OrderedIterable (Eclipse Collections

All Superinterfaces:

InternalIterable<T>, java.lang.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>, 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, RandomAccessListAdapter, SortedMapAdapter, SortedSetAdapter, SynchronizedMutableList, SynchronizedSortedBag, SynchronizedSortedMap, SynchronizedSortedSet, SynchronizedStack, TreeBag, TreeSortedMap, TreeSortedSet, UnmodifiableMutableList, UnmodifiableSortedBag, UnmodifiableSortedSet, UnmodifiableStack, UnmodifiableTreeMap
```
public interface OrderedIterable<T>
extends RichIterable<T>
```
An OrderedIterable is a RichIterable with some meaningful order, such as insertion order, access order, or sorted order.

Since:

6.0

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`<V> OrderedIterable<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.
`OrderedBooleanIterable`	`collectBoolean(BooleanFunction<? super T> booleanFunction)`	Returns a new primitive `boolean` iterable with the results of applying the specified function on each element of the source collection.
`OrderedByteIterable`	`collectByte(ByteFunction<? super T> byteFunction)`	Returns a new primitive `byte` iterable with the results of applying the specified function on each element of the source collection.
`OrderedCharIterable`	`collectChar(CharFunction<? super T> charFunction)`	Returns a new primitive `char` iterable with the results of applying the specified function on each element of the source collection.
`OrderedDoubleIterable`	`collectDouble(DoubleFunction<? super T> doubleFunction)`	Returns a new primitive `double` iterable with the results of applying the specified function on each element of the source collection.
`OrderedFloatIterable`	`collectFloat(FloatFunction<? super T> floatFunction)`	Returns a new primitive `float` iterable with the results of applying the specified function on each element of the source collection.
`<V> OrderedIterable<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.
`OrderedIntIterable`	`collectInt(IntFunction<? super T> intFunction)`	Returns a new primitive `int` iterable with the results of applying the specified function on each element of the source collection.
`OrderedLongIterable`	`collectLong(LongFunction<? super T> longFunction)`	Returns a new primitive `long` iterable with the results of applying the specified function on each element of the source collection.
`OrderedShortIterable`	`collectShort(ShortFunction<? super T> shortFunction)`	Returns a new primitive `short` iterable with the results of applying the specified function on each element of the source collection.
`<P,V> OrderedIterable<V>`	`collectWith(Function2<? super T,? super P,? extends V> function, P parameter)`	Same as `RichIterable.collect(Function)` with a `Function2` 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 java.util.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.
`<S> boolean`	`corresponds(OrderedIterable<S> other, Predicate2<? super T,? super S> predicate)`	Returns true if both OrderedIterables have the same length and `predicate` returns true for all corresponding elements e1 of this `OrderedIterable` and e2 of `other`.
`int`	`detectIndex(Predicate<? super T> predicate)`	Returns the index of the first element of the `OrderedIterable` for which the `predicate` evaluates to true.
`OrderedIterable<T>`	`distinct()`	Returns a new `OrderedIterable` containing the distinct elements in this iterable.
`OrderedIterable<T>`	`dropWhile(Predicate<? super T> predicate)`	Returns the final elements that do not satisfy the Predicate.
