Interface OrderedIterable<T>
- All Superinterfaces:
InternalIterable<T>
,Iterable<T>
,RichIterable<T>
- All Known Subinterfaces:
FixedSizeList<T>
,ImmutableList<T>
,ImmutableOrderedMap<K,
,V> ImmutableSortedBag<T>
,ImmutableSortedMap<K,
,V> ImmutableSortedSet<T>
,ImmutableStack<T>
,ListIterable<T>
,MultiReaderList<T>
,MutableList<T>
,MutableOrderedMap<K,
,V> MutableSortedBag<T>
,MutableSortedMap<K,
,V> MutableSortedSet<T>
,MutableStack<T>
,OrderedMap<K,
,V> ReversibleIterable<T>
,SortedBag<T>
,SortedIterable<T>
,SortedMapIterable<K,
,V> SortedSetIterable<T>
,StackIterable<T>
- All Known Implementing Classes:
AbstractArrayAdapter
,AbstractImmutableSortedMap
,AbstractListAdapter
,AbstractMemoryEfficientMutableList
,AbstractMutableList
,AbstractMutableSortedBag
,AbstractMutableSortedMap
,ArrayAdapter
,ArrayListAdapter
,ArrayStack
,CompositeFastList
,FastList
,ImmutableTreeMap
,ListAdapter
,MultiReaderFastList
,OrderedMapAdapter
,RandomAccessListAdapter
,SortedMapAdapter
,SortedSetAdapter
,SynchronizedMutableList
,SynchronizedSortedBag
,SynchronizedSortedMap
,SynchronizedSortedSet
,SynchronizedStack
,TreeBag
,TreeSortedMap
,TreeSortedSet
,UnmodifiableMutableList
,UnmodifiableMutableOrderedMap
,UnmodifiableSortedBag
,UnmodifiableSortedSet
,UnmodifiableStack
,UnmodifiableTreeMap
- Since:
- 6.0
-
Method Summary
Modifier and TypeMethodDescription<V> OrderedIterable<V>
Returns a new collection with the results of applying the specified function on each element of the source collection.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.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.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.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.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.<V> OrderedIterable<V>
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.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.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.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.<P,
V> OrderedIterable<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.default <V> OrderedIterable<V>
collectWithIndex
(ObjectIntToObjectFunction<? super T, ? extends V> function) Returns a new OrderedIterable using results obtained by applying the specified function to each element and its corresponding index.default <V,
R extends Collection<V>>
RcollectWithIndex
(ObjectIntToObjectFunction<? super T, ? extends V> function, R target) Adds elements to the target Collection using results obtained by applying the specified function to each element and its corresponding index.<S> boolean
corresponds
(OrderedIterable<S> other, Predicate2<? super T, ? super S> predicate) Returns true if both OrderedIterables have the same length andpredicate
returns true for all corresponding elements e1 of thisOrderedIterable
and e2 ofother
.int
detectIndex
(Predicate<? super T> predicate) Returns the index of the first element of theOrderedIterable
for which thepredicate
evaluates to true.distinct()
Returns a newOrderedIterable
containing the distinct elements in this iterable.Returns the final elements that do not satisfy the Predicate.<V> OrderedIterable<V>
flatCollect
(Function<? super T, ? extends Iterable<V>> function) flatCollect
is a special case ofRichIterable.collect(Function)
.default <P,
V> OrderedIterable<V> flatCollectWith
(Function2<? super T, ? super P, ? extends Iterable<V>> function, P parameter) void
Iterates over the section of the iterable covered by the specified inclusive indexes.void
forEachWithIndex
(int fromIndex, int toIndex, ObjectIntProcedure<? super T> objectIntProcedure) Iterates over the section of the iterable covered by the specified inclusive indexes.void
forEachWithIndex
(ObjectIntProcedure<? super T> objectIntProcedure) Iterates over the iterable passing each element and the current relative int index to the specified instance of ObjectIntProceduregetFirst()
Returns the first element of an iterable.Returns the first element of an iterable as an Optional.getLast()
Returns the last element of an iterable.Returns the last element of an iterable as an Optional.<V> OrderedIterableMultimap<V,
T> 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> OrderedIterableMultimap<V,
