com.alibaba.testable.core.tool

Class CollectionTool

java.lang.Object

com.alibaba.testable.core.tool.CollectionTool

public class CollectionTool
extends Object

Constructor Summary

Constructors

Constructor and Description
CollectionTool()

Method Summary

Modifier and Type	Method and Description
static <T> T[]	arrayOf(T... items) Create an array
static <K,V> Map.Entry<K,V>	entryOf(K key, V value) Create a map entry
static <T> List<T>	fastListOf(T... items) Create an immutable list
static <T> List<T>	listOf(T... items) Create a mutable list
static <K,V> Map<K,V>	mapOf(Map.Entry<K,V>... entry) Create a mutable map
static <K,V> Map<K,V>	orderedMapOf(Map.Entry<K,V>... entry) Create an mutable ordered map
static <T> Set<T>	setOf(T... items) Create a mutable set
static <T> T[]	slice(T[] args, int startPos) Get slice of args[startPos, args.length]
static <T> T[]	slice(T[] args, int startPos, int endPos) Get slice of args[startPos, endPos]

Methods inherited from class java.lang.Object

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

Constructor Detail

CollectionTool

public CollectionTool()

Method Detail

slice

public static <T> T[] slice(T[] args,
                            int startPos)

Get slice of args[startPos, args.length]

Parameters:

args - original item array

startPos - index of the first item to keep

Returns:

a new array with sliced items

slice

public static <T> T[] slice(T[] args,
                            int startPos,
                            int endPos)

Get slice of args[startPos, endPos]

Parameters:

args - original item array

startPos - index of the first item to keep

endPos - index of the last item to keep

Returns:

a new array with sliced items

arrayOf

public static <T> T[] arrayOf(T... items)

Create an array

Parameters:

items - elements to add

Returns:

array of the provided items

fastListOf

public static <T> List<T> fastListOf(T... items)

Create an immutable list

Parameters:

items - elements to add

Returns:

list of the provided items

listOf

public static <T> List<T> listOf(T... items)

Create a mutable list

Parameters:

items - elements to add

Returns:

list of the provided items

setOf

public static <T> Set<T> setOf(T... items)

Create a mutable set

Parameters:

items - elements to add

Returns:

set of the provided items

mapOf

public static <K,V> Map<K,V> mapOf(Map.Entry<K,V>... entry)

Create a mutable map

Parameters:

entry - elements to add

Returns:

map of the provided items

orderedMapOf

public static <K,V> Map<K,V> orderedMapOf(Map.Entry<K,V>... entry)

Create an mutable ordered map

Parameters:

entry - elements to add

Returns:

ordered map of the provided items

entryOf

public static <K,V> Map.Entry<K,V> entryOf(K key,
                                           V value)

Create a map entry

Parameters:

key - the key

value - the value

Returns:

entry of provided key and value