Class UnmodifiableRichIterable<T>
- java.lang.Object
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- org.eclipse.collections.impl.UnmodifiableRichIterable<T>
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- All Implemented Interfaces:
java.io.Serializable
,java.lang.Iterable<T>
,InternalIterable<T>
,RichIterable<T>
public class UnmodifiableRichIterable<T> extends java.lang.Object implements RichIterable<T>, java.io.Serializable
An unmodifiable view of a RichIterable.- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field Description protected RichIterable<T>
iterable
private static long
serialVersionUID
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Constructor Summary
Constructors Modifier Constructor Description protected
UnmodifiableRichIterable(RichIterable<T> richIterable)
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description <K,V>
MapIterable<K,V>aggregateBy(Function<? super T,? extends K> groupBy, Function0<? extends V> zeroValueFactory, 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>
MapIterable<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(java.lang.Appendable appendable)
Prints a string representation of this collection onto the givenAppendable
.void
appendString(java.lang.Appendable appendable, java.lang.String separator)
Prints a string representation of this collection onto the givenAppendable
.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 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.<V> RichIterable<V>
collect(Function<? super T,? extends V> function)
Returns a new collection with the results of applying the specified function on each element of the source collection.<V,R extends java.util.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.BooleanIterable
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.ByteIterable
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.CharIterable
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.DoubleIterable
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.FloatIterable
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> RichIterable<V>
collectIf(Predicate<? super T> predicate, Function<? super T,? extends V> function)
Returns a new collection with the results of applying the specified function on each element of the source collection, but only for those elements which return true upon evaluation of the predicate.<V,R extends java.util.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.IntIterable
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.LongIterable
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.ShortIterable
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,V>
RichIterable<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.<P,V,R extends java.util.Collection<V>>
RcollectWith(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<?> source)
Returns true if all elements in source are contained in this 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(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.java.util.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> java.util.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> RichIterable<V>
flatCollect(Function<? super T,? extends java.lang.Iterable<V>> function)
flatCollect
is a special case ofRichIterable.collect(Function)
.<V,R extends java.util.Collection<V>>
RflatCollect(Function<? super T,? extends java.lang.Iterable<V>> function, R target)
Same as flatCollect, only the results are collected into the target collection.<R extends MutableBooleanCollection>
RflatCollectBoolean(Function<? super T,? extends BooleanIterable> function, R target)
Same as flatCollect, only the results are collected into the target collection.<R extends MutableByteCollection>
RflatCollectByte(Function<? super T,? extends ByteIterable> function, R target)
Same as flatCollect, only the results are collected into the target collection.<R extends MutableCharCollection>
RflatCollectChar(Function<? super T,? extends CharIterable> function, R target)
Same as flatCollect, only the results are collected into the target collection.<R extends MutableDoubleCollection>
RflatCollectDouble(Function<? super T,? extends DoubleIterable> function, R target)
Same as flatCollect, only the results are collected into the target collection.<R extends MutableFloatCollection>
RflatCollectFloat(Function<? super T,? extends FloatIterable> function, R target)
