Class AbstractCollectionAdapter<T>
- All Implemented Interfaces:
Iterable<T>
,Collection<T>
,MutableCollection<T>
,InternalIterable<T>
,RichIterable<T>
- Direct Known Subclasses:
AbstractListAdapter
,CollectionAdapter
,SetAdapter
,SortedSetAdapter
public abstract class AbstractCollectionAdapter<T> extends Object implements MutableCollection<T>
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Constructor Summary
Constructors Constructor Description AbstractCollectionAdapter()
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Method Summary
Modifier and Type Method Description boolean
add(T o)
boolean
addAll(Collection<? extends T> collection)
boolean
addAllIterable(Iterable<? extends T> iterable)
<K, V> MutableMap<K,V>
aggregateInPlaceBy(Function<? super T,? extends K> groupBy, Function0<? extends V> zeroValueFactory, 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(Predicate<? super T> predicate)
Returns true if the predicate evaluates to true for every element of the iterable or if the iterable is empty.<P> boolean
allSatisfyWith(Predicate2<? super T,? super P> predicate, P parameter)
Returns true if the predicate evaluates to true for every element of the collection, or returns false.boolean
anySatisfy(Predicate<? super T> predicate)
Returns true if the predicate evaluates to true for any element of the iterable.<P> boolean
anySatisfyWith(Predicate2<? super T,? super P> predicate, P parameter)
Returns true if the predicate evaluates to true for any element of the collection, or return false.void
appendString(Appendable appendable, String start, String separator, String end)
Prints a string representation of this collection onto the givenAppendable
.LazyIterable<T>
asLazy()
Returns a lazy (deferred) iterable, most likely implemented by calling LazyIterate.adapt(this).RichIterable<RichIterable<T>>
chunk(int size)
Partitions elements in fixed size chunks.void
clear()
<V> MutableCollection<V>
collect(Function<? super T,? extends V> function)
Returns a new MutableCollection with the results of applying the specified function to each element of the source collection.<V, R extends Collection<V>>
Rcollect(Function<? super T,? extends V> function, R target)
Same asRichIterable.collect(Function)
, except that the results are gathered into the specifiedtarget
collection.MutableBooleanCollection
collectBoolean(BooleanFunction<? super T> booleanFunction)
Returns a new primitiveboolean
iterable with the results of applying the specified function on each element of the source collection.<R extends MutableBooleanCollection>
RcollectBoolean(BooleanFunction<? super T> booleanFunction, R target)
Same asRichIterable.collectBoolean(BooleanFunction)
, except that the results are gathered into the specifiedtarget
collection.MutableByteCollection
collectByte(ByteFunction<? super T> byteFunction)
Returns a new primitivebyte
iterable with the results of applying the specified function on each element of the source collection.<R extends MutableByteCollection>
RcollectByte(ByteFunction<? super T> byteFunction, R target)
Same asRichIterable.collectByte(ByteFunction)
, except that the results are gathered into the specifiedtarget
collection.MutableCharCollection
collectChar(CharFunction<? super T> charFunction)
Returns a new primitivechar
iterable with the results of applying the specified function on each element of the source collection.<R extends MutableCharCollection>
RcollectChar(CharFunction<? super T> charFunction, R target)
Same asRichIterable.collectChar(CharFunction)
, except that the results are gathered into the specifiedtarget
collection.MutableDoubleCollection
collectDouble(DoubleFunction<? super T> doubleFunction)
Returns a new primitivedouble
iterable with the results of applying the specified function on each element of the source collection.<R extends MutableDoubleCollection>
RcollectDouble(DoubleFunction<? super T> doubleFunction, R target)
Same asRichIterable.collectDouble(DoubleFunction)
, except that the results are gathered into the specifiedtarget
collection.MutableFloatCollection
collectFloat(FloatFunction<? super T> floatFunction)
Returns a new primitivefloat
iterable with the results of applying the specified function on each element of the source collection.<R extends MutableFloatCollection>
RcollectFloat(FloatFunction<? super T> floatFunction, R target)
Same asRichIterable.collectFloat(FloatFunction)
, except that the results are gathered into the specifiedtarget
collection.<V> MutableCollection<V>
collectIf(Predicate<? super T> predicate, Function<? super T,? extends V> function)
Returns a new MutableCollection with the results of applying the specified function to each element of the source collection, but only for elements that evaluate to true for the specified predicate.<V, R extends Collection<V>>
RcollectIf(Predicate<? super T> predicate, 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.MutableIntCollection
collectInt(IntFunction<? super T> intFunction)
Returns a new primitiveint
iterable with the results of applying the specified function on each element of the source collection.<R extends MutableIntCollection>
RcollectInt(IntFunction<? super T> intFunction, R target)
Same asRichIterable.collectInt(IntFunction)
, except that the results are gathered into the specifiedtarget
collection.MutableLongCollection
collectLong(LongFunction<? super T> longFunction)
Returns a new primitivelong
iterable with the results of applying the specified function on each element of the source collection.<R extends MutableLongCollection>
RcollectLong(LongFunction<? super T> longFunction, R target)
Same asRichIterable.collectLong(LongFunction)
, except that the results are gathered into the specifiedtarget
collection.MutableShortCollection
collectShort(ShortFunction<? super T> shortFunction)
Returns a new primitiveshort
iterable with the results of applying the specified function on each element of the source collection.<R extends MutableShortCollection>
RcollectShort(ShortFunction<? super T> shortFunction, R target)
Same asRichIterable.collectShort(ShortFunction)
, except that the results are gathered into the specifiedtarget
collection.<P, A, R extends Collection<A>>
RcollectWith(Function2<? super T,? super P,? extends A> function, P parameter, R targetCollection)
Same as collectWith but with a targetCollection parameter to gather the results.<P, V> MutableCollection<V>
collectWith(Function2<? super T,? super P,? extends V> function, P parameter)
Same asRichIterable.collect(Function)
with aFunction2
and specified parameter which is passed to the block.boolean
contains(Object o)
Returns true if the iterable has an element which responds true to element.equals(object).boolean
containsAll(Collection<?> collection)
Returns true if all elements in source are contained in this collection.boolean
containsAllArguments(Object... elements)
Returns true if all elements in the specified var arg array are contained in this collection.boolean
containsAllIterable(Iterable<?> source)
Returns true if all elements in source are contained in this collection.int
count(Predicate<? super T> predicate)
Return the total number of elements that answer true to the specified predicate.<P> int
countWith(Predicate2<? super T,? super P> predicate, P parameter)
Returns the total number of elements that evaluate to true for the specified predicate.T
detect(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(Predicate<? super T> predicate, Function0<? extends T> function)
Returns the first element of the iterable for which the predicate evaluates to true.Optional<T>
detectOptional(Predicate<? super T> predicate)
Returns the first element of the iterable for which the predicate evaluates to true as an Optional.<P> T
detectWith(Predicate2<? super T,? super P> predicate, P parameter)
Returns the first element that evaluates to true for the specified predicate2 and parameter, or null if none evaluate to true.<P> T
detectWithIfNone(Predicate2<? super T,? super P> predicate, P parameter, Function0<? extends T> function)
Returns the first element of the iterable that evaluates to true for the specified predicate2 and parameter, or returns the value of evaluating the specified function.<P> Optional<T>
detectWithOptional(Predicate2<? super T,? super P> predicate, P parameter)
Returns the first element that evaluates to true for the specified predicate2 and parameter as an Optional.void
each(Procedure<? super T> procedure)
The procedure is executed for each element in the iterable.<V> MutableCollection<V>
flatCollect(Function<? super T,? extends Iterable<V>> function)
flatCollect
is a special case ofRichIterable.collect(Function)
.<V, R extends Collection<V>>
RflatCollect(Function<? super T,? extends Iterable<V>> function, R target)
Same as flatCollect, only the results are collected into the target collection.<P> void
forEachWith(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(ObjectIntProcedure<? super T> objectIntProcedure)
Iterates over the iterable passing each element and the current relative int index to the specified instance of ObjectIntProcedure.T
getFirst()
Returns the first element of an iterable.T
getLast()
Returns the last element of an iterable.T
getOnly()
Returns the element if the iterable has exactly one element.<V> MutableMultimap<V,T>
groupBy(Function<? super T,? extends V> function)
For each element of the iterable, the function is evaluated and the results of these evaluations are collected into a new multimap, where the transformed value is the key and the original values are added to the same (or similar) species of collection as the source iterable.<V, R extends MutableMultimap<V, T>>
RgroupBy(Function<? super T,? extends V> function, R target)
Same asRichIterable.groupBy(Function)
, except that the results are gathered into the specifiedtarget
multimap.<V> MutableMultimap<V,T>
groupByEach(Function<? super T,? extends Iterable<V>> function)
Similar toRichIterable.groupBy(Function)
, except the result of evaluating function will return a collection of keys for each value.<V, R extends MutableMultimap<V, T>>
RgroupByEach(Function<? super T,? extends Iterable<V>> function, R target)
Same asRichIterable.groupByEach(Function)
, except that the results are gathered into the specifiedtarget
multimap.<V> MutableMap<V,T>
groupByUniqueKey(Function<? super T,? extends V> function)
For each element of the iterable, the function is evaluated and he results of these evaluations are collected into a new map, where the transformed value is the key.<V, R extends MutableMapIterable<V, T>>
RgroupByUniqueKey(Function<? super T,? extends V> function, R target)
Same asRichIterable.groupByUniqueKey(Function)
, except that the results are gathered into the specifiedtarget
map.double
injectInto(double injectedValue, 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, 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, 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.long
injectInto(long injectedValue, 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.<IV> IV
injectInto(IV injectedValue, 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.<IV, P> IV
injectIntoWith(IV injectValue, Function3<? super IV,? super T,? super P,? extends IV> function, P parameter)