`<V> OrderedIterable<V>`	`flatCollect(Function<? super T,? extends java.lang.Iterable<V>> function)`	`flatCollect` is a special case of `RichIterable.collect(Function)`.
`void`	`forEach(int startIndex, int endIndex, Procedure<? super T> procedure)`	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 ObjectIntProcedure
`T`	`getFirst()`	Returns the first element of an iterable.
`default java.util.Optional<T>`	`getFirstOptional()`	Returns the first element of an iterable as an Optional.
`T`	`getLast()`	Returns the last element of an iterable.
`default java.util.Optional<T>`	`getLastOptional()`	Returns the last element of an iterable as an Optional.
`<V> OrderedIterableMultimap<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> OrderedIterableMultimap<V,T>`	`groupByEach(Function<? super T,? extends java.lang.Iterable<V>> function)`	Similar to `RichIterable.groupBy(Function)`, except the result of evaluating function will return a collection of keys for each value.
`int`	`indexOf(java.lang.Object object)`	Returns the index of the first occurrence of the specified item in this iterable, or -1 if this iterable does not contain the item.
`T`	`max()`	Returns the maximum element out of this container based on the natural order, not the order of this container.
`T`	`min()`	Returns the minimum element out of this container based on the natural order, not the order of this container.
`PartitionOrderedIterable<T>`	`partition(Predicate<? super T> predicate)`	Filters a collection into a PartitionedIterable based on the evaluation of the predicate.
`PartitionOrderedIterable<T>`	`partitionWhile(Predicate<? super T> predicate)`	Returns a Partition of the initial elements that satisfy the Predicate and the remaining elements.
`<P> PartitionOrderedIterable<T>`	`partitionWith(Predicate2<? super T,? super P> predicate, P parameter)`	Filters a collection into a PartitionIterable based on the evaluation of the predicate.
`OrderedIterable<T>`	`reject(Predicate<? super T> 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 to `RichIterable.reject(Predicate)`, except with an evaluation parameter for the second generic argument in `Predicate2`.
`OrderedIterable<T>`	`select(Predicate<? super T> predicate)`	Returns all elements of the source collection that return true when evaluating the predicate.
`<S> OrderedIterable<S>`	`selectInstancesOf(java.lang.Class<S> clazz)`	Returns all elements of the source collection that are instances of the Class `clazz`.
`<P> OrderedIterable<T>`	`selectWith(Predicate2<? super T,? super P> predicate, P parameter)`	Similar to `RichIterable.select(Predicate)`, except with an evaluation parameter for the second generic argument in `Predicate2`.
`OrderedIterable<T>`	`takeWhile(Predicate<? super T> predicate)`	Returns the initial elements that satisfy the Predicate.
`OrderedIterable<T>`	`tap(Procedure<? super T> procedure)`	Executes the Procedure for each element in the iterable and returns `this`.
`MutableStack<T>`	`toStack()`	Converts the OrderedIterable to a mutable MutableStack implementation.
`<S> OrderedIterable<Pair<T,S>>`	`zip(java.lang.Iterable<S> that)`	Returns a `OrderedIterable` formed from this `OrderedIterable` and another `Iterable` by combining corresponding elements in pairs.
`<S,R extends java.util.Collection<Pair<T,S>>> R`	`zip(java.lang.Iterable<S> that, R target)`	Same as `zip(Iterable)` but uses `target` for output.
`OrderedIterable<Pair<T,java.lang.Integer>>`	`zipWithIndex()`	Zips this `RichIterable` with its indices.
`<R extends java.util.Collection<Pair<T,java.lang.Integer>>> R`	`zipWithIndex(R target)`	Same as `zipWithIndex()` but uses `target` for output.

