apply

1.56

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Description

Description:

Applies the given code to each element of the given data structure and collects the results in an array.

Groups:

ArraysHashMap

Syntax

Syntax:

array apply code

Parameters:

array: Array - Array of Anything

code: Code - Code to be executed on each element of the array. The current element value is stored in the magic variable _x.

Return Value:

Array - Resulting array

2.04

Alternative Syntax

Syntax:

hashmap apply code

Parameters:

hashmap: HashMap

code: Code - Code to be executed on each key-value pair of the hashmap. The current key is stored in the magic variable _x, the corresponding value is stored in _y.

Return Value:

Array - Resulting array

Examples

Example 1:

_arr = [1,2,3,4,5,6,7,8,9,0] apply {[1,0] select (_x % 2 == 0)}; // [1,0,1,0,1,0,1,0,1,0]

Example 2:

_arr = [1,2,3,4,5,6,7,8,9,0] apply {_x ^ _x}; // [1,4,27,256,3125,46656,823543,16777216,387420480,1]

Example 3:

_arr1 = []; _arr1 resize 20; _arr2 = _arr1 apply {0}; // [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]

Example 4:

[0,1,2,3,4] apply {str _x}; // ["0","1","2","3","4"]

Example 5:

_hashmap = createHashMapFromArray [["Key 1", "Value 1"], ["Key 2", "Value 2"]]; _array = _hashmap apply {_y + " Test"}; // ["Value 2 Test","Value 1 Test"]

Additional Information

See also:

set resize pushBack pushBackUnique select reverse count find in forEach deleteAt deleteRange append sort arrayIntersect

Notes

Report bugs on the Feedback Tracker and/or discuss them on the Arma Discord or on the Forums.
Only post proven facts here! Add Note

Posted on February 18, 2016 - 11:03 (UTC)

Fusselwurm

(to anyone else wondering, I took a minute to get it): This is Array.map() in JavaScript

Posted on February 11, 2018 - 23:02 (UTC)

Lou Montana

if performance really is an issue, apply seems to be (very) slightly faster than forEach (by more or less one percent, 0.7-1.5% in my tests to be precise).