Same as flatCollect, only the results are collected into the target collection.<R extends MutableIntCollection>
RflatCollectInt(Function<? super T,? extends IntIterable> function, R target)
Same as flatCollect, only the results are collected into the target collection.<R extends MutableLongCollection>
RflatCollectLong(Function<? super T,? extends LongIterable> function, R target)
Same as flatCollect, only the results are collected into the target collection.<R extends MutableShortCollection>
RflatCollectShort(Function<? super T,? extends ShortIterable> 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> Multimap<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> Multimap<V,T>
groupByEach(Function<? super T,? extends java.lang.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 java.lang.Iterable<V>> function, R target)
Same asRichIterable.groupByEach(Function)
, except that the results are gathered into the specifiedtarget
multimap.<V> MapIterable<V,T>
groupByUniqueKey(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 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.<R extends java.util.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.java.util.Iterator<T>
iterator()
java.lang.String
makeString()
Returns a string representation of this collection by delegating toRichIterable.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 toRichIterable.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 with the elements separated by the specified separator and enclosed between the start and end strings.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>>
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(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>>
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()static <E,RI extends RichIterable<E>>
UnmodifiableRichIterable<E>of(RI iterable)
This method will take a RichIterable and wrap it directly in a UnmodifiableRichIterable.PartitionIterable<T>
partition(Predicate<? super T> predicate)
Filters a collection into a PartitionedIterable based on the evaluation of the predicate.<P> PartitionIterable<T>
partitionWith(Predicate2<? super T,? super P> predicate, P parameter)
Filters a collection into a PartitionIterable based on the evaluation of the predicate.RichIterable<T>
reject(Predicate<? super T> predicate)
Returns all elements of the source collection that return false when evaluating of the predicate.<R extends java.util.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> RichIterable<T>
rejectWith(Predicate2<? super T,? super P> predicate, P parameter)
Similar toRichIterable.reject(Predicate)
, except with an evaluation parameter for the second generic argument inPredicate2
.<P,R extends java.util.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
.RichIterable<T>
select(Predicate<? super T> predicate)
Returns all elements of the source collection that return true when evaluating the predicate.<R extends java.util.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.<S> RichIterable<S>
selectInstancesOf(java.lang.Class<S> clazz)
Returns all elements of the source collection that are instances of the Classclazz
.<P> RichIterable<T>
selectWith(Predicate2<? super T,? super P> predicate, P parameter)
Similar toRichIterable.select(Predicate)
, except with an evaluation parameter for the second generic argument inPredicate2
.<P,R extends java.util.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> ObjectDoubleMap<V>
sumByDouble(Function<? super T,? extends V> groupBy, DoubleFunction<? super T> function)
Groups and sums the values using the two specified functions.<V> ObjectDoubleMap<V>
sumByFloat(Function<? super T,? extends V> groupBy, FloatFunction<? super T> function)
Groups and sums the values using the two specified functions.<V> ObjectLongMap<V>
sumByInt(Function<? super T,? extends V> groupBy, IntFunction<? super T> function)
Groups and sums the values using the two specified functions.<V> ObjectLongMap<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.RichIterable<T>
tap(Procedure<? super T> procedure)
Executes the Procedure for each element in the iterable and returnsthis
.java.lang.Object[]
toArray()
Converts this iterable to an array.<T> T[]
toArray(T[] 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.<NK,NV>
MutableBiMap<NK,NV>toBiMap(Function<? super T,? extends NK> keyFunction, Function<? super T,? extends NV> 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.<NK,NV>