Returns the final result of evaluating function using each element of the iterable, the previous evaluation result and the parameters.<R extends Collection<T>>
Rinto(R target)
Adds all the elements in this iterable to the specific target Collection.boolean
isEmpty()
Returns true if this iterable has zero items.Iterator<T>
iterator()
T
max()
Returns the maximum element out of this container based on the natural order.T
max(Comparator<? super T> comparator)
Returns the maximum element out of this container based on the comparator.<V extends Comparable<? super V>>
TmaxBy(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(Comparator<? super T> comparator)
Returns the minimum element out of this container based on the comparator.<V extends Comparable<? super V>>
TminBy(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.boolean
noneSatisfy(Predicate<? super T> predicate)
Returns true if the predicate evaluates to false for every element of the iterable or if the iterable is empty.<P> boolean
noneSatisfyWith(Predicate2<? super T,? super P> predicate, P parameter)
Returns true if the predicate evaluates to false for every element of the collection, or return false.boolean
notEmpty()
The English equivalent of !this.isEmpty()PartitionMutableCollection<T>
partition(Predicate<? super T> predicate)
Filters a collection into a PartitionedIterable based on the evaluation of the predicate.<P> PartitionMutableCollection<T>
partitionWith(Predicate2<? super T,? super P> predicate, P parameter)
Filters a collection into a PartitionIterable based on the evaluation of the predicate.MutableCollection<T>
reject(Predicate<? super T> predicate)
Returns a MutableCollection with all elements that evaluate to false for the specified predicate.<R extends Collection<T>>
Rreject(Predicate<? super T> predicate, R target)
Same as the reject method with one parameter but uses the specified target collection for the results.<P> MutableCollection<T>
rejectWith(Predicate2<? super T,? super P> predicate, P parameter)
Returns a MutableCollection with all elements that evaluate to false for the specified predicate2 and parameter.<P, R extends Collection<T>>
RrejectWith(Predicate2<? super T,? super P> predicate, P parameter, R targetCollection)
Similar toRichIterable.reject(Predicate, Collection)
, except with an evaluation parameter for the second generic argument inPredicate2
.boolean
remove(Object o)
boolean
removeAll(Collection<?> collection)
boolean
removeAllIterable(Iterable<?> iterable)
boolean
removeIf(Predicate<? super T> predicate)
Removes all elements in the collection that evaluate to true for the specified predicate.<P> boolean
removeIfWith(Predicate2<? super T,? super P> predicate, P parameter)
Removes all elements in the collection that evaluate to true for the specified predicate2 and parameter.boolean
retainAll(Collection<?> collection)
boolean
retainAllIterable(Iterable<?> iterable)
MutableCollection<T>
select(Predicate<? super T> predicate)
Returns a MutableCollection with all elements that evaluate to true for the specified predicate.<R extends Collection<T>>
Rselect(Predicate<? super T> predicate, R target)
Same as the select method with one parameter but uses the specified target collection for the results.<P> Twin<MutableList<T>>
selectAndRejectWith(Predicate2<? super T,? super P> predicate, P parameter)
Filters a collection into two separate collections based on a predicate returned via a Pair.<S> MutableCollection<S>
selectInstancesOf(Class<S> clazz)
Returns all elements of the source collection that are instances of the Classclazz
.<P> MutableCollection<T>
selectWith(Predicate2<? super T,? super P> predicate, P parameter)
Returns a MutableCollection with all elements that evaluate to true for the specified predicate2 and parameter.<P, R extends Collection<T>>
RselectWith(Predicate2<? super T,? super P> predicate, P parameter, R targetCollection)
Similar toRichIterable.select(Predicate, Collection)
, except with an evaluation parameter for the second generic argument inPredicate2
.int
size()
Returns the number of items in this iterable.<V> MutableObjectDoubleMap<V>
sumByDouble(Function<? super T,? extends V> groupBy, DoubleFunction<? super T> function)
Groups and sums the values using the two specified functions.<V> MutableObjectDoubleMap<V>
sumByFloat(Function<? super T,? extends V> groupBy, FloatFunction<? super T> function)
Groups and sums the values using the two specified functions.<V> MutableObjectLongMap<V>
sumByInt(Function<? super T,? extends V> groupBy, IntFunction<? super T> function)
Groups and sums the values using the two specified functions.<V> MutableObjectLongMap<V>
sumByLong(Function<? super T,? extends V> groupBy, LongFunction<? super T> function)
Groups and sums the values using the two specified functions.double
sumOfDouble(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(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(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(LongFunction<? super T> function)
Returns the final long result of evaluating function for each element of the iterable and adding the results together.MutableCollection<T>
tap(Procedure<? super T> procedure)
Executes the Procedure for each element in the iterable and returnsthis
.Object[]
toArray()
Converts this iterable to an array.<E> E[]
toArray(E[] a)
Converts this iterable to an array using the specified target array, assuming the target array is as long or longer than the iterable.MutableBag<T>
toBag()
Converts the collection to the default MutableBag implementation.<K, V> MutableBiMap<K,V>
toBiMap(Function<? super T,? extends K> keyFunction, Function<? super T,? extends V> valueFunction)
Converts the collection to a BiMap implementation using the specified key and value functions.MutableList<T>
toList()
Converts the collection to a MutableList implementation.<K, V> MutableMap<K,V>
toMap(Function<? super T,? extends K> keyFunction, Function<? super T,? extends V> valueFunction)
Converts the collection to a MutableMap implementation using the specified key and value functions.<K, V, R extends Map<K, V>>
RtoMap(Function<? super T,? extends K> keyFunction, Function<? super T,? extends V> valueFunction, R target)
Same asRichIterable.toMap(Function, Function)
, except that the results are gathered into the specifiedtarget
map.MutableSet<T>
toSet()
Converts the collection to a MutableSet implementation.MutableSortedBag<T>
toSortedBag()
Converts the collection to a MutableSortedBag implementation and sorts it using the natural order of the elements.MutableSortedBag<T>
toSortedBag(Comparator<? super T> comparator)
Converts the collection to the MutableSortedBag implementation and sorts it using the specified comparator.<V extends Comparable<? super V>>
MutableSortedBag<T>toSortedBagBy(Function<? super T,? extends V> function)
Converts the collection to a MutableSortedBag implementation and sorts it based on the natural order of the attribute returned byfunction
.MutableList<T>
toSortedList(Comparator<? super T> comparator)
Converts the collection to a MutableList implementation and sorts it using the specified comparator.<V extends Comparable<? super V>>
MutableList<T>toSortedListBy(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 byfunction
.<K, V> MutableSortedMap<K,V>
toSortedMap(Comparator<? super K> comparator, Function<? super T,? extends K> keyFunction, 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> MutableSortedMap<K,V>
toSortedMap(Function<? super T,? extends K> keyFunction, 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.<KK extends Comparable<? super KK>, K, V>
MutableSortedMap<K,V>toSortedMapBy(Function<? super K,KK> sortBy, Function<? super T,? extends K> keyFunction, Function<? super T,? extends V> valueFunction)
Converts the collection to a MutableSortedMap implementation using the specified key and value functions and sorts it based on the natural order of the attribute returned bysortBy
function.MutableSortedSet<T>
toSortedSet()
Converts the collection to a MutableSortedSet implementation and sorts it using the natural order of the elements.MutableSortedSet<T>
toSortedSet(Comparator<? super T> comparator)
Converts the collection to a MutableSortedSet implementation and sorts it using the specified comparator.<V extends Comparable<? super V>>
MutableSortedSet<T>toSortedSetBy(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 byfunction
.String
toString()
Returns a string with the elements of this iterable separated by commas with spaces and enclosed in square brackets.<S> MutableCollection<Pair<T,S>>
zip(Iterable<S> that)
Returns aRichIterable
formed from thisRichIterable
and anotherRichIterable
by combining corresponding elements in pairs.<S, R extends Collection<Pair<T, S>>>
Rzip(Iterable<S> that, R target)
Same asRichIterable.zip(Iterable)
but usestarget
for output.MutableCollection<Pair<T,Integer>>
zipWithIndex()
Zips thisRichIterable
with its indices.<R extends Collection<Pair<T, Integer>>>
RzipWithIndex(R target)
Same asRichIterable.zipWithIndex()
but usestarget
for output.Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait
Methods inherited from interface java.util.Collection
equals, hashCode, parallelStream, removeIf, spliterator, stream, toArray
Methods inherited from interface org.eclipse.collections.api.collection.MutableCollection
aggregateBy, asSynchronized, asUnmodifiable, countBy, countByEach, countByWith, flatCollectWith, newEmpty, toImmutable, with, withAll, without, withoutAll
Methods inherited from interface org.eclipse.collections.api.RichIterable
aggregateBy, appendString, appendString, containsBy, countBy, countByEach, countByWith, flatCollectBoolean, flatCollectByte, flatCollectChar, flatCollectDouble, flatCollectFloat, flatCollectInt, flatCollectLong, flatCollectShort, flatCollectWith, forEach, getAny, groupByAndCollect, makeString, makeString, makeString, maxByOptional, maxOptional, maxOptional, minByOptional, minOptional, minOptional, reduce, reduceInPlace, reduceInPlace, summarizeDouble, summarizeFloat, summarizeInt, summarizeLong, toSortedList
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Constructor Details
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AbstractCollectionAdapter
public AbstractCollectionAdapter()
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Method Details
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notEmpty
public boolean notEmpty()Description copied from interface:RichIterable
The English equivalent of !this.isEmpty()- Specified by:
notEmpty
in interfaceRichIterable<T>
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getFirst
Description copied from interface:RichIterable
Returns the first element of an iterable. In the case of a List it is the element at the first index. In the case of any other Collection, it is the first element that would be returned during an iteration. If the iterable is empty, null is returned. If null is a valid element of the container, then a developer would need to check to see if the iterable is empty to validate that a null result was not due to the container being empty.The order of Sets are not guaranteed (except for TreeSets and other Ordered Set implementations), so if you use this method, the first element could be any element from the Set.
