manifold.collections.extensions.java.lang.Iterable

Class ManIterableExt

java.lang.Object

manifold.collections.extensions.java.lang.Iterable.ManIterableExt

public class ManIterableExt
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
ManIterableExt()

Method Summary

Modifier and Type	Method and Description
static <T> int	count(java.lang.Iterable<T> thiz) Returns the number of elements in thiz collection.
static <T> int	count(java.lang.Iterable<T> thiz, java.util.function.Predicate<T> predicate) Returns the number of elements matching the given predicate.
static <T,K> java.util.List<T>	distinctBy(java.lang.Iterable<T> thiz, java.util.function.Function<T,K> selector) Returns a list containing only elements from the given collection having distinct keys returned by the given selector function.
static <T> java.util.List<T>	distinctList(java.lang.Iterable<T> thiz) Returns a list containing only distinct elements from the given collection.
static <T,C extends java.util.Collection<? super T>> C	filterIndexedTo(java.lang.Iterable<T> thiz, C destination, IndexedPredicate<T> predicate) Appends all elements matching the given predicate to the given destination.
static <T> java.util.List<T>	filterIndexedToList(java.lang.Iterable<T> thiz, IndexedPredicate<T> predicate) Returns a list containing only elements matching the given predicate.
static <T,C extends java.util.Collection<? super T>> C	filterNotTo(java.lang.Iterable<T> thiz, C destination, java.util.function.Predicate<T> predicate) Appends all elements not matching the given predicate to the given destination.
static <T> java.util.List<T>	filterNotToList(java.lang.Iterable<T> thiz, java.util.function.Predicate<T> predicate) Returns a list containing all elements not matching the given predicate.
static <T,C extends java.util.Collection<? super T>> C	filterTo(java.lang.Iterable<T> thiz, C destination, java.util.function.Predicate<T> predicate) Appends all elements matching the given predicate to the given destination.
static <T> java.util.List<T>	filterToList(java.lang.Iterable<T> thiz, java.util.function.Predicate<T> predicate) Returns a list containing all elements matching the given predicate.
static <T> T	first(java.lang.Iterable<T> thiz) Returns first element.
static <T> T	first(java.lang.Iterable<T> thiz, java.util.function.Predicate<T> predicate) Returns the first element matching the given predicate.
static <T> T	firstOrNull(java.lang.Iterable<T> thiz) Returns the first element, or null if the collection is empty.
static <T> T	firstOrNull(java.lang.Iterable<T> thiz, java.util.function.Predicate<T> predicate) Returns the first element matching the given predicate, or null if element was not found.
static <T,R> java.util.List<R>	flatMap(java.lang.Iterable<T> thiz, java.util.function.Function<T,java.lang.Iterable<R>> transform) Returns a single list of all elements yielded from results of transform function being invoked on each element of original collection.
static <T,R,C extends java.util.Collection<R>> C	flatMapTo(java.lang.Iterable<T> thiz, C destination, java.util.function.Function<T,java.lang.Iterable<R>> transform) Appends all elements yielded from results of transform function being invoked on each element of original collection, to the given destination.
static <T,R> R	fold(java.lang.Iterable<T> thiz, R initial, java.util.function.BiFunction<R,T,R> operation) Accumulates value starting with demo value and applying operation from left to right to current accumulator value and each element.
static <T> void	forEachIndexed(java.lang.Iterable<T> thiz, IndexedConsumer<T> action) Performs the given action on each element, providing sequential index with the element.
static <T> int	indexOfFirst(java.lang.Iterable<T> thiz, java.util.function.Predicate<T> predicate) Returns index of the first element matching the given predicate, or -1 if the collection does not contain such element.
static <T> int	indexOfLast(java.lang.Iterable<T> thiz, java.util.function.Predicate<T> predicate) Returns index of the last element matching the given predicate, or -1 if the collection does not contain such element.
static <T> java.util.Set<T>	intersect(java.lang.Iterable<T> thiz, java.lang.Iterable<T> other) Returns a set containing all elements that are contained by both thiz set and the specified collection.
static <T,A extends java.lang.Appendable> A	joinTo(java.lang.Iterable<T> thiz, A buffer, java.lang.CharSequence separator) Append the elements to buffer separated by separator.
static <T> java.lang.String	joinToString(java.lang.Iterable<T> thiz, java.lang.CharSequence separator) Join the elements together in a String separated by separator.
static <T> T	last(java.lang.Iterable<T> thiz) Returns the last element.
static <T> T	last(java.lang.Iterable<T> thiz, java.util.function.Predicate<T> predicate) Returns the last element matching the given predicate.
static <T> T	lastOrNull(java.lang.Iterable<T> thiz) Returns the last element, or null if the collection is empty.