MutableMap<NK,NV>toMap(Function<? super T,? extends NK> keyFunction, Function<? super T,? extends NV> valueFunction)
Converts the collection to a MutableMap implementation using the specified key and value functions.<NK,NV,R extends java.util.Map<NK,NV>>
RtoMap(Function<? super T,? extends NK> keyFunction, Function<? super T,? extends NV> 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(java.util.Comparator<? super T> comparator)
Converts the collection to the MutableSortedBag implementation and sorts it using the specified comparator.MutableList<T>
toSortedList()
Converts the collection to a MutableList implementation and sorts it using the natural order of the elements.MutableList<T>
toSortedList(java.util.Comparator<? super T> comparator)
Converts the collection to a MutableList implementation and sorts it using the specified comparator.<NK,NV>
MutableSortedMap<NK,NV>toSortedMap(java.util.Comparator<? super NK> comparator, Function<? super T,? extends NK> keyFunction, Function<? super T,? extends NV> valueFunction)
Converts the collection to a MutableSortedMap implementation using the specified key and value functions sorted by the given comparator.<NK,NV>
MutableSortedMap<NK,NV>toSortedMap(Function<? super T,? extends NK> keyFunction, Function<? super T,? extends NV> valueFunction)
Converts the collection to a MutableSortedMap implementation using the specified key and value functions sorted by the key elements' natural ordering.MutableSortedSet<T>
toSortedSet()
Converts the collection to a MutableSortedSet implementation and sorts it using the natural order of the elements.MutableSortedSet<T>
toSortedSet(java.util.Comparator<? super T> comparator)
Converts the collection to a MutableSortedSet implementation and sorts it using the specified comparator.java.lang.String
toString()
Returns a string with the elements of this iterable separated by commas with spaces and enclosed in square brackets.<S> RichIterable<Pair<T,S>>
zip(java.lang.Iterable<S> that)
Returns aRichIterable
formed from thisRichIterable
and anotherRichIterable
by combining corresponding elements in pairs.<S,R extends java.util.Collection<Pair<T,S>>>
Rzip(java.lang.Iterable<S> that, R target)
Same asRichIterable.zip(Iterable)
but usestarget
for output.RichIterable<Pair<T,java.lang.Integer>>
zipWithIndex()
Zips thisRichIterable
with its indices.<R extends java.util.Collection<Pair<T,java.lang.Integer>>>
RzipWithIndex(R target)
Same asRichIterable.zipWithIndex()
but usestarget
for output.-
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Methods inherited from interface org.eclipse.collections.api.InternalIterable
forEach
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Methods inherited from interface org.eclipse.collections.api.RichIterable
aggregateBy, containsAny, containsAnyIterable, containsBy, containsNone, containsNoneIterable, countBy, countBy, countByEach, countByEach, countByWith, countByWith, flatCollectWith, flatCollectWith, forEach, getAny, groupByAndCollect, injectIntoDouble, injectIntoFloat, injectIntoInt, injectIntoLong, makeString, maxByOptional, maxOptional, maxOptional, minByOptional, minOptional, minOptional, reduce, reduceInPlace, reduceInPlace, summarizeDouble, summarizeFloat, summarizeInt, summarizeLong, toImmutableBag, toImmutableBiMap, toImmutableList, toImmutableMap, toImmutableSet, toImmutableSortedBag, toImmutableSortedBag, toImmutableSortedBagBy, toImmutableSortedList, toImmutableSortedList, toImmutableSortedListBy, toImmutableSortedSet, toImmutableSortedSet, toImmutableSortedSetBy, toSortedBagBy, toSortedListBy, toSortedMapBy, toSortedSetBy
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Field Detail
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serialVersionUID
private static final long serialVersionUID
- See Also:
- Constant Field Values
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iterable
protected final RichIterable<T> iterable
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Constructor Detail
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UnmodifiableRichIterable
protected UnmodifiableRichIterable(RichIterable<T> richIterable)
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Method Detail
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of
public static <E,RI extends RichIterable<E>> UnmodifiableRichIterable<E> of(RI iterable)
This method will take a RichIterable and wrap it directly in a UnmodifiableRichIterable.