- Specified by:
getFirst
in interfaceRichIterable<T>
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getLast
Description copied from interface:RichIterable
Returns the last element of an iterable. In the case of a List it is the element at the last index. In the case of any other Collection, it is the last element that would be returned during an iteration. If the iterable is empty, null is returned. If null is a valid element of the container, then a developer would need to check to see if the iterable is empty to validate that a null result was not due to the container being empty.The order of Sets are not guaranteed (except for TreeSets and other Ordered Set implementations), so if you use this method, the last element could be any element from the Set.
- Specified by:
getLast
in interfaceRichIterable<T>
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getOnly
Description copied from interface:RichIterable
Returns the element if the iterable has exactly one element. Otherwise, throwIllegalStateException
.- Specified by:
getOnly
in interfaceRichIterable<T>
- Returns:
- an element of an iterable.
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tap
Description copied from interface:RichIterable
Executes the Procedure for each element in the iterable and returnsthis
.Example using a Java 8 lambda expression:
RichIterable<Person> tapped = people.tap(person -> LOGGER.info(person.getName()));
Example using an anonymous inner class:
RichIterable<Person> tapped = people.tap(new Procedure<Person>() { public void value(Person person) { LOGGER.info(person.getName()); } });
- Specified by:
tap
in interfaceMutableCollection<T>
- Specified by:
tap
in interfaceRichIterable<T>
- See Also:
RichIterable.each(Procedure)
,RichIterable.forEach(Procedure)
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each
Description copied from interface:RichIterable
The procedure is executed for each element in the iterable.Example using a Java 8 lambda expression:
people.each(person -> LOGGER.info(person.getName()));
Example using an anonymous inner class:
people.each(new Procedure<Person>() { public void value(Person person) { LOGGER.info(person.getName()); } });
This method is a variant ofInternalIterable.forEach(Procedure)
that has a signature conflict withIterable.forEach(java.util.function.Consumer)
.- Specified by:
each
in interfaceRichIterable<T>
- See Also:
InternalIterable.forEach(Procedure)
,Iterable.forEach(java.util.function.Consumer)
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forEachWithIndex
Description copied from interface:InternalIterable
Iterates over the iterable passing each element and the current relative int index to the specified instance of ObjectIntProcedure.Example using a Java 8 lambda:
people.forEachWithIndex((Person person, int index) -> LOGGER.info("Index: " + index + " person: " + person.getName()));
Example using an anonymous inner class:
people.forEachWithIndex(new ObjectIntProcedure<Person>() { public void value(Person person, int index) { LOGGER.info("Index: " + index + " person: " + person.getName()); } });
- Specified by:
forEachWithIndex
in interfaceInternalIterable<T>
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removeIf
Description copied from interface:MutableCollection
Removes all elements in the collection that evaluate to true for the specified predicate.e.g. return lastNames.removeIf(Predicates.isNull());
- Specified by:
removeIf
in interfaceMutableCollection<T>
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removeIfWith
Description copied from interface:MutableCollection
Removes all elements in the collection that evaluate to true for the specified predicate2 and parameter.return lastNames.removeIfWith(Predicates2.isNull(), null);
- Specified by:
removeIfWith
in interfaceMutableCollection<T>
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detect
Description copied from interface: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.Example using a Java 8 lambda expression:
Person person = people.detect(person -> person.getFirstName().equals("John") && person.getLastName().equals("Smith"));
Example using an anonymous inner class:
Person person = people.detect(new Predicate<Person>() { public boolean accept(Person person) { return person.getFirstName().equals("John") && person.getLastName().equals("Smith"); } });
- Specified by:
detect
in interfaceRichIterable<T>
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detectWith
Description copied from interface:RichIterable
Returns the first element that evaluates to true for the specified predicate2 and parameter, or null if none evaluate to true.Example using a Java 8 lambda expression:
Person person = people.detectWith((person, fullName) -> person.getFullName().equals(fullName), "John Smith");
Example using an anonymous inner class:
Person person = people.detectWith(new Predicate2<Person, String>() { public boolean accept(Person person, String fullName) { return person.getFullName().equals(fullName); } }, "John Smith");
- Specified by:
detectWith
in interfaceRichIterable<T>
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detectOptional
Description copied from interface:RichIterable
Returns the first element of the iterable for which the predicate evaluates to true as an Optional. This method is commonly called find.Example using a Java 8 lambda expression:
Person person = people.detectOptional(person -> person.getFirstName().equals("John") && person.getLastName().equals("Smith"));
- Specified by:
detectOptional
in interfaceRichIterable<T>
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detectWithOptional
Description copied from interface:RichIterable
Returns the first element that evaluates to true for the specified predicate2 and parameter as an Optional.Example using a Java 8 lambda expression:
Optional<Person> person = people.detectWithOptional((person, fullName) -> person.getFullName().equals(fullName), "John Smith");
- Specified by:
detectWithOptional
in interfaceRichIterable<T>
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detectIfNone
Description copied from interface: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 interfaceRichIterable<T>
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detectWithIfNone
public <P> T detectWithIfNone(Predicate2<? super T,? super P> predicate, P parameter, Function0<? extends T> function)Description copied from interface:RichIterable
Returns the first element of the iterable that evaluates to true for the specified predicate2 and parameter, or returns the value of evaluating the specified function.- Specified by:
detectWithIfNone
in interfaceRichIterable<T>
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min
Description copied from interface:RichIterable
Returns the minimum element out of this container based on the comparator.- Specified by:
min
in interfaceRichIterable<T>
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max
Description copied from interface:RichIterable
Returns the maximum element out of this container based on the comparator.- Specified by:
max
in interfaceRichIterable<T>
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min
Description copied from interface:RichIterable
Returns the minimum element out of this container based on the natural order.- Specified by:
min
in interfaceRichIterable<T>
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max
Description copied from interface:RichIterable
Returns the maximum element out of this container based on the natural order.- Specified by:
max
in interfaceRichIterable<T>
-
minBy
Description copied from interface:RichIterable
Returns the minimum elements out of this container based on the natural order of the attribute returned by Function.- Specified by:
minBy
in interfaceRichIterable<T>
-
maxBy
Description copied from interface:RichIterable
Returns the maximum elements out of this container based on the natural order of the attribute returned by Function.- Specified by:
maxBy
in interfaceRichIterable<T>
-
count
Description copied from interface:RichIterable
Return the total number of elements that answer true to the specified predicate.Example using a Java 8 lambda expression:
int count = people.count(person -> person.getAddress().getState().getName().equals("New York"));
Example using an anonymous inner class:
int count = people.count(new Predicate<Person>() { public boolean accept(Person person) { return person.getAddress().getState().getName().equals("New York"); } });
- Specified by:
count
in interfaceRichIterable<T>
-
anySatisfy
Description copied from interface: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 interfaceRichIterable<T>
-
allSatisfy
Description copied from interface: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 interfaceRichIterable<T>
-
noneSatisfy
Description copied from interface: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 interfaceRichIterable<T>
-
injectInto
public <IV> IV injectInto(IV injectedValue, Function2<? super IV,? super T,? extends IV> function)Description copied from interface: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 interfaceRichIterable<T>
-
injectInto
Description copied from interface: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 interfaceRichIterable<T>
-
injectInto
Description copied from interface: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 interfaceRichIterable<T>
-
injectInto
Description copied from interface: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 interfaceRichIterable<T>
-
injectInto
Description copied from interface: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 interfaceRichIterable<T>
-
sumOfInt
Description copied from interface:RichIterable
Returns the final long result of evaluating function for each element of the iterable and adding the results together.- Specified by:
sumOfInt
in interfaceRichIterable<T>
-
sumOfFloat
Description copied from interface:RichIterable
