org.openzen.zengarden.util

Class ZArrays

java.lang.Object

org.openzen.zengarden.util.ZArrays

public class ZArrays
extends java.lang.Object

Array utility functions. Contains stuff that I believe should have been in java.util.Arrays.

Method Summary

Modifier and Type	Method and Description
static <T> T[]	filter(T[] array, java.util.function.Predicate<T> predicate) Creates a new array containing only the values matching the given predicate.
static <T> int	indexOf(T[] array, T value) Find the first index of the given object in the array.
static <T> int	lastIndexOf(T[] array, T value) Find the last index of the given object in the array.
static <T,R> R[]	map(java.lang.Class<R> component, T[] array, Function<T,R> function) Creates a new array, converting each value of the original value using the mapping function.

Methods inherited from class java.lang.Object

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

Method Detail

indexOf

public static <T> int indexOf(T[] array,
                              T value)

Find the first index of the given object in the array.

Type Parameters:

T - object type

Parameters:

array - haystack

value - needle

Returns:

first index of the needle, or -1 if not found

lastIndexOf

public static <T> int lastIndexOf(T[] array,
                                  T value)

Find the last index of the given object in the array.

Type Parameters:

T - object type

Parameters:

array - haystack

value - needle

Returns:

last index of the needle, or -1 if not found

map

public static <T,R> R[] map(java.lang.Class<R> component,
                            T[] array,
                            Function<T,R> function)

Creates a new array, converting each value of the original value using the mapping function.

Type Parameters:

T - original component type

R - resulting component type

Parameters:

component - component class

array - original array

function - mapping function

Returns:

mapped array

filter

public static <T> T[] filter(T[] array,
                             java.util.function.Predicate<T> predicate)

Creates a new array containing only the values matching the given predicate.

Type Parameters:

T - component type

Parameters:

array - original array

predicate - predicate

Returns:

filtered array