arrayIntersect

1.48

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Description

Description:

Intersects two arrays returning an array of unique common elements, avoiding nil values. Using the same array as both parameters will return unique elements of that array. Intersects only the first dimension of said arrays.

ⓘ

From Arma 3 v 2.14 the order of the intersected elements would follow 'array1' order

Groups:

Arrays

Syntax

Syntax:

array1 arrayIntersect array2

Parameters:

array1: Array

array2: Array

Return Value:

Array

Examples

Example 1:

_arr1 = [1,2,3,4,5,2,3,4]; _arr2 = [4,5,6,1,2,3,5,6]; hint str (_arr1 arrayIntersect _arr2); // [4,5,1,2,3]

Example 2:

_arr = [1,2,3,1,2,3,1,2,3,4,5]; hint str (_arr arrayIntersect _arr); // [1,2,3,4,5]

Example 3:

Remove nils:

hint str ([1,2,nil,3] arrayIntersect [1,2,nil,3]); // [1,2,3]

Example 4:

Also works with array elements which are equal:

hint str ([[1],[2],[3]] arrayIntersect [[2],[3],[4]]); // [[2],[3]]

Example 5:

This command is case-sensitive:

["cAse"] arrayIntersect ["cAse"]; // ["cAse"] ["cAse"] arrayIntersect ["casE"]; // []

Additional Information

See also:

append set pushBack pushBackUnique apply select resize reverse count find in forEach deleteAt deleteRange sort param params toArray toString splitString joinString BIS_fnc_arrayPushStack BIS_fnc_arrayPush

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

Hypoxic125 - c

Posted on May 26, 2024 - 16:50 (UTC)

Selectively filter out elements from _arrayA based on _arrayB.

• Designed to remove the first occurrence of each element found in _arrayB from _arrayA.
• Useful in removing elements where duplicates may exist.

private _arrayA = [1,2,3,2,4,5,4]; private _arrayB = [2,2,4]; { private _element = _x; private _index = _arrayA find _element; if (_index != -1) then { _arrayA deleteAt _index; }; } forEachReversed _arrayB _arrayA // Returns [1,3,5,4]