static <T> T	lastOrNull(java.lang.Iterable<T> thiz, java.util.function.Predicate<T> predicate) Returns the last element matching the given predicate, or null if no such element was found.
static <T,R> java.util.List<R>	mapIndexed(java.lang.Iterable<T> thiz, IndexedFunction<T,R> transform) Returns a list containing the results of applying the given transform function to each element and its index in the original collection.
static <T,R> java.util.List<R>	mapIndexedNotNull(java.lang.Iterable<T> thiz, IndexedFunction<T,R> transform) Returns a list containing only the non-null results of applying the given transform function to each element and its index in the original collection.
static <T,R,C extends java.util.Collection<? super R>> C	mapIndexedNotNullTo(java.lang.Iterable<T> thiz, C destination, IndexedFunction<T,R> transform) Applies the given transform function to each element and its index in the original collection and appends only the non-null results to the given destination.
static <T,R,C extends java.util.Collection<? super R>> C	mapIndexedTo(java.lang.Iterable<T> thiz, C destination, IndexedFunction<T,R> transform) Applies the given transform function to each element and its index in the original collection and appends the results to the given destination.
static <T,R> java.util.List<R>	mapNotNull(java.lang.Iterable<T> thiz, java.util.function.Function<T,R> transform) Returns a list containing only the non-null results of applying the given transform function to each element in the original collection.
static <T,R,C extends java.util.Collection<? super R>> C	mapNotNullTo(java.lang.Iterable<T> thiz, C destination, java.util.function.Function<T,R> transform) Applies the given transform function to each element in the original collection and appends only the non-null results to the given destination.
static <T,R,C extends java.util.Collection<? super R>> C	mapTo(java.lang.Iterable<T> thiz, C destination, java.util.function.Function<T,R> transform) Applies the given transform function to each element of the original collection and appends the results to the given destination.
static <T,R> java.util.List<R>	mapToList(java.lang.Iterable<T> thiz, java.util.function.Function<T,R> transform) Returns a list containing the results of applying the given transform function to each element in the original collection.
static <T> T	maxWith(java.lang.Iterable<T> thiz, java.util.Comparator<T> comparator) Returns the first element having the largest value according to the provided comparator or null if there are no elements.
static <T> T	minWith(java.lang.Iterable<T> thiz, java.util.Comparator<T> comparator) Returns the first element having the smallest value according to the provided comparator or null if there are no elements.
static <T> manifold.rt.api.util.Pair<java.util.List<T>,java.util.List<T>>	partition(java.lang.Iterable<T> thiz, java.util.function.Predicate<T> predicate) Splits the original collection into pair of lists, where first list contains elements for which predicate yielded true, while second list contains elements for which predicate yielded false.
static <T> java.util.List<T>	reversed(java.lang.Iterable<T> thiz) Returns a list with elements in reversed order.
static <T> T	single(java.lang.Iterable<T> thiz) Returns the single element, or throws an exception if the collection is empty or has more than one element.
static <T> T	single(java.lang.Iterable<T> thiz, java.util.function.Predicate<T> predicate) Returns the single element matching the given predicate, or throws exception if there is no or more than one matching element.
static <T> T	singleOrNull(java.lang.Iterable<T> thiz) Returns single element, or null if the collection is empty or has more than one element.
static <T> T	singleOrNull(java.lang.Iterable<T> thiz, java.util.function.Predicate<T> predicate) Returns the single element matching the given predicate, or null if element was not found or more than one element was found.
static <T> java.util.List<T>	subList(java.lang.Iterable<T> thiz, int fromIndex) Returns a list containing all the elmeents from fromIndex (inclusive)
static <T> java.util.List<T>	subList(java.lang.Iterable<T> thiz, int fromIndex, int toIndex) Returns a list containing the elmeents fromIndex (inclusive) to toIndex (exclusive)
static <T> java.util.Set<T>	subtract(java.lang.Iterable<T> thiz, java.lang.Iterable<T> other) Returns a set containing all elements that are contained by thiz collection and not contained by the specified collection.
static <T> java.util.List<T>	toList(java.lang.Iterable<T> thiz) Returns a List containing all elements.
static <T> java.util.Set<T>	toSet(java.lang.Iterable<T> thiz) Returns a Set containing all unique elements.
static <T> java.util.Set<T>	union(java.lang.Iterable<T> thiz, java.lang.Iterable<T> other) Returns a set containing all distinct elements from both collections.