Returns the final double result of evaluating function for each element of the iterable and adding the results together. It uses Kahan summation algorithm to reduce numerical error.- Specified by:
sumOfFloat
in interfaceRichIterable<T>
-
sumOfLong
Description copied from interface:RichIterable
Returns the final long result of evaluating function for each element of the iterable and adding the results together.- Specified by:
sumOfLong
in interfaceRichIterable<T>
-
sumOfDouble
Description copied from interface:RichIterable
Returns the final double result of evaluating function for each element of the iterable and adding the results together. It uses Kahan summation algorithm to reduce numerical error.- Specified by:
sumOfDouble
in interfaceRichIterable<T>
-
sumByInt
public <V> MutableObjectLongMap<V> sumByInt(Function<? super T,? extends V> groupBy, IntFunction<? super T> function)Description copied from interface:RichIterable
Groups and sums the values using the two specified functions.- Specified by:
sumByInt
in interfaceMutableCollection<T>
- Specified by:
sumByInt
in interfaceRichIterable<T>
-
sumByFloat
public <V> MutableObjectDoubleMap<V> sumByFloat(Function<? super T,? extends V> groupBy, FloatFunction<? super T> function)Description copied from interface:RichIterable
Groups and sums the values using the two specified functions.- Specified by:
sumByFloat
in interfaceMutableCollection<T>
- Specified by:
sumByFloat
in interfaceRichIterable<T>
-
sumByLong
public <V> MutableObjectLongMap<V> sumByLong(Function<? super T,? extends V> groupBy, LongFunction<? super T> function)Description copied from interface:RichIterable
Groups and sums the values using the two specified functions.- Specified by:
sumByLong
in interfaceMutableCollection<T>
- Specified by:
sumByLong
in interfaceRichIterable<T>
-
sumByDouble
public <V> MutableObjectDoubleMap<V> sumByDouble(Function<? super T,? extends V> groupBy, DoubleFunction<? super T> function)Description copied from interface:RichIterable
Groups and sums the values using the two specified functions.- Specified by:
sumByDouble
in interfaceMutableCollection<T>
- Specified by:
sumByDouble
in interfaceRichIterable<T>
-
select
Description copied from interface:MutableCollection
Returns a MutableCollection with all elements that evaluate to true for the specified predicate.MutableCollection<Integer> livesInLondon = people.select(person -> person.getAddress().getCity().equals("London"));
- Specified by:
select
in interfaceMutableCollection<T>
- Specified by:
select
in interfaceRichIterable<T>
-
select
Description copied from interface:RichIterable
Same as the select method with one parameter but uses the specified target collection for the results.Example using a Java 8 lambda expression:
MutableList<Person> selected = people.select(person -> person.person.getLastName().equals("Smith"), Lists.mutable.empty());
Example using an anonymous inner class:
MutableList<Person> selected = people.select(new Predicate<Person>() { public boolean accept(Person person) { return person.person.getLastName().equals("Smith"); } }, Lists.mutable.empty());
- Specified by:
select
in interfaceRichIterable<T>
- Parameters:
predicate
- aPredicate
to use as the select criteriatarget
- the Collection to append to for all elements in thisRichIterable
that meet select criteriapredicate
- Returns:
target
, which contains appended elements as a result of the select criteria- See Also:
RichIterable.select(Predicate)
-
reject
Description copied from interface:MutableCollection
Returns a MutableCollection with all elements that evaluate to false for the specified predicate.MutableCollection<Person> notSmiths = people.reject(person -> person.person.getLastName().equals("Smith"));
Using thePredicates
factory:MutableCollection<Person> notSmiths = people.reject(Predicates.attributeEqual("lastName", "Smith"));
- Specified by:
reject
in interfaceMutableCollection<T>
- Specified by:
reject
in interfaceRichIterable<T>
- Parameters:
predicate
- aPredicate
to use as the reject criteria- Returns:
- a RichIterable that contains elements that cause
Predicate.accept(Object)
method to evaluate to false
-
reject
Description copied from interface:RichIterable
Same as the reject method with one parameter but uses the specified target collection for the results.Example using a Java 8 lambda expression:
MutableList<Person> rejected = people.reject(person -> person.person.getLastName().equals("Smith"), Lists.mutable.empty());
Example using an anonymous inner class:
MutableList<Person> rejected = people.reject(new Predicate<Person>() { public boolean accept(Person person) { return person.person.getLastName().equals("Smith"); } }, Lists.mutable.empty());
- Specified by:
reject
in interfaceRichIterable<T>
- Parameters:
predicate
- aPredicate
to use as the reject criteriatarget
- the Collection to append to for all elements in thisRichIterable
that causePredicate#accept(Object)
method to evaluate to false- Returns:
target
, which contains appended elements as a result of the reject criteria
-
selectInstancesOf
Description copied from interface:MutableCollection
Returns all elements of the source collection that are instances of the Classclazz
.RichIterable<Integer> integers = List.mutable.with(new Integer(0), new Long(0L), new Double(0.0)).selectInstancesOf(Integer.class);
Co-variant example for MutableCollection:MutableCollection<Integer> integers = List.mutable.with(new Integer(0), new Long(0L), new Double(0.0)).selectInstancesOf(Integer.class);
- Specified by:
selectInstancesOf
in interfaceMutableCollection<T>
- Specified by:
selectInstancesOf
in interfaceRichIterable<T>
-
collect
Description copied from interface:MutableCollection
Returns a new MutableCollection with the results of applying the specified function to each element of the source collection.MutableCollection<String> names = people.collect(person -> person.getFirstName() + " " + person.getLastName());
- Specified by:
collect
in interfaceMutableCollection<T>
- Specified by:
collect
in interfaceRichIterable<T>
-
collectBoolean
Description copied from interface:MutableCollection
Returns a new primitiveboolean
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.Example using a Java 8 lambda expression:
BooleanIterable licenses = people.collectBoolean(person -> person.hasDrivingLicense());
Example using an anonymous inner class:
BooleanIterable licenses = people.collectBoolean(new BooleanFunction<Person>() { public boolean booleanValueOf(Person person) { return person.hasDrivingLicense(); } });
Co-variant example for MutableCollection:MutableBooleanCollection licenses = people.collectBoolean(person -> person.hasDrivingLicense());
- Specified by:
collectBoolean
in interfaceMutableCollection<T>
- Specified by:
collectBoolean
in interfaceRichIterable<T>
-
collectBoolean
public <R extends MutableBooleanCollection> R collectBoolean(BooleanFunction<? super T> booleanFunction, R target)Description copied from interface:RichIterable
Same asRichIterable.collectBoolean(BooleanFunction)
, except that the results are gathered into the specifiedtarget
collection.Example using a Java 8 lambda expression:
BooleanArrayList licenses = people.collectBoolean(person -> person.hasDrivingLicense(), new BooleanArrayList());
Example using an anonymous inner class:
BooleanArrayList licenses = people.collectBoolean(new BooleanFunction<Person>() { public boolean booleanValueOf(Person person) { return person.hasDrivingLicense(); } }, new BooleanArrayList());
- Specified by:
collectBoolean
in interfaceRichIterable<T>
- Parameters:
booleanFunction
- aBooleanFunction
to use as the collect transformation functiontarget
- the MutableBooleanCollection to append to for all elements in thisRichIterable
- Returns:
target
, which contains appended elements as a result of the collect transformation
-
collectByte
Description copied from interface:MutableCollection
Returns a new primitivebyte
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.Example using a Java 8 lambda expression:
ByteIterable bytes = people.collectByte(person -> person.getCode());
Example using an anonymous inner class:
ByteIterable bytes = people.collectByte(new ByteFunction<Person>() { public byte byteValueOf(Person person) { return person.getCode(); } });
Co-variant example for MutableCollection:MutableByteCollection bytes = people.collectByte(person -> person.getCode());
- Specified by:
collectByte
in interfaceMutableCollection<T>
- Specified by:
collectByte
in interfaceRichIterable<T>
-
collectByte
public <R extends MutableByteCollection> R collectByte(ByteFunction<? super T> byteFunction, R target)Description copied from interface:RichIterable
Same asRichIterable.collectByte(ByteFunction)
, except that the results are gathered into the specifiedtarget
collection.Example using a Java 8 lambda expression:
ByteArrayList bytes = people.collectByte(person -> person.getCode(), new ByteArrayList());
Example using an anonymous inner class:
ByteArrayList bytes = people.collectByte(new ByteFunction<Person>() { public byte byteValueOf(Person person) { return person.getCode(); } }, new ByteArrayList());
- Specified by:
collectByte
in interfaceRichIterable<T>
- Parameters:
byteFunction
- aByteFunction
to use as the collect transformation functiontarget
- the MutableByteCollection to append to for all elements in thisRichIterable
- Returns:
target
, which contains appended elements as a result of the collect transformation
-
collectChar
Description copied from interface:MutableCollection
Returns a new primitivechar
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.Example using a Java 8 lambda expression:
CharIterable chars = people.collectChar(person -> person.getMiddleInitial());
Example using an anonymous inner class:
CharIterable chars = people.collectChar(new CharFunction<Person>() { public char charValueOf(Person person) { return person.getMiddleInitial(); } });
