append: Difference between revisions

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The larger the arrays to append, the faster [[append]] is as it does not create a new array, which happens with array addition.
The larger the arrays to append, the faster [[append]] is as it does not create a new array, which happens with array addition.
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<dd class="notedate">Posted on May 21, 2015 - 10:27 (UTC)</dd>
<dt class="note">[[User:Killzone Kid|Killzone Kid]]</dt>
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Array "unshift" implementation using [[append]], alternative to [[BIS_fnc_arrayUnShift]]
<code>KK_fnc_unshift <nowiki>=</nowiki> {
[[private]] ["_arr", "_tmp"];
_arr <nowiki>=</nowiki> _this [[select]] 0;
_tmp <nowiki>=</nowiki> [_this [[select]] 1];
_tmp [[append]] _arr;
_arr [[resize]] 0;
_arr [[append]] _tmp;
_arr
};</code>
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Revision as of 11:27, 21 May 2015

Hover & click on the images for description

Description

Description:
Appends array2 to the back of array1 modifying array1.
Groups:
Uncategorised

Syntax

Syntax:
array1 append array2
Parameters:
array1: Array
array2: Array
Return Value:
Nothing

Examples

Example 1:
_arr = [1,2,3]; _arr append [4,5,6]; hint str _arr; //[1,2,3,4,5,6]

Additional Information

See also:
setpushBackresizereversecountfindinforEachdeleteAtdeleteRangesortBIS_fnc_arrayPushStackBIS_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
Posted on March 9, 2015 - 00:41 (UTC)
Heeeere's Johnny!
_array1 append _array2 is roughly 1.2x faster (depending on array size) than _array1 = _array1 + _array2(Averaged over 10.000 iterations with two identical arrays containing the numbers 0 through 9)
The larger the arrays to append, the faster append is as it does not create a new array, which happens with array addition.
Posted on May 21, 2015 - 10:27 (UTC)
Killzone Kid
Array "unshift" implementation using append, alternative to BIS_fnc_arrayUnShift KK_fnc_unshift = { private ["_arr", "_tmp"]; _arr = _this select 0; _tmp = [_this select 1]; _tmp append _arr; _arr resize 0; _arr append _tmp; _arr };