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select
public <R extends java.util.Collection<T>> R select(Predicate<? super T> predicate, R target)
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)
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selectWith
public <P> RichIterable<T> selectWith(Predicate2<? super T,? super P> predicate, P parameter)
Description copied from interface:RichIterable
Similar toRichIterable.select(Predicate)
, 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:
RichIterable<Person> selected = people.selectWith((Person person, Integer age) -> person.getAge()>= age, Integer.valueOf(18));
Example using an anonymous inner class:
RichIterable<Person> selected = people.selectWith(new Predicate2<Person, Integer>() { public boolean accept(Person person, Integer age) { return person.getAge()>= age; } }, Integer.valueOf(18));
- 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)
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selectWith
public <P,R extends java.util.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)
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reject
public <R extends java.util.Collection<T>> R reject(Predicate<? super T> predicate, R target)
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
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rejectWith
public <P> RichIterable<T> rejectWith(Predicate2<? super T,? super P> predicate, P parameter)
Description copied from interface:RichIterable
Similar toRichIterable.reject(Predicate)
, 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:
RichIterable<Person> rejected = people.rejectWith((Person person, Integer age) -> person.getAge() < age, Integer.valueOf(18));
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));
- 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 java.util.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)
-
partition
public PartitionIterable<T> partition(Predicate<? super T> predicate)
Description copied from interface:RichIterable
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"); } });
- Specified by:
partition
in interfaceRichIterable<T>
-
partitionWith
public <P> PartitionIterable<T> partitionWith(Predicate2<? super T,? super P> predicate, P parameter)
Description copied from interface:RichIterable
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");
- Specified by:
partitionWith
in interfaceRichIterable<T>
-
collect
public <V,R extends java.util.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)
-
collectWith
public <P,V> RichIterable<V> collectWith(Function2<? super T,? super P,? extends V> function, P parameter)
Description copied from interface:RichIterable
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));
- 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,V,R extends java.util.Collection<V>> R collectWith(Function2<? super T,? super P,? extends V> 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
-
collectIf
public <V,R extends java.util.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)
-
flatCollect
public <V,R extends java.util.Collection<V>> R flatCollect(Function<? super T,? extends java.lang.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)
-
contains
public boolean contains(java.lang.Object object)
Description copied from interface:RichIterable
Returns true if the iterable has an element which responds true to element.equals(object).- Specified by:
contains
in interfaceRichIterable<T>
-
containsAllIterable
public boolean containsAllIterable(java.lang.Iterable<?> source)
Description copied from interface:RichIterable
Returns true if all elements in source are contained in this collection.- Specified by:
containsAllIterable
in interfaceRichIterable<T>
-
containsAll
public boolean containsAll(java.util.Collection<?> source)
Description copied from interface:RichIterable
Returns true if all elements in source are contained in this collection.- Specified by:
containsAll
in interfaceRichIterable<T>
- See Also:
Collection.containsAll(Collection)
-
containsAllArguments
public boolean containsAllArguments(java.lang.Object... elements)
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>
-
toArray
public java.lang.Object[] toArray()
Description copied from interface:RichIterable
Converts this iterable to an array.- Specified by:
toArray
in interfaceRichIterable<T>
- See Also:
Collection.toArray()
-
toArray
public <T> T[] toArray(T[] 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 interfaceRichIterable<T>
- See Also:
Collection.toArray(Object[])
-
tap
public RichIterable<T> tap(Procedure<? super T> procedure)
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 interfaceRichIterable<T>
- See Also:
RichIterable.each(Procedure)
,RichIterable.forEach(Procedure)
-
each
public void each(Procedure<? super T> procedure)
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)
-
forEachWithIndex
public void forEachWithIndex(ObjectIntProcedure<? super T> objectIntProcedure)
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>
-
forEachWith
public <P> void forEachWith(Procedure2<? super T,? super P> procedure, P parameter)
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>
-
notEmpty
public boolean notEmpty()
Description copied from interface:RichIterable
The English equivalent of !this.isEmpty()- Specified by:
notEmpty
in interfaceRichIterable<T>
-
isEmpty
public boolean isEmpty()
Description copied from interface:RichIterable
Returns true if this iterable has zero items.- Specified by:
isEmpty
in interfaceRichIterable<T>
-
size
public int size()
Description copied from interface:RichIterable
Returns the number of items in this iterable.- Specified by:
size
in interfaceRichIterable<T>
-
getFirst
public T 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>
-
getLast
public T 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>
-
getOnly
public T 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.