Co-variant example for MutableCollection:MutableCharCollection chars = people.collectChar(person -> person.getMiddleInitial());
- Specified by:
collectChar
in interfaceMutableCollection<T>
- Specified by:
collectChar
in interfaceRichIterable<T>
-
collectChar
public <R extends MutableCharCollection> R collectChar(CharFunction<? super T> charFunction, R target)Description copied from interface:RichIterable
Same asRichIterable.collectChar(CharFunction)
, except that the results are gathered into the specifiedtarget
collection.Example using a Java 8 lambda expression:
CharArrayList chars = people.collectChar(person -> person.getMiddleInitial(), new CharArrayList());
Example using an anonymous inner class:
CharArrayList chars = people.collectChar(new CharFunction<Person>() { public char charValueOf(Person person) { return person.getMiddleInitial(); } }, new CharArrayList());
- Specified by:
collectChar
in interfaceRichIterable<T>
- Parameters:
charFunction
- aCharFunction
to use as the collect transformation functiontarget
- the MutableCharCollection to append to for all elements in thisRichIterable
- Returns:
target
, which contains appended elements as a result of the collect transformation
-
collectDouble
Description copied from interface:MutableCollection
Returns a new primitivedouble
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.Example using a Java 8 lambda expression:
DoubleIterable doubles = people.collectDouble(person -> person.getMilesFromNorthPole());
Example using an anonymous inner class:
DoubleIterable doubles = people.collectDouble(new DoubleFunction<Person>() { public double doubleValueOf(Person person) { return person.getMilesFromNorthPole(); } });
Co-variant example for MutableCollection:MutableDoubleCollection doubles = people.collectDouble(person -> person.getMilesFromNorthPole());
- Specified by:
collectDouble
in interfaceMutableCollection<T>
- Specified by:
collectDouble
in interfaceRichIterable<T>
-
collectDouble
public <R extends MutableDoubleCollection> R collectDouble(DoubleFunction<? super T> doubleFunction, R target)Description copied from interface:RichIterable
Same asRichIterable.collectDouble(DoubleFunction)
, except that the results are gathered into the specifiedtarget
collection.Example using a Java 8 lambda expression:
DoubleArrayList doubles = people.collectDouble(person -> person.getMilesFromNorthPole(), new DoubleArrayList());
Example using an anonymous inner class:
DoubleArrayList doubles = people.collectDouble(new DoubleFunction<Person>() { public double doubleValueOf(Person person) { return person.getMilesFromNorthPole(); } }, new DoubleArrayList());
- Specified by:
collectDouble
in interfaceRichIterable<T>
- Parameters:
doubleFunction
- aDoubleFunction
to use as the collect transformation functiontarget
- the MutableDoubleCollection to append to for all elements in thisRichIterable
- Returns:
target
, which contains appended elements as a result of the collect transformation
-
collectFloat
Description copied from interface:MutableCollection
Returns a new primitivefloat
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.Example using a Java 8 lambda expression:
FloatIterable floats = people.collectFloat(person -> person.getHeightInInches());
Example using an anonymous inner class:
FloatIterable floats = people.collectFloat(new FloatFunction<Person>() { public float floatValueOf(Person person) { return person.getHeightInInches(); } });
Co-variant example for MutableCollection:MutableFloatCollection floats = people.collectFloat(person -> person.getHeightInInches());
- Specified by:
collectFloat
in interfaceMutableCollection<T>
- Specified by:
collectFloat
in interfaceRichIterable<T>
-
collectFloat
public <R extends MutableFloatCollection> R collectFloat(FloatFunction<? super T> floatFunction, R target)Description copied from interface:RichIterable
Same asRichIterable.collectFloat(FloatFunction)
, except that the results are gathered into the specifiedtarget
collection.Example using a Java 8 lambda expression:
FloatArrayList floats = people.collectFloat(person -> person.getHeightInInches(), new FloatArrayList());
Example using an anonymous inner class:
FloatArrayList floats = people.collectFloat(new FloatFunction<Person>() { public float floatValueOf(Person person) { return person.getHeightInInches(); } }, new FloatArrayList());
- Specified by:
collectFloat
in interfaceRichIterable<T>
- Parameters:
floatFunction
- aFloatFunction
to use as the collect transformation functiontarget
- the MutableFloatCollection to append to for all elements in thisRichIterable
- Returns:
target
, which contains appended elements as a result of the collect transformation
-
collectInt
Description copied from interface:MutableCollection
Returns a new primitiveint
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.Example using a Java 8 lambda expression:
IntIterable ints = people.collectInt(person -> person.getAge());
Example using an anonymous inner class:
IntIterable ints = people.collectInt(new IntFunction<Person>() { public int intValueOf(Person person) { return person.getAge(); } });
Co-variant example for MutableCollection:MutableIntCollection ints = people.collectInt(person -> person.getAge());
- Specified by:
collectInt
in interfaceMutableCollection<T>
- Specified by:
collectInt
in interfaceRichIterable<T>
-
collectInt
Description copied from interface:RichIterable
Same asRichIterable.collectInt(IntFunction)
, except that the results are gathered into the specifiedtarget
collection.Example using a Java 8 lambda expression:
IntArrayList ints = people.collectInt(person -> person.getAge(), new IntArrayList());
Example using an anonymous inner class:
IntArrayList ints = people.collectInt(new IntFunction<Person>() { public int intValueOf(Person person) { return person.getAge(); } }, new IntArrayList());
- Specified by:
collectInt
in interfaceRichIterable<T>
- Parameters:
intFunction
- aIntFunction
to use as the collect transformation functiontarget
- the MutableIntCollection to append to for all elements in thisRichIterable
- Returns:
target
, which contains appended elements as a result of the collect transformation
-
collectLong
Description copied from interface:MutableCollection
Returns a new primitivelong
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.Example using a Java 8 lambda expression:
LongIterable longs = people.collectLong(person -> person.getGuid());
Example using an anonymous inner class:
LongIterable longs = people.collectLong(new LongFunction<Person>() { public long longValueOf(Person person) { return person.getGuid(); } });
Co-variant example for MutableCollection:MutableLongCollection longs = people.collectLong(person -> person.getGuid());
- Specified by:
collectLong
in interfaceMutableCollection<T>
- Specified by:
collectLong
in interfaceRichIterable<T>
-
collectLong
public <R extends MutableLongCollection> R collectLong(LongFunction<? super T> longFunction, R target)Description copied from interface:RichIterable
Same asRichIterable.collectLong(LongFunction)
, except that the results are gathered into the specifiedtarget
collection.Example using a Java 8 lambda expression:
LongArrayList longs = people.collectLong(person -> person.getGuid(), new LongArrayList());
Example using an anonymous inner class:
LongArrayList longs = people.collectLong(new LongFunction<Person>() { public long longValueOf(Person person) { return person.getGuid(); } }, new LongArrayList());
- Specified by:
collectLong
in interfaceRichIterable<T>
- Parameters:
longFunction
- aLongFunction
to use as the collect transformation functiontarget
- the MutableLongCollection to append to for all elements in thisRichIterable
- Returns:
target
, which contains appended elements as a result of the collect transformation
-
collectShort
Description copied from interface:MutableCollection
Returns a new primitiveshort
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.Example using a Java 8 lambda expression:
ShortIterable shorts = people.collectShort(person -> person.getNumberOfJunkMailItemsReceivedPerMonth());
Example using an anonymous inner class:
ShortIterable shorts = people.collectShort(new ShortFunction<Person>() { public short shortValueOf(Person person) { return person.getNumberOfJunkMailItemsReceivedPerMonth(); } });
Co-variant example for MutableCollection:MutableShortCollection shorts = people.collectShort(person -> person.getNumberOfJunkMailItemsReceivedPerMonth());
- Specified by:
collectShort
in interfaceMutableCollection<T>
- Specified by:
collectShort
in interfaceRichIterable<T>
-
collectShort
public <R extends MutableShortCollection> R collectShort(ShortFunction<? super T> shortFunction, R target)Description copied from interface:RichIterable
Same asRichIterable.collectShort(ShortFunction)
, except that the results are gathered into the specifiedtarget
collection.Example using a Java 8 lambda expression:
ShortArrayList shorts = people.collectShort(person -> person.getNumberOfJunkMailItemsReceivedPerMonth, new ShortArrayList());
Example using an anonymous inner class:
ShortArrayList shorts = people.collectShort(new ShortFunction<Person>() { public short shortValueOf(Person person) { return person.getNumberOfJunkMailItemsReceivedPerMonth; } }, new ShortArrayList());
- Specified by:
collectShort
in interfaceRichIterable<T>
- Parameters:
shortFunction
- aShortFunction
to use as the collect transformation functiontarget
- the MutableShortCollection to append to for all elements in thisRichIterable
- Returns:
target
, which contains appended elements as a result of the collect transformation
-
collect
public <V, R extends Collection<V>> R collect(Function<? super T,? extends V> function, R target)Description copied from interface:RichIterable
Same asRichIterable.collect(Function)
, except that the results are gathered into the specifiedtarget
collection.Example using a Java 8 lambda expression:
