manifold.collections.extensions.java.util.List

Class ManifoldListCollectionExt

java.lang.Object

manifold.collections.extensions.java.util.List.ManifoldListCollectionExt

public class ManifoldListCollectionExt
extends Object

Constructor Summary

Constructors

Constructor and Description
ManifoldListCollectionExt()

Method Summary

Modifier and Type	Method and Description
static <E> E	first(List<E> thiz) Returns first element.
static <E> E	firstOrNull(List<E> thiz) Returns the first element, or null if the list is empty.
static <E> E	getOrNull(List<E> thiz, int index) Returns an element at the given index or null if the index is out of bounds of this list.
static <E> E	last(List<E> thiz) Returns the last element.
static <E> E	last(List<E> thiz, java.util.function.Predicate<E> predicate) Returns the last element matching the given predicate.
static <E> E	lastOrNull(List<E> thiz) Returns the last element, or null if the list is empty.
static <E> E	lastOrNull(List<E> thiz, java.util.function.Predicate<E> predicate) Returns the last element matching the given predicate, or null if no such element was found.
static <E> List<E>	optimizeReadOnlyList(List<E> thiz)
static <E> void	reverse(List<E> thiz) Reverses elements in the list in-place.
static <E> E	single(List<E> thiz) Returns the single element, or throws an exception if the list is empty or has more than one element.
static <E> E	singleOrNull(List<E> thiz) Returns single element, or null if the list is empty or has more than one element.

Methods inherited from class java.lang.Object

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

Constructor Detail

ManifoldListCollectionExt

public ManifoldListCollectionExt()

Method Detail

first

public static <E> E first(List<E> thiz)

Returns first element.

Throws:

NoSuchElementException - if the list is empty.

firstOrNull

public static <E> E firstOrNull(List<E> thiz)

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

last

public static <E> E last(List<E> thiz)

Returns the last element.

Throws:

NoSuchElementException - if the list is empty.

last

public static <E> E last(List<E> thiz,
                         java.util.function.Predicate<E> predicate)

Returns the last element matching the given predicate.

Throws:

NoSuchElementException - if no such element is found.

lastOrNull

public static <E> E lastOrNull(List<E> thiz)

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

lastOrNull

public static <E> E lastOrNull(List<E> thiz,
                               java.util.function.Predicate<E> predicate)

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

single

public static <E> E single(List<E> thiz)

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

singleOrNull

public static <E> E singleOrNull(List<E> thiz)

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

getOrNull

public static <E> E getOrNull(List<E> thiz,
                              int index)

Returns an element at the given index or null if the index is out of bounds of this list.

reverse

public static <E> void reverse(List<E> thiz)

Reverses elements in the list in-place.

optimizeReadOnlyList

public static <E> List<E> optimizeReadOnlyList(List<E> thiz)