T> groupByEach
(Function<? super T, ? extends Iterable<V>> function) Similar toRichIterable.groupBy(Function)
, except the result of evaluating function will return a collection of keys for each value.int
Returns the index of the first occurrence of the specified item in this iterable, or -1 if this iterable does not contain the item.max()
Returns the maximum element out of this container based on the natural order, not the order of this container.min()
Returns the minimum element out of this container based on the natural order, not the order of this container.Filters a collection into a PartitionedIterable based on the evaluation of the predicate.partitionWhile
(Predicate<? super T> predicate) Returns a Partition of the initial elements that satisfy the Predicate and the remaining elements.partitionWith
(Predicate2<? super T, ? super P> predicate, P parameter) Filters a collection into a PartitionIterable based on the evaluation of the predicate.Returns all elements of the source collection that return false when evaluating of the predicate.<P> OrderedIterable<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
.default <R extends Collection<T>>
RrejectWithIndex
(ObjectIntPredicate<? super T> predicate, R target) Adds all elements to the target Collection that return false when evaluating the specified predicate which is supplied each element and its relative index.Returns all elements of the source collection that return true when evaluating the predicate.<S> OrderedIterable<S>
selectInstancesOf
(Class<S> clazz) Returns all elements of the source collection that are instances of the Classclazz
.<P> OrderedIterable<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
.default <R extends Collection<T>>
RselectWithIndex
(ObjectIntPredicate<? super T> predicate, R target) Adds all elements to the target Collection that return true when evaluating the specified predicate which is supplied each element and its relative index.Returns the initial elements that satisfy the Predicate.Executes the Procedure for each element in the iterable and returnsthis
.default MutableStack<T>
toStack()
Converts the OrderedIterable to a mutable MutableStack implementation.<S> OrderedIterable<Pair<T,
S>> Returns aOrderedIterable
formed from thisOrderedIterable
and anotherIterable
by combining corresponding elements in pairs.<S,
R extends Collection<Pair<T, S>>>
RSame aszip(Iterable)
but usestarget
for output.Zips thisRichIterable
with its indices.<R extends Collection<Pair<T,
Integer>>>
RzipWithIndex
(R target) Same aszipWithIndex()
but usestarget
for output.Methods inherited from interface org.eclipse.collections.api.InternalIterable
forEach, forEachWith
Methods inherited from interface java.lang.Iterable
iterator, spliterator
Methods inherited from interface org.eclipse.collections.api.RichIterable
aggregateBy, aggregateBy, aggregateInPlaceBy, allSatisfy, allSatisfyWith, anySatisfy, anySatisfyWith, appendString, appendString, appendString, asLazy, chunk, collect, collectBoolean, collectByte, collectChar, collectDouble, collectFloat, collectIf, collectInt, collectLong, collectShort, collectWith, contains, containsAll, containsAllArguments, containsAllIterable, containsAny, containsAnyIterable, containsBy, containsNone, containsNoneIterable, count, countBy, countBy, countByEach, countByEach, countByWith, countByWith, countWith, detect, detectIfNone, detectOptional, detectWith, detectWithIfNone, detectWithOptional, each, flatCollect, flatCollectBoolean, flatCollectByte, flatCollectChar, flatCollectDouble, flatCollectFloat, flatCollectInt, flatCollectLong, flatCollectShort, flatCollectWith, forEach, getAny, getOnly, groupBy, groupByAndCollect, groupByEach, groupByUniqueKey, groupByUniqueKey, injectInto, injectInto, injectInto, injectInto, injectInto, injectIntoDouble, injectIntoFloat, injectIntoInt, injectIntoLong, into, isEmpty, makeString, makeString, makeString, makeString, max, maxBy, maxByOptional, maxOptional, maxOptional, min, minBy, minByOptional, minOptional, minOptional, noneSatisfy, noneSatisfyWith, notEmpty, reduce, reduceInPlace, reduceInPlace, reject, rejectWith, select, selectWith, size, sumByDouble, sumByFloat, sumByInt, sumByLong, summarizeDouble, summarizeFloat, summarizeInt, summarizeLong, sumOfDouble, sumOfFloat, sumOfInt, sumOfLong, toArray, toArray, toBag, toBiMap, toImmutableBag, toImmutableBiMap, toImmutableList, toImmutableMap, toImmutableSet, toImmutableSortedBag, toImmutableSortedBag, toImmutableSortedBagBy, toImmutableSortedList, toImmutableSortedList, toImmutableSortedListBy, toImmutableSortedSet, toImmutableSortedSet, toImmutableSortedSetBy, toList, toMap, toMap, toSet, toSortedBag, toSortedBag, toSortedBagBy, toSortedList, toSortedList, toSortedListBy, toSortedMap, toSortedMap, toSortedMapBy, toSortedSet, toSortedSet, toSortedSetBy, toString
