by the characters ", " (comma and space). Elements are converted to strings as by String.valueOf(Object).

This implementation creates an empty string buffer, appends a left square bracket, and iterates over the collection appending the string representation of each element in turn. After appending each element except the last, the string ", " is appended. Finally a right bracket is appended. A string is obtained from the string buffer, and returned.

Specified by:

toString in interface com.gs.collections.api.RichIterable<T>

Overrides:

toString in class java.lang.Object

Returns:

a string representation of this collection.

makeString

public java.lang.String makeString()

Description copied from interface: com.gs.collections.api.RichIterable

Returns a string representation of this collection by delegating to RichIterable.makeString(String) and defaulting the separator parameter to the characters ", " (comma and space).

Specified by:

makeString in interface com.gs.collections.api.RichIterable<T>

Returns:

a string representation of this collection.

makeString

public java.lang.String makeString(java.lang.String separator)

Description copied from interface: com.gs.collections.api.RichIterable

Returns a string representation of this collection by delegating to RichIterable.makeString(String, String, String) and defaulting the start and end parameters to "" (the empty String).

Specified by:

makeString in interface com.gs.collections.api.RichIterable<T>

Returns:

a string representation of this collection.

makeString

public java.lang.String makeString(java.lang.String start,
                          java.lang.String separator,
                          java.lang.String end)

Description copied from interface: com.gs.collections.api.RichIterable

Returns a string representation of this collection. The string representation consists of a list of the collection's elements in the order they are returned by its iterator, enclosed in the start and end strings. Adjacent elements are separated by the separator string. Elements are converted to strings as by String.valueOf(Object).

Specified by:

makeString in interface com.gs.collections.api.RichIterable<T>

Returns:

a string representation of this collection.

appendString

public void appendString(java.lang.Appendable appendable)

Description copied from interface: com.gs.collections.api.RichIterable

Prints a string representation of this collection onto the given Appendable. Prints the string returned by RichIterable.makeString().

Specified by:

appendString in interface com.gs.collections.api.RichIterable<T>

appendString

public void appendString(java.lang.Appendable appendable,
                java.lang.String separator)

Description copied from interface: com.gs.collections.api.RichIterable

Prints a string representation of this collection onto the given Appendable. Prints the string returned by RichIterable.makeString(String).

Specified by:

appendString in interface com.gs.collections.api.RichIterable<T>

appendString

public void appendString(java.lang.Appendable appendable,
                java.lang.String start,
                java.lang.String separator,
                java.lang.String end)

Description copied from interface: com.gs.collections.api.RichIterable

Prints a string representation of this collection onto the given Appendable. Prints the string returned by RichIterable.makeString(String, String, String).

Specified by:

appendString in interface com.gs.collections.api.RichIterable<T>

add

public boolean add(T t)

Specified by:

add in interface java.util.Collection<T>

remove

public boolean remove(java.lang.Object o)

Specified by:

remove in interface java.util.Collection<T>

containsAll

public boolean containsAll(java.util.Collection<?> collection)

Specified by:

containsAll in interface com.gs.collections.api.RichIterable<T>

Specified by:

containsAll in interface java.util.Collection<T>

See Also:

Collection.containsAll(Collection)

addAll

public boolean addAll(java.util.Collection<? extends T> collection)

Specified by:

addAll in interface java.util.Collection<T>

removeAll

public boolean removeAll(java.util.Collection<?> collection)

Specified by:

removeAll in interface java.util.Collection<T>

retainAll

public boolean retainAll(java.util.Collection<?> collection)

Specified by:

retainAll in interface java.util.Collection<T>

clear

public void clear()

Specified by:

clear in interface java.util.Collection<T>

chunk

public com.gs.collections.api.RichIterable<com.gs.collections.api.RichIterable<T>> chunk(int size)

Description copied from interface: com.gs.collections.api.RichIterable

Partitions elements in fixed size chunks.

Specified by:

chunk in interface com.gs.collections.api.RichIterable<T>

Parameters:

size - the number of elements per chunk

Returns:

A RichIterable containing RichIterables of size size, except the last will be truncated if the elements don't divide evenly.

newMutable

protected abstract com.gs.collections.api.collection.MutableCollection<T> newMutable(int size)

collectBoolean

public com.gs.collections.api.collection.primitive.ImmutableBooleanCollection collectBoolean(com.gs.collections.api.block.function.primitive.BooleanFunction<? super T> booleanFunction)

Description copied from interface: com.gs.collections.api.RichIterable

Returns a new primitive boolean iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.

e.g.
 return people.collectBoolean(new BooleanFunction<Person>()
 {
     public boolean booleanValueOf(Person person)
     {
         return person.hasDrivingLicense();
     }
 });
 

Specified by:

collectBoolean in interface com.gs.collections.api.collection.ImmutableCollection<T>

Specified by:

collectBoolean in interface com.gs.collections.api.RichIterable<T>

collectByte

public com.gs.collections.api.collection.primitive.ImmutableByteCollection collectByte(com.gs.collections.api.block.function.primitive.ByteFunction<? super T> byteFunction)

Description copied from interface: com.gs.collections.api.RichIterable

Returns a new primitive byte iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.

e.g.
 return people.collectByte(new ByteFunction<Person>()
 {
     public byte byteValueOf(Person person)
     {
         return person.getCode();
     }
 });
 

Specified by:

collectByte in interface com.gs.collections.api.collection.ImmutableCollection<T>

Specified by:

collectByte in interface com.gs.collections.api.RichIterable<T>

collectChar

public com.gs.collections.api.collection.primitive.ImmutableCharCollection collectChar(com.gs.collections.api.block.function.primitive.CharFunction<? super T> charFunction)