-
select
public RichIterable<T> select(Predicate<? super T> predicate)
Description copied from interface:RichIterable
Returns all elements of the source collection that return true when evaluating the predicate. This method is also commonly called filter.Example using a Java 8 lambda expression:
RichIterable<Person> selected = people.select(person -> person.getAddress().getCity().equals("London"));
Example using an anonymous inner class:
RichIterable<Person> selected = people.select(new Predicate<Person>() { public boolean accept(Person person) { return person.getAddress().getCity().equals("London"); } });
- Specified by:
select
in interfaceRichIterable<T>
-
reject
public RichIterable<T> reject(Predicate<? super T> predicate)
Description copied from interface:RichIterable
Returns all elements of the source collection that return false when evaluating of the predicate. This method is also sometimes called filterNot and is the equivalent of calling iterable.select(Predicates.not(predicate)).Example using a Java 8 lambda expression:
RichIterable<Person> rejected = people.reject(person -> person.person.getLastName().equals("Smith"));
Example using an anonymous inner class:
RichIterable<Person> rejected = people.reject(new Predicate<Person>() { public boolean accept(Person person) { return person.person.getLastName().equals("Smith"); } });
- 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
-
selectInstancesOf
public <S> RichIterable<S> selectInstancesOf(java.lang.Class<S> clazz)
Description copied from interface:RichIterable
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);
- Specified by:
selectInstancesOf
in interfaceRichIterable<T>
-
collect
public <V> RichIterable<V> collect(Function<? super T,? extends V> function)
Description copied from interface:RichIterable
Returns a new collection 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:
RichIterable<String> names = people.collect(person -> person.getFirstName() + " " + person.getLastName());
Example using an anonymous inner class:
RichIterable<String> names = people.collect(new Function<Person, String>() { public String valueOf(Person person) { return person.getFirstName() + " " + person.getLastName(); } });
- Specified by:
collect
in interfaceRichIterable<T>
-
collectBoolean
public BooleanIterable collectBoolean(BooleanFunction<? super T> booleanFunction)
Description copied from interface:RichIterable
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(); } });
- 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
-
flatCollectBoolean
public <R extends MutableBooleanCollection> R flatCollectBoolean(Function<? super T,? extends BooleanIterable> function, R target)
Description copied from interface:RichIterable
Same as flatCollect, only the results are collected into the target collection.- Specified by:
flatCollectBoolean
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)
-
collectByte
public ByteIterable collectByte(ByteFunction<? super T> byteFunction)
Description copied from interface:RichIterable
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(); } });
- 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
-
flatCollectByte
public <R extends MutableByteCollection> R flatCollectByte(Function<? super T,? extends ByteIterable> function, R target)
Description copied from interface:RichIterable
Same as flatCollect, only the results are collected into the target collection.- Specified by:
flatCollectByte
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)
-
collectChar
public CharIterable collectChar(CharFunction<? super T> charFunction)
Description copied from interface:RichIterable
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(); } });
- 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
-
flatCollectChar
public <R extends MutableCharCollection> R flatCollectChar(Function<? super T,? extends CharIterable> function, R target)
Description copied from interface:RichIterable
Same as flatCollect, only the results are collected into the target collection.- Specified by:
flatCollectChar
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)
-
collectDouble
public DoubleIterable collectDouble(DoubleFunction<? super T> doubleFunction)
Description copied from interface:RichIterable
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(); } });
- 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
-
flatCollectDouble
public <R extends MutableDoubleCollection> R flatCollectDouble(Function<? super T,? extends DoubleIterable> function, R target)
Description copied from interface:RichIterable
Same as flatCollect, only the results are collected into the target collection.- Specified by:
flatCollectDouble
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)
-
collectFloat
public FloatIterable collectFloat(FloatFunction<? super T> floatFunction)
Description copied from interface:RichIterable
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(); } });
- 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
-
flatCollectFloat
public <R extends MutableFloatCollection> R flatCollectFloat(Function<? super T,? extends FloatIterable> function, R target)
Description copied from interface:RichIterable
Same as flatCollect, only the results are collected into the target collection.- Specified by:
flatCollectFloat
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)
-
collectInt
public IntIterable collectInt(IntFunction<? super T> intFunction)
Description copied from interface:RichIterable