MutableList<String> names = people.collect(person -> person.getFirstName() + " " + person.getLastName(), Lists.mutable.empty());
Example using an anonymous inner class:
MutableList<String> names = people.collect(new Function<Person, String>() { public String valueOf(Person person) { return person.getFirstName() + " " + person.getLastName(); } }, Lists.mutable.empty());
- Specified by:
collect
in interfaceRichIterable<T>
- Parameters:
function
- aFunction
to use as the collect transformation functiontarget
- the Collection to append to for all elements in thisRichIterable
that meet select criteriafunction
- Returns:
target
, which contains appended elements as a result of the collect transformation- See Also:
RichIterable.collect(Function)
-
flatCollect
Description copied from interface:MutableCollection
flatCollect
is a special case ofRichIterable.collect(Function)
. Withcollect
, when theFunction
returns a collection, the result is a collection of collections.flatCollect
outputs a single "flattened" collection instead. This method is commonly called flatMap.Consider the following example where we have a
Person
class, and eachPerson
has a list ofAddress
objects. Take the followingFunction
:Function<Person, List<Address>> addressFunction = Person::getAddresses; RichIterable<Person> people = ...;
Usingcollect
returns a collection of collections of addresses.RichIterable<List<Address>> addresses = people.collect(addressFunction);
UsingflatCollect
returns a single flattened list of addresses.RichIterable<Address> addresses = people.flatCollect(addressFunction);
Co-variant example for MutableCollection:Function<Person, List<Address>> addressFunction = Person::getAddresses; MutableCollection<Person> people = ...; MutableCollection<List<Address>> addresses = people.collect(addressFunction); MutableCollection<Address> addresses = people.flatCollect(addressFunction);
- Specified by:
flatCollect
in interfaceMutableCollection<T>
- Specified by:
flatCollect
in interfaceRichIterable<T>
- Parameters:
function
- TheFunction
to apply- Returns:
- a new flattened collection produced by applying the given
function
-
flatCollect
public <V, R extends Collection<V>> R flatCollect(Function<? super T,? extends Iterable<V>> function, R target)Description copied from interface:RichIterable
Same as flatCollect, only the results are collected into the target collection.- Specified by:
flatCollect
in interfaceRichIterable<T>
- Parameters:
function
- TheFunction
to applytarget
- The collection into which results should be added.- Returns:
target
, which will contain a flattened collection of results produced by applying the givenfunction
- See Also:
RichIterable.flatCollect(Function)
-
collectIf
public <V> MutableCollection<V> collectIf(Predicate<? super T> predicate, Function<? super T,? extends V> function)Description copied from interface:MutableCollection
Returns a new MutableCollection with the results of applying the specified function to each element of the source collection, but only for elements that evaluate to true for the specified predicate.MutableCollection<String> collected = Lists.mutable.of().with(1, 2, 3).collectIf(Predicates.notNull(), Functions.getToString())
- Specified by:
collectIf
in interfaceMutableCollection<T>
- Specified by:
collectIf
in interfaceRichIterable<T>
-
collectIf
public <V, R extends Collection<V>> R collectIf(Predicate<? super T> predicate, Function<? super T,? extends V> function, R target)Description copied from interface:RichIterable
Same as the collectIf method with two parameters but uses the specified target collection for the results.- Specified by:
collectIf
in interfaceRichIterable<T>
- Parameters:
predicate
- aPredicate
to use as the select criteriafunction
- aFunction
to use as the collect transformation functiontarget
- the Collection to append to for all elements in thisRichIterable
that meet the collect criteriapredicate
- Returns:
targetCollection
, which contains appended elements as a result of the collect criteria and transformation- See Also:
RichIterable.collectIf(Predicate, Function)
-
selectAndRejectWith
public <P> Twin<MutableList<T>> selectAndRejectWith(Predicate2<? super T,? super P> predicate, P parameter)Description copied from interface:MutableCollection
Filters a collection into two separate collections based on a predicate returned via a Pair.e.g. return lastNames.selectAndRejectWith(Predicates2.lessThan(), "Mason");
- Specified by:
selectAndRejectWith
in interfaceMutableCollection<T>
-
partition
Description copied from interface:MutableCollection
Filters a collection into a PartitionedIterable based on the evaluation of the predicate.Example using a Java 8 lambda expression:
PartitionIterable<Person> newYorkersAndNonNewYorkers = people.partition(person -> person.getAddress().getState().getName().equals("New York"));
Example using an anonymous inner class:
PartitionIterable<Person> newYorkersAndNonNewYorkers = people.partition(new Predicate<Person>() { public boolean accept(Person person) { return person.getAddress().getState().getName().equals("New York"); } });
Co-variant example for MutableCollection:PartitionMutableCollection<Person> newYorkersAndNonNewYorkers = people.partition(person -> person.getAddress().getState().getName().equals("New York"));
- Specified by:
partition
in interfaceMutableCollection<T>
- Specified by:
partition
in interfaceRichIterable<T>
-
partitionWith
public <P> PartitionMutableCollection<T> partitionWith(Predicate2<? super T,? super P> predicate, P parameter)Description copied from interface:MutableCollection
Filters a collection into a PartitionIterable based on the evaluation of the predicate.Example using a Java 8 lambda expression:
PartitionIterable<Person> newYorkersAndNonNewYorkers = people.partitionWith((Person person, String state) -> person.getAddress().getState().getName().equals(state), "New York");
Example using an anonymous inner class:
PartitionIterable<Person> newYorkersAndNonNewYorkers = people.partitionWith(new Predicate2<Person, String>() { public boolean accept(Person person, String state) { return person.getAddress().getState().getName().equals(state); } }, "New York");
Co-variant example for MutableCollection:PartitionMutableCollection<Person> newYorkersAndNonNewYorkers = people.partitionWith((Person person, String state) -> person.getAddress().getState().getName().equals(state), "New York");
- Specified by:
partitionWith
in interfaceMutableCollection<T>
- Specified by:
partitionWith
in interfaceRichIterable<T>
-
size
public int size()Description copied from interface:RichIterable
Returns the number of items in this iterable.- Specified by:
size
in interfaceCollection<T>
- Specified by:
size
in interfaceRichIterable<T>
-
isEmpty
public boolean isEmpty()Description copied from interface:RichIterable
Returns true if this iterable has zero items.- Specified by:
isEmpty
in interfaceCollection<T>
- Specified by:
isEmpty
in interfaceRichIterable<T>
-
contains
Description copied from interface:RichIterable
Returns true if the iterable has an element which responds true to element.equals(object).- Specified by:
contains
in interfaceCollection<T>
- Specified by:
contains
in interfaceRichIterable<T>
-
iterator
-
toArray
Description copied from interface:RichIterable
Converts this iterable to an array.- Specified by:
toArray
in interfaceCollection<T>
- Specified by:
toArray
in interfaceRichIterable<T>
- See Also:
Collection.toArray()
-
toArray
public <E> E[] toArray(E[] a)Description copied from interface:RichIterable
Converts this iterable to an array using the specified target array, assuming the target array is as long or longer than the iterable.- Specified by:
toArray
in interfaceCollection<T>
- Specified by:
toArray
in interfaceRichIterable<T>
- See Also:
Collection.toArray(Object[])
-
add
- Specified by:
add
in interfaceCollection<T>
-
remove
- Specified by:
remove
in interfaceCollection<T>
-
containsAll
Description copied from interface:RichIterable
Returns true if all elements in source are contained in this collection.- Specified by:
containsAll
in interfaceCollection<T>
- Specified by:
containsAll
in interfaceRichIterable<T>
- See Also:
Collection.containsAll(Collection)
-
containsAllIterable
Description copied from interface:RichIterable
Returns true if all elements in source are contained in this collection.- Specified by:
containsAllIterable
in interfaceRichIterable<T>
-
containsAllArguments
Description copied from interface:RichIterable
Returns true if all elements in the specified var arg array are contained in this collection.- Specified by:
containsAllArguments
in interfaceRichIterable<T>
-
addAll
- Specified by:
addAll
in interfaceCollection<T>
-
addAllIterable
- Specified by:
addAllIterable
in interfaceMutableCollection<T>
- See Also:
Collection.addAll(Collection)
-
removeAll
- Specified by:
removeAll
in interfaceCollection<T>
-
removeAllIterable
- Specified by:
removeAllIterable
in interfaceMutableCollection<T>
- See Also:
Collection.removeAll(Collection)
-
retainAll
- Specified by:
retainAll
in interfaceCollection<T>
-
retainAllIterable
- Specified by:
retainAllIterable
in interfaceMutableCollection<T>
- See Also:
Collection.retainAll(Collection)
-
clear
public void clear()- Specified by:
clear
in interfaceCollection<T>
-
forEachWith
Description copied from interface:InternalIterable
The procedure2 is evaluated for each element in the iterable with the specified parameter provided as the second argument.Example using a Java 8 lambda:
people.forEachWith((Person person, Person other) -> { if (person.isRelatedTo(other)) { LOGGER.info(person.getName()); } }, fred);
Example using an anonymous inner class:
people.forEachWith(new Procedure2<Person, Person>() { public void value(Person person, Person other) { if (person.isRelatedTo(other)) { LOGGER.info(person.getName()); } } }, fred);
- Specified by:
forEachWith
in interfaceInternalIterable<T>
-
selectWith