Description copied from interface: com.gs.collections.api.RichIterable

Returns a new primitive char iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.

e.g.
 return people.collectChar(new CharFunction<Person>()
 {
     public char charValueOf(Person person)
     {
         return person.getMiddleInitial();
     }
 });
 

Specified by:

collectChar in interface com.gs.collections.api.collection.ImmutableCollection<T>

Specified by:

collectChar in interface com.gs.collections.api.RichIterable<T>

collectDouble

public com.gs.collections.api.collection.primitive.ImmutableDoubleCollection collectDouble(com.gs.collections.api.block.function.primitive.DoubleFunction<? super T> doubleFunction)

Description copied from interface: com.gs.collections.api.RichIterable

Returns a new primitive double iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.

e.g.
 return people.collectDouble(new DoubleFunction<Person>()
 {
     public double doubleValueOf(Person person)
     {
         return person.getMilesFromNorthPole();
     }
 });
 

Specified by:

collectDouble in interface com.gs.collections.api.collection.ImmutableCollection<T>

Specified by:

collectDouble in interface com.gs.collections.api.RichIterable<T>

collectFloat

public com.gs.collections.api.collection.primitive.ImmutableFloatCollection collectFloat(com.gs.collections.api.block.function.primitive.FloatFunction<? super T> floatFunction)

Description copied from interface: com.gs.collections.api.RichIterable

Returns a new primitive float iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.

e.g.
 return people.collectFloat(new FloatFunction<Person>()
 {
     public float floatValueOf(Person person)
     {
         return person.getHeightInInches();
     }
 });
 

Specified by:

collectFloat in interface com.gs.collections.api.collection.ImmutableCollection<T>

Specified by:

collectFloat in interface com.gs.collections.api.RichIterable<T>

collectInt

public com.gs.collections.api.collection.primitive.ImmutableIntCollection collectInt(com.gs.collections.api.block.function.primitive.IntFunction<? super T> intFunction)

Description copied from interface: com.gs.collections.api.RichIterable

Returns a new primitive int iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.

e.g.
 return people.collectInt(new IntFunction<Person>()
 {
     public int intValueOf(Person person)
     {
         return person.getAge();
     }
 });
 

Specified by:

collectInt in interface com.gs.collections.api.collection.ImmutableCollection<T>

Specified by:

collectInt in interface com.gs.collections.api.RichIterable<T>

collectLong

public com.gs.collections.api.collection.primitive.ImmutableLongCollection collectLong(com.gs.collections.api.block.function.primitive.LongFunction<? super T> longFunction)

Description copied from interface: com.gs.collections.api.RichIterable

Returns a new primitive long iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.

e.g.
 return people.collectLong(new LongFunction<Person>()
 {
     public long longValueOf(Person person)
     {
         return person.getGuid();
     }
 });
 

Specified by:

collectLong in interface com.gs.collections.api.collection.ImmutableCollection<T>

Specified by:

collectLong in interface com.gs.collections.api.RichIterable<T>

collectShort

public com.gs.collections.api.collection.primitive.ImmutableShortCollection collectShort(com.gs.collections.api.block.function.primitive.ShortFunction<? super T> shortFunction)

Description copied from interface: com.gs.collections.api.RichIterable

Returns a new primitive short iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.

e.g.
 return people.collectShort(new ShortFunction<Person>()
 {
     public short shortValueOf(Person person)
     {
         return person.getNumberOfJunkMailItemsReceivedPerMonth();
     }
 });
 

Specified by:

collectShort in interface com.gs.collections.api.collection.ImmutableCollection<T>

Specified by:

collectShort in interface com.gs.collections.api.RichIterable<T>

aggregateInPlaceBy

public <K,V> com.gs.collections.api.map.ImmutableMap<K,V> aggregateInPlaceBy(com.gs.collections.api.block.function.Function<? super T,? extends K> groupBy,
                                                                    com.gs.collections.api.block.function.Function0<? extends V> zeroValueFactory,
                                                                    com.gs.collections.api.block.procedure.Procedure2<? super V,? super T> mutatingAggregator)

Description copied from interface: com.gs.collections.api.RichIterable

Applies an aggregate procedure over the iterable grouping results into a Map based on the specific groupBy function. Aggregate results are required to be mutable as they will be changed in place by the procedure. A second function specifies the initial "zero" aggregate value to work with (i.e. new AtomicInteger(0)).

Specified by:

aggregateInPlaceBy in interface com.gs.collections.api.collection.ImmutableCollection<T>

Specified by:

aggregateInPlaceBy in interface com.gs.collections.api.RichIterable<T>

aggregateBy

public <K,V> com.gs.collections.api.map.ImmutableMap<K,V> aggregateBy(com.gs.collections.api.block.function.Function<? super T,? extends K> groupBy,
                                                             com.gs.collections.api.block.function.Function0<? extends V> zeroValueFactory,
                                                             com.gs.collections.api.block.function.Function2<? super V,? super T,? extends V> nonMutatingAggregator)

Description copied from interface: com.gs.collections.api.RichIterable

Applies an aggregate function over the iterable grouping results into a map based on the specific groupBy function. Aggregate results are allowed to be immutable as they will be replaced in place in the map. A second function specifies the initial "zero" aggregate value to work with (i.e. new Integer(0)).

Specified by:

aggregateBy in interface com.gs.collections.api.collection.ImmutableCollection<T>

Specified by:

aggregateBy in interface com.gs.collections.api.RichIterable<T>