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(); } });
- Specified by:
collectInt
in interfaceRichIterable<T>
-
collectInt
public <R extends MutableIntCollection> R collectInt(IntFunction<? super T> intFunction, R target)
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
-
flatCollectInt
public <R extends MutableIntCollection> R flatCollectInt(Function<? super T,? extends IntIterable> function, R target)
Description copied from interface:RichIterable
Same as flatCollect, only the results are collected into the target collection.- Specified by:
flatCollectInt
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)
-
collectLong
public LongIterable collectLong(LongFunction<? super T> longFunction)
Description copied from interface:RichIterable
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(); } });
- 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
-
flatCollectLong
public <R extends MutableLongCollection> R flatCollectLong(Function<? super T,? extends LongIterable> function, R target)
Description copied from interface:RichIterable
Same as flatCollect, only the results are collected into the target collection.- Specified by:
flatCollectLong
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)
-
collectShort
public ShortIterable collectShort(ShortFunction<? super T> shortFunction)
Description copied from interface:RichIterable
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(); } });
- 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
-
flatCollectShort
public <R extends MutableShortCollection> R flatCollectShort(Function<? super T,? extends ShortIterable> function, R target)
Description copied from interface:RichIterable
Same as flatCollect, only the results are collected into the target collection.- Specified by:
flatCollectShort
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)
-
flatCollect
public <V> RichIterable<V> flatCollect(Function<? super T,? extends java.lang.Iterable<V>> function)
Description copied from interface:RichIterable
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);
- Specified by:
flatCollect
in interfaceRichIterable<T>
- Parameters:
function
- TheFunction
to apply- Returns:
- a new flattened collection produced by applying the given
function
-
collectIf
public <V> RichIterable<V> collectIf(Predicate<? super T> predicate, Function<? super T,? extends V> function)
Description copied from interface:RichIterable
Returns a new collection with the results of applying the specified function on each element of the source collection, but only for those elements which return true upon evaluation of the predicate. This is the optimized equivalent of calling iterable.select(predicate).collect(function).Example using a Java 8 lambda and method reference:
RichIterable<String> strings = Lists.mutable.with(1, 2, 3).collectIf(e -> e != null, Object::toString);
Example using Predicates factory:
RichIterable<String> strings = Lists.mutable.with(1, 2, 3).collectIf(Predicates.notNull(), Functions.getToString());
- Specified by:
collectIf
in interfaceRichIterable<T>
-
detect
public T detect(Predicate<? super T> predicate)
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>
-
detectWith
public <P> T detectWith(Predicate2<? super T,? super P> predicate, P parameter)
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>
-
detectOptional
public java.util.Optional<T> detectOptional(Predicate<? super T> predicate)
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>
-
detectWithOptional
public <P> java.util.Optional<T> detectWithOptional(Predicate2<? super T,? super P> predicate, P parameter)
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>
-
detectIfNone
public T detectIfNone(Predicate<? super T> predicate, Function0<? extends T> function)
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>
-
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>
-
min
public T min(java.util.Comparator<? super T> comparator)
Description copied from interface:RichIterable
Returns the minimum element out of this container based on the comparator.- Specified by:
min
in interfaceRichIterable<T>
-
max
public T max(java.util.Comparator<? super T> comparator)
Description copied from interface:RichIterable
Returns the maximum element out of this container based on the comparator.- Specified by:
max
in interfaceRichIterable<T>
-
min
public T 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>
-
max
public T 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
public <V extends java.lang.Comparable<? super V>> T minBy(Function<? super T,? extends V> function)
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
public <V extends java.lang.Comparable<? super V>> T maxBy(Function<? super T,? extends V> function)
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
public int count(Predicate<? super T> predicate)
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>
-
countWith
public <P> int countWith(Predicate2<? super T,? super P> predicate, P parameter)
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>
-
anySatisfy
public boolean anySatisfy(Predicate<? super T> predicate)
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>
-
anySatisfyWith
public <P> boolean anySatisfyWith(Predicate2<? super T,? super P> predicate, P parameter)
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>
-
allSatisfy
public boolean allSatisfy(Predicate<? super T> predicate)