public <P> MutableCollection<T> selectWith(Predicate2<? super T,? super P> predicate, P parameter)Description copied from interface:MutableCollection
Returns a MutableCollection with all elements that evaluate to true for the specified predicate2 and parameter.MutableCollection<Integer> fives = integers.selectWith(Predicates2.equal(), Integer.valueOf(5));
- Specified by:
selectWith
in interfaceMutableCollection<T>
- Specified by:
selectWith
in interfaceRichIterable<T>
- Parameters:
predicate
- aPredicate2
to use as the select criteriaparameter
- a parameter to pass in for evaluation of the second argumentP
inpredicate
- See Also:
RichIterable.select(Predicate)
-
selectWith
public <P, R extends Collection<T>> R selectWith(Predicate2<? super T,? super P> predicate, P parameter, R targetCollection)Description copied from interface:RichIterable
Similar toRichIterable.select(Predicate, Collection)
, except with an evaluation parameter for the second generic argument inPredicate2
.E.g. return a
Collection
of Person elements where the person has an age greater than or equal to 18 yearsExample using a Java 8 lambda expression:
MutableList<Person> selected = people.selectWith((Person person, Integer age) -> person.getAge()>= age, Integer.valueOf(18), Lists.mutable.empty());
Example using an anonymous inner class:
MutableList<Person> selected = people.selectWith(new Predicate2<Person, Integer>() { public boolean accept(Person person, Integer age) { return person.getAge()>= age; } }, Integer.valueOf(18), Lists.mutable.empty());
- Specified by:
selectWith
in interfaceRichIterable<T>
- Parameters:
predicate
- aPredicate2
to use as the select criteriaparameter
- a parameter to pass in for evaluation of the second argumentP
inpredicate
targetCollection
- the Collection to append to for all elements in thisRichIterable
that meet select criteriapredicate
- Returns:
targetCollection
, which contains appended elements as a result of the select criteria- See Also:
RichIterable.select(Predicate)
,RichIterable.select(Predicate, Collection)
-
rejectWith
public <P> MutableCollection<T> rejectWith(Predicate2<? super T,? super P> predicate, P parameter)Description copied from interface:MutableCollection
Returns a MutableCollection with all elements that evaluate to false for the specified predicate2 and parameter.e.g. MutableCollection<Integer> selected = integers.rejectWith(Predicates2.equal(), Integer.valueOf(5));
- Specified by:
rejectWith
in interfaceMutableCollection<T>
- Specified by:
rejectWith
in interfaceRichIterable<T>
- Parameters:
predicate
- aPredicate2
to use as the select criteriaparameter
- a parameter to pass in for evaluation of the second argumentP
inpredicate
- See Also:
RichIterable.select(Predicate)
-
rejectWith
public <P, R extends Collection<T>> R rejectWith(Predicate2<? super T,? super P> predicate, P parameter, R targetCollection)Description copied from interface:RichIterable
Similar toRichIterable.reject(Predicate, Collection)
, except with an evaluation parameter for the second generic argument inPredicate2
.E.g. return a
Collection
of Person elements where the person has an age greater than or equal to 18 yearsExample using a Java 8 lambda expression:
MutableList<Person> rejected = people.rejectWith((Person person, Integer age) -> person.getAge() < age, Integer.valueOf(18), Lists.mutable.empty());
Example using an anonymous inner class:
MutableList<Person> rejected = people.rejectWith(new Predicate2<Person, Integer>() { public boolean accept(Person person, Integer age) { return person.getAge() < age; } }, Integer.valueOf(18), Lists.mutable.empty());
- Specified by:
rejectWith
in interfaceRichIterable<T>
- Parameters:
predicate
- aPredicate2
to use as the reject criteriaparameter
- a parameter to pass in for evaluation of the second argumentP
inpredicate
targetCollection
- the Collection to append to for all elements in thisRichIterable
that causePredicate#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)
-
collectWith
public <P, V> MutableCollection<V> collectWith(Function2<? super T,? super P,? extends V> function, P parameter)Description copied from interface:MutableCollection
Same asRichIterable.collect(Function)
with aFunction2
and specified parameter which is passed to the block.Example using a Java 8 lambda expression:
RichIterable<Integer> integers = Lists.mutable.with(1, 2, 3).collectWith((each, parameter) -> each + parameter, Integer.valueOf(1));
Example using an anonymous inner class:
Function2<Integer, Integer, Integer> addParameterFunction = new Function2<Integer, Integer, Integer>() { public Integer value(Integer each, Integer parameter) { return each + parameter; } }; RichIterable<Integer> integers = Lists.mutable.with(1, 2, 3).collectWith(addParameterFunction, Integer.valueOf(1));
Co-variant example for MutableCollection:MutableCollection<Integer> integers = Lists.mutable.with(1, 2, 3).collectWith((each, parameter) -> each + parameter, Integer.valueOf(1));
- Specified by:
collectWith
in interfaceMutableCollection<T>
- Specified by:
collectWith
in interfaceRichIterable<T>
- Parameters:
function
- AFunction2
to use as the collect transformation functionparameter
- A parameter to pass in for evaluation of the second argumentP
infunction
- Returns:
- A new
RichIterable
that contains the transformed elements returned byFunction2.value(Object, Object)
- See Also:
RichIterable.collect(Function)
-
collectWith
public <P, A, R extends Collection<A>> R collectWith(Function2<? super T,? super P,? extends A> function, P parameter, R targetCollection)Description copied from interface:RichIterable
Same as collectWith but with a targetCollection parameter to gather the results.Example using a Java 8 lambda expression:
MutableSet<Integer> integers = Lists.mutable.with(1, 2, 3).collectWith((each, parameter) -> each + parameter, Integer.valueOf(1), Sets.mutable.empty());
Example using an anonymous inner class:
Function2<Integer, Integer, Integer> addParameterFunction = new Function2<Integer, Integer, Integer>() { public Integer value(final Integer each, final Integer parameter) { return each + parameter; } }; MutableSet<Integer> integers = Lists.mutable.with(1, 2, 3).collectWith(addParameterFunction, Integer.valueOf(1), Sets.mutable.empty());
- Specified by:
collectWith
in interfaceRichIterable<T>
- Parameters:
function
- aFunction2
to use as the collect transformation functionparameter
- a parameter to pass in for evaluation of the second argumentP
infunction
targetCollection
- the Collection to append to for all elements in thisRichIterable
that meet select criteriafunction
- Returns:
targetCollection
, which contains appended elements as a result of the collect transformation
-
injectIntoWith
public <IV, P> IV injectIntoWith(IV injectValue, Function3<? super IV,? super T,? super P,? extends IV> function, P parameter)Description copied from interface:MutableCollection
Returns the final result of evaluating function using each element of the iterable, the previous evaluation result and 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. The parameter value is always used as the third parameter to the function call.- Specified by:
injectIntoWith
in interfaceMutableCollection<T>
- See Also:
RichIterable.injectInto(Object, Function2)
-
into
Description copied from interface:RichIterable
Adds all the elements in this iterable to the specific target Collection.- Specified by:
into
in interfaceRichIterable<T>
-
toList
Description copied from interface:RichIterable
Converts the collection to a MutableList implementation.- Specified by:
toList
in interfaceRichIterable<T>
-
toSortedList
Description copied from interface:RichIterable
Converts the collection to a MutableList implementation and sorts it using the specified comparator.- Specified by:
toSortedList
in interfaceRichIterable<T>
-
toSortedListBy
public <V extends Comparable<? super V>> MutableList<T> toSortedListBy(Function<? super T,? extends V> function)Description copied from interface:RichIterable
Converts the collection to a MutableList implementation and sorts it based on the natural order of the attribute returned byfunction
.- Specified by:
toSortedListBy
in interfaceRichIterable<T>
-
toSortedSet
Description copied from interface:RichIterable
Converts the collection to a MutableSortedSet implementation and sorts it using the natural order of the elements.- Specified by:
toSortedSet
in interfaceRichIterable<T>
-
toSortedSet
Description copied from interface:RichIterable
Converts the collection to a MutableSortedSet implementation and sorts it using the specified comparator.- Specified by:
toSortedSet
in interfaceRichIterable<T>
-
toSortedSetBy
public <V extends Comparable<? super V>> MutableSortedSet<T> toSortedSetBy(Function<? super T,? extends V> function)Description copied from interface:RichIterable
Converts the collection to a MutableSortedSet implementation and sorts it based on the natural order of the attribute returned byfunction
.- Specified by:
toSortedSetBy
in interfaceRichIterable<T>
-
toSet
Description copied from interface:RichIterable
Converts the collection to a MutableSet implementation.- Specified by:
toSet
in interfaceRichIterable<T>
-
toBag
Description copied from interface:RichIterable
Converts the collection to the default MutableBag implementation.- Specified by:
toBag
in interfaceRichIterable<T>
-
toSortedBag
Description copied from interface:RichIterable
Converts the collection to a MutableSortedBag implementation and sorts it using the natural order of the elements.- Specified by:
toSortedBag
in interfaceRichIterable<T>
-
toSortedBag
Description copied from interface:RichIterable
Converts the collection to the MutableSortedBag implementation and sorts it using the specified comparator.- Specified by:
toSortedBag
in interfaceRichIterable<T>
-
toSortedBagBy
public <V extends Comparable<? super V>> MutableSortedBag<T> toSortedBagBy(Function<? super T,? extends V> function)Description copied from interface:RichIterable