Methods inherited from class java.lang.Object

clone, emptyArray, equals, finalize, getClass, hashCode, jailbreak, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ManIterableExt

public ManIterableExt()

Method Detail

first

public static <T> T first(java.lang.Iterable<T> thiz)

Returns first element.

Throws:

java.util.NoSuchElementException - if the collection is empty.

first

public static <T> T first(java.lang.Iterable<T> thiz,
                          java.util.function.Predicate<T> predicate)

Returns the first element matching the given predicate.

Throws:

{@code - NoSuchElementException} if no such element is found.

indexOfFirst

public static <T> int indexOfFirst(java.lang.Iterable<T> thiz,
                                   java.util.function.Predicate<T> predicate)

Returns index of the first element matching the given predicate, or -1 if the collection does not contain such element.

firstOrNull

public static <T> T firstOrNull(java.lang.Iterable<T> thiz)

Returns the first element, or null if the collection is empty.

firstOrNull

public static <T> T firstOrNull(java.lang.Iterable<T> thiz,
                                java.util.function.Predicate<T> predicate)

Returns the first element matching the given predicate, or null if element was not found.

last

public static <T> T last(java.lang.Iterable<T> thiz)

Returns the last element.

Throws:

java.util.NoSuchElementException - if the collection is empty.

last

public static <T> T last(java.lang.Iterable<T> thiz,
                         java.util.function.Predicate<T> predicate)

Returns the last element matching the given predicate.

Throws:

java.util.NoSuchElementException - if no such element is found.

indexOfLast

public static <T> int indexOfLast(java.lang.Iterable<T> thiz,
                                  java.util.function.Predicate<T> predicate)

Returns index of the last element matching the given predicate, or -1 if the collection does not contain such element.

lastOrNull

public static <T> T lastOrNull(java.lang.Iterable<T> thiz)

Returns the last element, or null if the collection is empty.

lastOrNull

public static <T> T lastOrNull(java.lang.Iterable<T> thiz,
                               java.util.function.Predicate<T> predicate)

Returns the last element matching the given predicate, or null if no such element was found.

single

public static <T> T single(java.lang.Iterable<T> thiz)

Returns the single element, or throws an exception if the collection is empty or has more than one element.

single

public static <T> T single(java.lang.Iterable<T> thiz,
                           java.util.function.Predicate<T> predicate)

Returns the single element matching the given predicate, or throws exception if there is no or more than one matching element.

singleOrNull

public static <T> T singleOrNull(java.lang.Iterable<T> thiz)

Returns single element, or null if the collection is empty or has more than one element.

singleOrNull

public static <T> T singleOrNull(java.lang.Iterable<T> thiz,
                                 java.util.function.Predicate<T> predicate)

Returns the single element matching the given predicate, or null if element was not found or more than one element was found.

filterToList

public static <T> java.util.List<T> filterToList(java.lang.Iterable<T> thiz,
                                                 java.util.function.Predicate<T> predicate)

Returns a list containing all elements matching the given predicate.

filterTo

public static <T,C extends java.util.Collection<? super T>> C filterTo(java.lang.Iterable<T> thiz,
                                                                       C destination,
                                                                       java.util.function.Predicate<T> predicate)

Appends all elements matching the given predicate to the given destination.

filterIndexedToList

public static <T> java.util.List<T> filterIndexedToList(java.lang.Iterable<T> thiz,
                                                        IndexedPredicate<T> predicate)

Returns a list containing only elements matching the given predicate.