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>
-
allSatisfyWith
public <P> boolean allSatisfyWith(Predicate2<? super T,? super P> predicate, P parameter)
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>
-
noneSatisfy
public boolean noneSatisfy(Predicate<? super T> predicate)
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>
-
noneSatisfyWith
public <P> boolean noneSatisfyWith(Predicate2<? super T,? super P> predicate, P parameter)
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>
-
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
public int injectInto(int injectedValue, IntObjectToIntFunction<? super T> function)
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
public long injectInto(long injectedValue, LongObjectToLongFunction<? super T> function)
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
public double injectInto(double injectedValue, DoubleObjectToDoubleFunction<? super T> function)
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
public float injectInto(float injectedValue, FloatObjectToFloatFunction<? super T> function)
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
public long sumOfInt(IntFunction<? super T> function)
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
public double sumOfFloat(FloatFunction<? super T> function)
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
public long sumOfLong(LongFunction<? super T> function)
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
public double sumOfDouble(DoubleFunction<? super T> function)
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> ObjectLongMap<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 interfaceRichIterable<T>
-
sumByFloat
public <V> ObjectDoubleMap<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 interfaceRichIterable<T>
-
sumByLong
public <V> ObjectLongMap<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 interfaceRichIterable<T>
-
sumByDouble
public <V> ObjectDoubleMap<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 interfaceRichIterable<T>
-
into
public <R extends java.util.Collection<T>> R into(R target)
Description copied from interface:RichIterable
Adds all the elements in this iterable to the specific target Collection.- Specified by:
into
in interfaceRichIterable<T>
-
toList
public MutableList<T> toList()
Description copied from interface:RichIterable
Converts the collection to a MutableList implementation.- Specified by:
toList
in interfaceRichIterable<T>
-
toSortedList
public MutableList<T> toSortedList()
Description copied from interface:RichIterable
Converts the collection to a MutableList implementation and sorts it using the natural order of the elements.- Specified by:
toSortedList
in interfaceRichIterable<T>
-
toSortedList
public MutableList<T> toSortedList(java.util.Comparator<? super T> comparator)
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>
-
toSortedSet
public MutableSortedSet<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
public MutableSortedSet<T> toSortedSet(java.util.Comparator<? super T> comparator)
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>
-
toSet
public MutableSet<T> toSet()
Description copied from interface:RichIterable
Converts the collection to a MutableSet implementation.- Specified by:
toSet
in interfaceRichIterable<T>
-
toBag
public MutableBag<T> toBag()
Description copied from interface:RichIterable
Converts the collection to the default MutableBag implementation.- Specified by:
toBag
in interfaceRichIterable<T>
-
toSortedBag
public MutableSortedBag<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
public MutableSortedBag<T> toSortedBag(java.util.Comparator<? super T> comparator)
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>
-
toMap
public <NK,NV> MutableMap<NK,NV> toMap(Function<? super T,? extends NK> keyFunction, Function<? super T,? extends NV> 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 <NK,NV,R extends java.util.Map<NK,NV>> R toMap(Function<? super T,? extends NK> keyFunction, Function<? super T,? extends NV> 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 <NK,NV> MutableSortedMap<NK,NV> toSortedMap(Function<? super T,? extends NK> keyFunction, Function<? super T,? extends NV> 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 <NK,NV> MutableSortedMap<NK,NV> toSortedMap(java.util.Comparator<? super NK> comparator, Function<? super T,? extends NK> keyFunction, Function<? super T,? extends NV> 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>
-
toBiMap
public <NK,NV> MutableBiMap<NK,NV> toBiMap(Function<? super T,? extends NK> keyFunction, Function<? super T,? extends NV> 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
public LazyIterable<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>
-
iterator
public java.util.Iterator<T> iterator()
- Specified by:
iterator
in interfacejava.lang.Iterable<T>
-
toString
public java.lang.String 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 classjava.lang.Object
- Returns:
- a string representation of this RichIterable
- See Also:
AbstractCollection.toString()
-
makeString
public java.lang.String makeString()
Description copied from interface:RichIterable
Returns a string representation of this collection by delegating toRichIterable.makeString(String)
and defaulting the separator parameter to the characters", "
(comma and space).- Specified by:
makeString
in interfaceRichIterable<T>
- Returns:
- a string representation of this collection.