Methods inherited from interface org.eclipse.collections.api.InternalIterable
forEach, forEach, forEachWith

Methods inherited from interface java.lang.Iterable
iterator, spliterator

Methods inherited from interface org.eclipse.collections.api.RichIterable
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, count, countBy, countBy, countByWith, countByWith, countWith, detect, detectIfNone, detectOptional, detectWith, detectWithIfNone, detectWithOptional, each, flatCollect, getOnly, groupBy, groupByEach, groupByUniqueKey, groupByUniqueKey, injectInto, injectInto, injectInto, injectInto, injectInto, into, isEmpty, 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, toList, toMap, toSet, toSortedBag, toSortedBag, toSortedBagBy, toSortedList, toSortedList, toSortedListBy, toSortedMap, toSortedMap, toSortedSet, toSortedSet, toSortedSetBy, toString

- Method Detail
  - indexOf
```
int indexOf(java.lang.Object object)
```
    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:
    
    List.indexOf(Object)
  - 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 interface RichIterable<T>
  - getFirstOptional
```
default java.util.Optional<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:
    
    java.lang.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 interface RichIterable<T>
  - getLastOptional
```
default java.util.Optional<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:
    
    java.lang.NullPointerException - if the element is null
    
    Since:
    
    8.2
  - tap
```
OrderedIterable<T> tap(Procedure<? super T> procedure)
```
    Description copied from interface: RichIterable
    Executes the Procedure for each element in the iterable and returns this.
    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 interface RichIterable<T>
    
    See Also:
    
    RichIterable.each(Procedure), InternalIterable.forEach(Procedure)
  - takeWhile
```
OrderedIterable<T> takeWhile(Predicate<? super T> predicate)
```
    Returns the initial elements that satisfy the Predicate. Short circuits at the first element which does not satisfy the Predicate.
  - dropWhile
```
OrderedIterable<T> dropWhile(Predicate<? super T> predicate)
```
    Returns the final elements that do not satisfy the Predicate. Short circuits at the first element which does satisfy the Predicate.
  - partitionWhile
```
PartitionOrderedIterable<T> partitionWhile(Predicate<? super T> predicate)
```
    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 new OrderedIterable 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
```
<S> boolean corresponds(OrderedIterable<S> other,
                        Predicate2<? super T,? super S> predicate)
```
    Returns true if both OrderedIterables have the same length and predicate returns true for all corresponding elements e1 of this OrderedIterable and e2 of other. The predicate is evaluated for each element at the same position of each OrderedIterable in a forward iteration order. This is a short circuit pattern.
    
    Since:
    
    6.0
  - forEach
```
void forEach(int startIndex,
             int endIndex,
             Procedure<? super T> procedure)
```
    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
```
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
```
e.g.
 people.forEachWithIndex(new ObjectIntProcedure<Person>()
 {
     public void value(Person person, int index)
     {
         LOGGER.info("Index: " + index + " person: " + person.getName());
     }
 });
 
```
    Specified by:
    
    forEachWithIndex in interface InternalIterable<T>
  - forEachWithIndex
```
void forEachWithIndex(int fromIndex,
                      int toIndex,
                      ObjectIntProcedure<? super T> objectIntProcedure)
```
    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.
  - toStack
```
MutableStack<T> 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, use getFirst().
    
    Specified by:
    
    min in interface RichIterable<T>
    
    Throws:
    
    java.lang.ClassCastException - if the elements are not Comparable
    
    java.util.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, use getLast().
    
    Specified by:
    
    max in interface RichIterable<T>
    
    Throws:
    
    java.lang.ClassCastException - if the elements are not Comparable
    
    java.util.NoSuchElementException - if the OrderedIterable is empty
  - select
```
OrderedIterable<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 interface RichIterable<T>
  - selectWith
```
<P> OrderedIterable<T> selectWith(Predicate2<? super T,? super P> predicate,
                                  P parameter)
```
    Description copied from interface: RichIterable
    Similar to RichIterable.select(Predicate), except with an evaluation parameter for the second generic argument in Predicate2.
    E.g. return a Collection of Person elements where the person has an age greater than or equal to 18 years
    Example 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 interface RichIterable<T>
    
    Parameters:
    
    predicate - a Predicate2 to use as the select criteria
    
    parameter - a parameter to pass in for evaluation of the second argument P in predicate
    
    See Also:
    
    RichIterable.select(Predicate)
  - reject
```
OrderedIterable<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 interface RichIterable<T>
    
    Parameters:
    
    predicate - a Predicate to use as the reject criteria
    
    Returns:
    
    a RichIterable that contains elements that cause Predicate.accept(Object) method to evaluate to false
  - rejectWith
```
<P> OrderedIterable<T> rejectWith(Predicate2<? super T,? super P> predicate,
                                  P parameter)
```
    Description copied from interface: RichIterable
    Similar to RichIterable.reject(Predicate), except with an evaluation parameter for the second generic argument in Predicate2.
    E.g. return a Collection of Person elements where the person has an age greater than or equal to 18 years
    Example 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 interface RichIterable<T>
    