Converts the collection to a MutableSortedBag implementation and sorts it based on the natural order of the attribute returned byfunction
.- Specified by:
toSortedBagBy
in interfaceRichIterable<T>
-
toMap
public <K, V> MutableMap<K,V> toMap(Function<? super T,? extends K> keyFunction, Function<? super T,? extends V> valueFunction)Description copied from interface:RichIterable
Converts the collection to a MutableMap implementation using the specified key and value functions.- Specified by:
toMap
in interfaceRichIterable<T>
-
toMap
public <K, V, R extends Map<K, V>> R toMap(Function<? super T,? extends K> keyFunction, Function<? super T,? extends V> valueFunction, R target)Description copied from interface:RichIterable
Same asRichIterable.toMap(Function, Function)
, except that the results are gathered into the specifiedtarget
map.- Specified by:
toMap
in interfaceRichIterable<T>
-
toSortedMap
public <K, V> MutableSortedMap<K,V> toSortedMap(Function<? super T,? extends K> keyFunction, Function<? super T,? extends V> valueFunction)Description copied from interface: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 interfaceRichIterable<T>
-
toSortedMap
public <K, V> MutableSortedMap<K,V> toSortedMap(Comparator<? super K> comparator, Function<? super T,? extends K> keyFunction, Function<? super T,? extends V> valueFunction)Description copied from interface:RichIterable
Converts the collection to a MutableSortedMap implementation using the specified key and value functions sorted by the given comparator.- Specified by:
toSortedMap
in interfaceRichIterable<T>
-
toSortedMapBy
public <KK extends Comparable<? super KK>, K, V> MutableSortedMap<K,V> toSortedMapBy(Function<? super K,KK> sortBy, Function<? super T,? extends K> keyFunction, Function<? super T,? extends V> valueFunction)Description copied from interface:RichIterable
Converts the collection to a MutableSortedMap implementation using the specified key and value functions and sorts it based on the natural order of the attribute returned bysortBy
function.- Specified by:
toSortedMapBy
in interfaceRichIterable<T>
-
toBiMap
public <K, V> MutableBiMap<K,V> toBiMap(Function<? super T,? extends K> keyFunction, Function<? super T,? extends V> valueFunction)Description copied from interface:RichIterable
Converts the collection to a BiMap implementation using the specified key and value functions.- Specified by:
toBiMap
in interfaceRichIterable<T>
-
asLazy
Description copied from interface:RichIterable
Returns a lazy (deferred) iterable, most likely implemented by calling LazyIterate.adapt(this).- Specified by:
asLazy
in interfaceRichIterable<T>
-
countWith
Description copied from interface:RichIterable
Returns the total number of elements that evaluate to true for the specified predicate.e.g. return lastNames.countWith(Predicates2.equal(), "Smith");
- Specified by:
countWith
in interfaceRichIterable<T>
-
anySatisfyWith
Description copied from interface:RichIterable
Returns true if the predicate evaluates to true for any element of the collection, or return false. Returns false if the collection is empty.- Specified by:
anySatisfyWith
in interfaceRichIterable<T>
-
allSatisfyWith
Description copied from interface:RichIterable
Returns true if the predicate evaluates to true for every element of the collection, or returns false.- Specified by:
allSatisfyWith
in interfaceRichIterable<T>
-
noneSatisfyWith
Description copied from interface:RichIterable
Returns true if the predicate evaluates to false for every element of the collection, or return false. Returns true if the collection is empty.- Specified by:
noneSatisfyWith
in interfaceRichIterable<T>
-
toString
Description copied from interface:RichIterable
Returns a string with the elements of this iterable separated by commas with spaces and enclosed in square brackets.Assert.assertEquals("[]", Lists.mutable.empty().toString()); Assert.assertEquals("[1]", Lists.mutable.with(1).toString()); Assert.assertEquals("[1, 2, 3]", Lists.mutable.with(1, 2, 3).toString());
- Specified by:
toString
in interfaceRichIterable<T>
- Overrides:
toString
in classObject
- Returns:
- a string representation of this RichIterable
- See Also:
AbstractCollection.toString()
-
appendString
Description copied from interface:RichIterable
Prints a string representation of this collection onto the givenAppendable
. Prints the string returned byRichIterable.makeString(String, String, String)
.- Specified by:
appendString
in interfaceRichIterable<T>
-
groupBy
Description copied from interface:MutableCollection
For each element of the iterable, the function is evaluated and the results of these evaluations are collected into a new multimap, where the transformed value is the key and the original values are added to the same (or similar) species of collection as the source iterable.Example using a Java 8 method reference:
Multimap<String, Person> peopleByLastName = people.groupBy(Person::getLastName);
Example using an anonymous inner class:
Multimap<String, Person> peopleByLastName = people.groupBy(new Function<Person, String>() { public String valueOf(Person person) { return person.getLastName(); } });
Co-variant example for MutableCollection:MutableMultimap<String, Person> peopleByLastName = people.groupBy(Person::getLastName);
- Specified by:
groupBy
in interfaceMutableCollection<T>
- Specified by:
groupBy
in interfaceRichIterable<T>
-
groupBy
public <V, R extends MutableMultimap<V, T>> R groupBy(Function<? super T,? extends V> function, R target)Description copied from interface:RichIterable
Same asRichIterable.groupBy(Function)
, except that the results are gathered into the specifiedtarget
multimap.Example using a Java 8 method reference:
FastListMultimap<String, Person> peopleByLastName = people.groupBy(Person::getLastName, new FastListMultimap<String, Person>());
Example using an anonymous inner class:
FastListMultimap<String, Person> peopleByLastName = people.groupBy(new Function<Person, String>() { public String valueOf(Person person) { return person.getLastName(); } }, new FastListMultimap<String, Person>());
- Specified by:
groupBy
in interfaceRichIterable<T>
-
groupByEach
Description copied from interface:RichIterable
Similar toRichIterable.groupBy(Function)
, except the result of evaluating function will return a collection of keys for each value.- Specified by:
groupByEach
in interfaceMutableCollection<T>
- Specified by:
groupByEach
in interfaceRichIterable<T>
-
groupByEach
public <V, R extends MutableMultimap<V, T>> R groupByEach(Function<? super T,? extends Iterable<V>> function, R target)Description copied from interface:RichIterable
Same asRichIterable.groupByEach(Function)
, except that the results are gathered into the specifiedtarget
multimap.- Specified by:
groupByEach
in interfaceRichIterable<T>
-
groupByUniqueKey
Description copied from interface:RichIterable
For each element of the iterable, the function is evaluated and he results of these evaluations are collected into a new map, where the transformed value is the key. The generated keys must each be unique, or else an exception is thrown.- Specified by:
groupByUniqueKey
in interfaceMutableCollection<T>
- Specified by:
groupByUniqueKey
in interfaceRichIterable<T>
- See Also:
RichIterable.groupBy(Function)
-
groupByUniqueKey
public <V, R extends MutableMapIterable<V, T>> R groupByUniqueKey(Function<? super T,? extends V> function, R target)Description copied from interface:RichIterable
Same asRichIterable.groupByUniqueKey(Function)
, except that the results are gathered into the specifiedtarget
map.- Specified by:
groupByUniqueKey
in interfaceRichIterable<T>
- See Also:
RichIterable.groupByUniqueKey(Function)
-
zip
Description copied from interface:RichIterable
Returns aRichIterable
formed from thisRichIterable
and anotherRichIterable
by combining corresponding elements in pairs. If one of the twoRichIterable
s is longer than the other, its remaining elements are ignored.- Specified by:
zip
in interfaceMutableCollection<T>
- Specified by:
zip
in interfaceRichIterable<T>
- Type Parameters:
S
- the type of the second half of the returned pairs- Parameters:
that
- TheRichIterable
providing the second half of each result pair- Returns:
- A new
RichIterable
containing pairs consisting of corresponding elements of thisRichIterable
and that. The length of the returnedRichIterable
is the minimum of the lengths of thisRichIterable
and that.
-
zip
Description copied from interface:RichIterable
Same asRichIterable.zip(Iterable)
but usestarget
for output.- Specified by:
zip
in interfaceRichIterable<T>
-
zipWithIndex
Description copied from interface:RichIterable
Zips thisRichIterable
with its indices.- Specified by:
zipWithIndex
in interfaceMutableCollection<T>
- Specified by:
zipWithIndex
in interfaceRichIterable<T>
- Returns:
- A new
RichIterable
containing pairs consisting of all elements of thisRichIterable
paired with their index. Indices start at 0. - See Also:
RichIterable.zip(Iterable)
-
zipWithIndex
Description copied from interface:RichIterable
Same asRichIterable.zipWithIndex()
but usestarget
for output.- Specified by:
zipWithIndex
in interfaceRichIterable<T>
-
chunk
Description copied from interface:RichIterable
Partitions elements in fixed size chunks.- Specified by:
chunk
in interfaceRichIterable<T>
- Parameters:
size
- the number of elements per chunk- Returns:
- A
RichIterable
containingRichIterable
s of sizesize
, except the last will be truncated if the elements don't divide evenly.
-
aggregateInPlaceBy
public <K, V> MutableMap<K,V> aggregateInPlaceBy(Function<? super T,? extends K> groupBy, Function0<? extends V> zeroValueFactory, Procedure2<? super V,? super T> mutatingAggregator)Description copied from interface: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 interfaceMutableCollection<T>
- Specified by:
aggregateInPlaceBy
in interfaceRichIterable<T>
-