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Method Details
-
indexOf
Returns the index of the first occurrence of the specified item in this iterable, or -1 if this iterable does not contain the item.- See Also:
-
getFirst
T getFirst()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.- Specified by:
getFirst
in interfaceRichIterable<T>
-
getFirstOptional
Returns the first element of an iterable as an Optional. 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,Optional.empty()
is returned.- Throws:
NullPointerException
- if the element is null- Since:
- 8.2
-
getLast
T getLast()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.- Specified by:
getLast
in interfaceRichIterable<T>
-
getLastOptional
Returns the last element of an iterable as an Optional. 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,Optional.empty()
is returned.- Throws:
NullPointerException
- if the element is null- Since:
- 8.2
-
tap
Description copied from interface:RichIterable
Executes the Procedure for each element in the iterable and returnsthis
.Example using a Java 8 lambda expression:
RichIterable<Person> tapped = people.tap(person -> LOGGER.info(person.getName()));
Example using an anonymous inner class:
RichIterable<Person> tapped = people.tap(new Procedure<Person>() { public void value(Person person) { LOGGER.info(person.getName()); } });
- Specified by:
tap
in interfaceRichIterable<T>
- See Also:
-
takeWhile
Returns the initial elements that satisfy the Predicate. Short circuits at the first element which does not satisfy the Predicate. -
dropWhile
Returns the final elements that do not satisfy the Predicate. Short circuits at the first element which does satisfy the Predicate. -
partitionWhile
Returns a Partition of the initial elements that satisfy the Predicate and the remaining elements. Short circuits at the first element which does satisfy the Predicate. -
distinct
OrderedIterable<T> distinct()Returns a newOrderedIterable
containing the distinct elements in this iterable.Conceptually similar to
RichIterable.toSet()
.RichIterable.toList()
but retains the original order. If an element appears multiple times in this iterable, the first one will be copied into the result.- Returns:
OrderedIterable
of distinct elements
-
corresponds
Returns true if both OrderedIterables have the same length andpredicate
returns true for all corresponding elements e1 of thisOrderedIterable
and e2 ofother
. Thepredicate
is evaluated for each element at the same position of eachOrderedIterable
in a forward iteration order. This is a short circuit pattern.- Since:
- 6.0
-
forEach
Iterates over the section of the iterable covered by the specified inclusive indexes. The indexes are both inclusive.e.g. OrderedIterable<People> people = FastList.newListWith(ted, mary, bob, sally) people.forEach(0, 1, new Procedure<Person>() { public void value(Person person) { LOGGER.info(person.getName()); } });
This code would output ted and mary's names.
-
forEachWithIndex
Iterates over the iterable passing each element and the current relative int index to the specified instance of ObjectIntProceduree.g. 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>
-
forEachWithIndex
Iterates over the section of the iterable covered by the specified inclusive indexes. The indexes are both inclusive.e.g. OrderedIterable<People> people = FastList.newListWith(ted, mary, bob, sally) people.forEachWithIndex(0, 1, new ObjectIntProcedure<Person>() { public void value(Person person, int index) { LOGGER.info(person.getName()); } });
This code would output ted and mary's names.