    Parameters:
    
    predicate - a Predicate2 to use as the select criteria
    
    parameter - a parameter to pass in for evaluation of the second argument P in predicate
    
    See Also:
    
    RichIterable.select(Predicate)
  - partition
```
PartitionOrderedIterable<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 interface RichIterable<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 interface RichIterable<T>
  - selectInstancesOf
```
<S> OrderedIterable<S> selectInstancesOf(java.lang.Class<S> clazz)
```
    Description copied from interface: RichIterable
    Returns all elements of the source collection that are instances of the Class clazz.
```
 RichIterable<Integer> integers =
     List.mutable.with(new Integer(0), new Long(0L), new Double(0.0)).selectInstancesOf(Integer.class);
 
```
    Specified by:
    
    selectInstancesOf in interface RichIterable<T>
  - collect
```
<V> OrderedIterable<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 interface RichIterable<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 java.util.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.
  - collectWith
```
<P,V> OrderedIterable<V> collectWith(Function2<? super T,? super P,? extends V> function,
                                     P parameter)
```
    Description copied from interface: RichIterable
    Same as RichIterable.collect(Function) with a Function2 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 interface RichIterable<T>
    
    Parameters:
    
    function - A Function2 to use as the collect transformation function
    
    parameter - A parameter to pass in for evaluation of the second argument P in function
    
    Returns:
    
    A new RichIterable that contains the transformed elements returned by Function2.value(Object, Object)
    
    See Also:
    
    RichIterable.collect(Function)
  - 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 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 interface RichIterable<T>
  - flatCollect
```
<V> OrderedIterable<V> flatCollect(Function<? super T,? extends java.lang.Iterable<V>> function)
```
    Description copied from interface: RichIterable
    flatCollect is a special case of RichIterable.collect(Function). With collect, when the Function 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 each Person has a list of Address objects. Take the following Function:
```
 Function<Person, List<Address>> addressFunction = Person::getAddresses;
 RichIterable<Person> people = ...;
 
```
    Using collect returns a collection of collections of addresses.
```
 RichIterable<List<Address>> addresses = people.collect(addressFunction);
 
```
    Using flatCollect returns a single flattened list of addresses.
```
 RichIterable<Address> addresses = people.flatCollect(addressFunction);
 
```
    Specified by:
    
    flatCollect in interface RichIterable<T>
    
    Parameters:
    
    function - The Function to apply
    
    Returns:
    
    a new flattened collection produced by applying the given function
  - collectBoolean
```
OrderedBooleanIterable collectBoolean(BooleanFunction<? super T> booleanFunction)
```
    Description copied from interface: RichIterable
    Returns a new primitive boolean iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.
    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 interface RichIterable<T>
  - collectByte
```
OrderedByteIterable collectByte(ByteFunction<? super T> byteFunction)
```
    Description copied from interface: RichIterable
    Returns a new primitive byte iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.
    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 interface RichIterable<T>
  - collectChar
```
OrderedCharIterable collectChar(CharFunction<? super T> charFunction)
```
    Description copied from interface: RichIterable
    Returns a new primitive char iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.
    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 interface RichIterable<T>
  - collectDouble
```
OrderedDoubleIterable collectDouble(DoubleFunction<? super T> doubleFunction)
```
    Description copied from interface: RichIterable
    Returns a new primitive double iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.
    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 interface RichIterable<T>
  - collectFloat
```
OrderedFloatIterable collectFloat(FloatFunction<? super T> floatFunction)
```
    Description copied from interface: RichIterable
    Returns a new primitive float iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.
    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 interface RichIterable<T>
  - collectInt
```
OrderedIntIterable collectInt(IntFunction<? super T> intFunction)
```
    Description copied from interface: RichIterable
    Returns a new primitive int iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.
    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 interface RichIterable<T>
  - collectLong
```
OrderedLongIterable collectLong(LongFunction<? super T> longFunction)
```
    Description copied from interface: RichIterable
    Returns a new primitive long iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.
    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 interface RichIterable<T>
  - collectShort
```
OrderedShortIterable collectShort(ShortFunction<? super T> shortFunction)
```
    Description copied from interface: RichIterable
    Returns a new primitive short iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.
    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 interface RichIterable<T>
  - detectIndex
```
int detectIndex(Predicate<? super T> predicate)
```
    Returns the index of the first element of the OrderedIterable for which the predicate evaluates to true. Returns -1 if no element evaluates true for the predicate.
    