Parameters:

predicate - function that takes the index of an element and the element itself and returns the result of predicate evaluation on the element.

filterIndexedTo

public static <T,C extends java.util.Collection<? super T>> C filterIndexedTo(java.lang.Iterable<T> thiz,
                                                                              C destination,
                                                                              IndexedPredicate<T> predicate)

Appends all elements matching the given predicate to the given destination.

Parameters:

predicate - function that takes the index of an element and the element itself and returns the result of predicate evaluation on the element.

filterNotToList

public static <T> java.util.List<T> filterNotToList(java.lang.Iterable<T> thiz,
                                                    java.util.function.Predicate<T> predicate)

Returns a list containing all elements not matching the given predicate.

filterNotTo

public static <T,C extends java.util.Collection<? super T>> C filterNotTo(java.lang.Iterable<T> thiz,
                                                                          C destination,
                                                                          java.util.function.Predicate<T> predicate)

Appends all elements not matching the given predicate to the given destination.

reversed

public static <T> java.util.List<T> reversed(java.lang.Iterable<T> thiz)

Returns a list with elements in reversed order.

toList

public static <T> java.util.List<T> toList(java.lang.Iterable<T> thiz)

Returns a List containing all elements.

toSet

public static <T> java.util.Set<T> toSet(java.lang.Iterable<T> thiz)

Returns a Set containing all unique elements.

The returned set preserves the element iteration order of the original collection.

flatMap

public static <T,R> java.util.List<R> flatMap(java.lang.Iterable<T> thiz,
                                              java.util.function.Function<T,java.lang.Iterable<R>> transform)

Returns a single list of all elements yielded from results of transform function being invoked on each element of original collection.

flatMapTo

public static <T,R,C extends java.util.Collection<R>> C flatMapTo(java.lang.Iterable<T> thiz,
                                                                  C destination,
                                                                  java.util.function.Function<T,java.lang.Iterable<R>> transform)

Appends all elements yielded from results of transform function being invoked on each element of original collection, to the given destination.

distinctList

public static <T> java.util.List<T> distinctList(java.lang.Iterable<T> thiz)

Returns a list containing only distinct elements from the given collection.

The elements in the resulting list are in the same order as they were in the source collection.

distinctBy

public static <T,K> java.util.List<T> distinctBy(java.lang.Iterable<T> thiz,
                                                 java.util.function.Function<T,K> selector)

Returns a list containing only elements from the given collection having distinct keys returned by the given selector function.

The elements in the resulting list are in the same order as they were in the source collection.

intersect

public static <T> java.util.Set<T> intersect(java.lang.Iterable<T> thiz,
                                             java.lang.Iterable<T> other)

Returns a set containing all elements that are contained by both thiz set and the specified collection.

The returned set preserves the element iteration order of the original collection.

subtract

public static <T> java.util.Set<T> subtract(java.lang.Iterable<T> thiz,
                                            java.lang.Iterable<T> other)

Returns a set containing all elements that are contained by thiz collection and not contained by the specified collection.

The returned set preserves the element iteration order of the original collection.

union

public static <T> java.util.Set<T> union(java.lang.Iterable<T> thiz,
                                         java.lang.Iterable<T> other)

Returns a set containing all distinct elements from both collections.

The returned set preserves the element iteration order of the original collection. Those elements of the other collection that are unique are iterated in the end in the order of the other collection.

count

public static <T> int count(java.lang.Iterable<T> thiz)

Returns the number of elements in thiz collection.

count

public static <T> int count(java.lang.Iterable<T> thiz,
                            java.util.function.Predicate<T> predicate)

Returns the number of elements matching the given predicate.

maxWith

public static <T> T maxWith(java.lang.Iterable<T> thiz,
                            java.util.Comparator<T> comparator)

Returns the first element having the largest value according to the provided comparator or null if there are no elements.

minWith

public static <T> T minWith(java.lang.Iterable<T> thiz,
                            java.util.Comparator<T> comparator)

Returns the first element having the smallest value according to the provided comparator or null if there are no elements.

partition

public static <T> manifold.rt.api.util.Pair<java.util.List<T>,java.util.List<T>> partition(java.lang.Iterable<T> thiz,
                                                                                           java.util.function.Predicate<T> predicate)