-
makeString
public java.lang.String makeString(java.lang.String separator)
Description copied from interface:RichIterable
Returns a string representation of this collection by delegating toRichIterable.makeString(String, String, String)
and defaulting the start and end parameters to""
(the empty String).- Specified by:
makeString
in interfaceRichIterable<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:RichIterable
Returns a string representation of this collection with the elements separated by the specified separator and enclosed between the start and end strings.- Specified by:
makeString
in interfaceRichIterable<T>
- Returns:
- a string representation of this collection.
-
appendString
public void appendString(java.lang.Appendable appendable)
Description copied from interface:RichIterable
Prints a string representation of this collection onto the givenAppendable
. Prints the string returned byRichIterable.makeString()
.- Specified by:
appendString
in interfaceRichIterable<T>
-
appendString
public void appendString(java.lang.Appendable appendable, java.lang.String separator)
Description copied from interface:RichIterable
Prints a string representation of this collection onto the givenAppendable
. Prints the string returned byRichIterable.makeString(String)
.- Specified by:
appendString
in interfaceRichIterable<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: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
public <V> Multimap<V,T> groupBy(Function<? super T,? extends V> function)
Description copied from interface:RichIterable
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(); } });
- 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
public <V> Multimap<V,T> groupByEach(Function<? super T,? extends java.lang.Iterable<V>> function)
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 interfaceRichIterable<T>
-
groupByEach
public <V,R extends MutableMultimap<V,T>> R groupByEach(Function<? super T,? extends java.lang.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
public <V> MapIterable<V,T> groupByUniqueKey(Function<? super T,? extends V> function)
Description copied from interface:RichIterable
For each element of the iterable, the function is evaluated, and the 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 interfaceRichIterable<T>
- See Also:
RichIterable.groupBy(Function)
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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)
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zip
public <S> RichIterable<Pair<T,S>> zip(java.lang.Iterable<S> that)
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 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.
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zip
public <S,R extends java.util.Collection<Pair<T,S>>> R zip(java.lang.Iterable<S> that, R target)
Description copied from interface:RichIterable
Same asRichIterable.zip(Iterable)
but usestarget
for output.- Specified by:
zip
in interfaceRichIterable<T>
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zipWithIndex
public RichIterable<Pair<T,java.lang.Integer>> zipWithIndex()
Description copied from interface:RichIterable
Zips thisRichIterable
with its indices.- 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)
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zipWithIndex
public <R extends java.util.Collection<Pair<T,java.lang.Integer>>> R zipWithIndex(R target)
Description copied from interface:RichIterable
Same asRichIterable.zipWithIndex()
but usestarget
for output.- Specified by:
zipWithIndex
in interfaceRichIterable<T>
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chunk
public RichIterable<RichIterable<T>> chunk(int size)
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.
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aggregateInPlaceBy
public <K,V> MapIterable<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 interfaceRichIterable<T>
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aggregateBy
public <K,V> MapIterable<K,V> aggregateBy(Function<? super T,? extends K> groupBy, Function0<? extends V> zeroValueFactory, Function2<? super V,? super T,? extends V> nonMutatingAggregator)
Description copied from interface: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. Integer.valueOf(0)).- Specified by:
aggregateBy
in interfaceRichIterable<T>
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