    Since:
    
    6.0
  - groupBy
```
<V> OrderedIterableMultimap<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 interface RichIterable<T>
  - groupByEach
```
<V> OrderedIterableMultimap<V,T> groupByEach(Function<? super T,? extends java.lang.Iterable<V>> function)
```
    Description copied from interface: RichIterable
    
    Similar to RichIterable.groupBy(Function), except the result of evaluating function will return a collection of keys for each value.
    
    Specified by:
    
    groupByEach in interface RichIterable<T>
  - zip
```
<S> OrderedIterable<Pair<T,S>> zip(java.lang.Iterable<S> that)
```
    Returns a OrderedIterable formed from this OrderedIterable and another Iterable by combining corresponding elements in pairs. The second Iterable should also be ordered. If one of the two Iterables is longer than the other, its remaining elements are ignored.
    
    Specified by:
    
    zip in interface RichIterable<T>
    
    Type Parameters:
    
    S - the type of the second half of the returned pairs
    
    Parameters:
    
    that - The Iterable providing the second half of each result pair
    
    Returns:
    
    A new OrderedIterable containing pairs consisting of corresponding elements of this OrderedIterable and that. The length of the returned OrderedIterable is the minimum of the lengths of this OrderedIterable and that.
  - zip
```
<S,R extends java.util.Collection<Pair<T,S>>> R zip(java.lang.Iterable<S> that,
                                                    R target)
```
    Same as zip(Iterable) but uses target for output.
    
    Specified by:
    
    zip in interface RichIterable<T>
  - zipWithIndex
```
OrderedIterable<Pair<T,java.lang.Integer>> zipWithIndex()
```
    Description copied from interface: RichIterable
    
    Zips this RichIterable with its indices.
    
    Specified by:
    
    zipWithIndex in interface RichIterable<T>
    
    Returns:
    
    A new RichIterable containing pairs consisting of all elements of this RichIterable paired with their index. Indices start at 0.
    
    See Also:
    
    RichIterable.zip(Iterable)
  - zipWithIndex
```
<R extends java.util.Collection<Pair<T,java.lang.Integer>>> R zipWithIndex(R target)
```
    Same as zipWithIndex() but uses target for output.
    
    Specified by:
    
    zipWithIndex in interface RichIterable<T>

Interface OrderedIterable<T>

Method Summary

Methods inherited from interface org.eclipse.collections.api.InternalIterable

Methods inherited from interface java.lang.Iterable

Methods inherited from interface org.eclipse.collections.api.RichIterable

Method Detail

indexOf

getFirst

getFirstOptional

getLast

getLastOptional

tap

takeWhile

dropWhile

partitionWhile

distinct

corresponds

forEach

forEachWithIndex

forEachWithIndex

toStack

min

max

select

selectWith

reject

rejectWith

partition

partitionWith

selectInstancesOf

collect

collectWithIndex

collectWithIndex

collectWith

collectIf

flatCollect

collectBoolean

collectByte

collectChar

collectDouble

collectFloat

collectInt

collectLong

collectShort

detectIndex

groupBy

groupByEach

zip

zip

zipWithIndex

zipWithIndex