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toStack
Converts the OrderedIterable to a mutable MutableStack implementation. -
min
T min()Returns the minimum element out of this container based on the natural order, not the order of this container. If you want the minimum element based on the order of this container, usegetFirst()
.- Specified by:
min
in interfaceRichIterable<T>
- Throws:
ClassCastException
- if the elements are notComparable
NoSuchElementException
- if the OrderedIterable is empty
-
max
T max()Returns the maximum element out of this container based on the natural order, not the order of this container. If you want the maximum element based on the order of this container, usegetLast()
.- Specified by:
max
in interfaceRichIterable<T>
- Throws:
ClassCastException
- if the elements are notComparable
NoSuchElementException
- if the OrderedIterable is empty
-
select
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>
-
selectWith
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:
-
reject
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
-
rejectWith
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:
-
partition
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
<P> PartitionOrderedIterable<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>
-
selectInstancesOf
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
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>
-
collectWithIndex
default <V> OrderedIterable<V> collectWithIndex(ObjectIntToObjectFunction<? super T, ? extends V> function) Returns a new OrderedIterable using results obtained by applying the specified function to each element and its corresponding index.- Since:
- 9.1.
-
collectWithIndex
default <V,R extends Collection<V>> R collectWithIndex(ObjectIntToObjectFunction<? super T, ? extends V> function, R target) Adds elements to the target Collection using results obtained by applying the specified function to each element and its corresponding index.- Since:
- 9.1.
-
selectWithIndex
default <R extends Collection<T>> R selectWithIndex(ObjectIntPredicate<? super T> predicate, R target) Adds all elements to the target Collection that return true when evaluating the specified predicate which is supplied each element and its relative index.- Since:
- 11.0
-
rejectWithIndex
default <R extends Collection<T>> R rejectWithIndex(ObjectIntPredicate<? super T> predicate, R target) Adds all elements to the target Collection that return false when evaluating the specified predicate which is supplied each element and its relative index.- Since:
- 11.0
-
collectWith
<P,V> OrderedIterable<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:
-
collectIf
<V> OrderedIterable<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>
-
flatCollect
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
-
flatCollectWith
default <P,V> OrderedIterable<V> flatCollectWith(Function2<? super T, ? super P, ? extends Iterable<V>> function, P parameter) - Specified by:
flatCollectWith
in interfaceRichIterable<T>
- Since:
- 9.2
-
collectBoolean
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>
-
collectByte
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>
-
collectChar
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>
-
collectDouble
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>
-
collectFloat
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>
-
collectInt
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>
-
collectLong
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>
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collectShort
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>
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detectIndex
Returns the index of the first element of theOrderedIterable
for which thepredicate
evaluates to true. Returns -1 if no element evaluates true for thepredicate
.- Since:
- 6.0
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groupBy
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>
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groupByEach
Description copied from interface:RichIterable
Similar toRichIterable.groupBy(Function)
, except the result of evaluating function will return a collection of keys for each value.- Specified by:
groupByEach
in interfaceRichIterable<T>
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zip
Returns aOrderedIterable
formed from thisOrderedIterable
and anotherIterable
by combining corresponding elements in pairs. The secondIterable
should also be ordered. If one of the twoIterable
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
- TheIterable
providing the second half of each result pair- Returns:
- A new
OrderedIterable
containing pairs consisting of corresponding elements of thisOrderedIterable
and that. The length of the returnedOrderedIterable
is the minimum of the lengths of thisOrderedIterable
and that.
-
zip
Same aszip(Iterable)
but usestarget
for output.- Specified by:
zip
in interfaceRichIterable<T>
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zipWithIndex
OrderedIterable<Pair<T,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:
-
zipWithIndex
Same aszipWithIndex()
but usestarget
for output.- Specified by:
zipWithIndex
in interfaceRichIterable<T>
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