Splits the original collection into pair of lists, where first list contains elements for which predicate yielded true, while second list contains elements for which predicate yielded false.

mapToList

public static <T,R> java.util.List<R> mapToList(java.lang.Iterable<T> thiz,
                                                java.util.function.Function<T,R> transform)

Returns a list containing the results of applying the given transform function to each element in the original collection.

mapIndexed

public static <T,R> java.util.List<R> mapIndexed(java.lang.Iterable<T> thiz,
                                                 IndexedFunction<T,R> transform)

Returns a list containing the results of applying the given transform function to each element and its index in the original collection.

Parameters:

transform - function that takes the index of an element and the element itself and returns the result of the transform applied to the element.

mapIndexedNotNull

public static <T,R> java.util.List<R> mapIndexedNotNull(java.lang.Iterable<T> thiz,
                                                        IndexedFunction<T,R> transform)

Returns a list containing only the non-null results of applying the given transform function to each element and its index in the original collection.

Parameters:

transform - function that takes the index of an element and the element itself and returns the result of the transform applied to the element.

mapIndexedNotNullTo

public static <T,R,C extends java.util.Collection<? super R>> C mapIndexedNotNullTo(java.lang.Iterable<T> thiz,
                                                                                    C destination,
                                                                                    IndexedFunction<T,R> transform)

Applies the given transform function to each element and its index in the original collection and appends only the non-null results to the given destination.

Parameters:

transform - function that takes the index of an element and the element itself and returns the result of the transform applied to the element.

mapIndexedTo

public static <T,R,C extends java.util.Collection<? super R>> C mapIndexedTo(java.lang.Iterable<T> thiz,
                                                                             C destination,
                                                                             IndexedFunction<T,R> transform)

Applies the given transform function to each element and its index in the original collection and appends the results to the given destination.

Parameters:

transform - function that takes the index of an element and the element itself and returns the result of the transform applied to the element.

mapNotNull

public static <T,R> java.util.List<R> mapNotNull(java.lang.Iterable<T> thiz,
                                                 java.util.function.Function<T,R> transform)

Returns a list containing only the non-null results of applying the given transform function to each element in the original collection.

mapNotNullTo

public static <T,R,C extends java.util.Collection<? super R>> C mapNotNullTo(java.lang.Iterable<T> thiz,
                                                                             C destination,
                                                                             java.util.function.Function<T,R> transform)

Applies the given transform function to each element in the original collection and appends only the non-null results to the given destination.

mapTo

public static <T,R,C extends java.util.Collection<? super R>> C mapTo(java.lang.Iterable<T> thiz,
                                                                      C destination,
                                                                      java.util.function.Function<T,R> transform)

Applies the given transform function to each element of the original collection and appends the results to the given destination.

subList

public static <T> java.util.List<T> subList(java.lang.Iterable<T> thiz,
                                            int fromIndex)

Returns a list containing all the elmeents from fromIndex (inclusive)

subList

public static <T> java.util.List<T> subList(java.lang.Iterable<T> thiz,
                                            int fromIndex,
                                            int toIndex)

Returns a list containing the elmeents fromIndex (inclusive) to toIndex (exclusive)

forEachIndexed

public static <T> void forEachIndexed(java.lang.Iterable<T> thiz,
                                      IndexedConsumer<T> action)

Performs the given action on each element, providing sequential index with the element.

Parameters:

action - function that takes the index of an element and the element itself and performs the desired action on the element.

joinToString

public static <T> java.lang.String joinToString(java.lang.Iterable<T> thiz,
                                                java.lang.CharSequence separator)

Join the elements together in a String separated by separator.

joinTo

public static <T,A extends java.lang.Appendable> A joinTo(java.lang.Iterable<T> thiz,
                                                          A buffer,
                                                          java.lang.CharSequence separator)

Append the elements to buffer separated by separator.

fold

public static <T,R> R fold(java.lang.Iterable<T> thiz,
                           R initial,
                           java.util.function.BiFunction<R,T,R> operation)

Accumulates value starting with demo value and applying operation from left to right to current accumulator value and each element.

The operation is terminal.