a - b: Difference between revisions

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This will work if you do: <code>[[3,3,3],[1,1,1],[5,5,5]] - [[1,1,1] ]</code>
This will work if you do: <code>[[3,3,3],[1,1,1],[5,5,5]] - [[1,1,1] ] //Return: [[3,3,3],[5,5,5]]</code>
You have to cover it in extra brackets, because you want to remove the whole element.
You have to cover it in extra brackets, because you want to remove the whole element.
Not: <code>[[3,3,3],[1,1,1],[5,5,5]] - [1,1,1]</code>
Not: <code>[[3,3,3],[1,1,1],[5,5,5]] - [1,1,1] //Return: [[3,3,3],[1,1,1],[5,5,5]]</code>
But this would work again: <code>[[3,3,3],-1,-1,-1],[5,5,5]] - [1,1,1]</code>
But this would work again: <code>[[3,3,3],-1,-1,-1],[5,5,5]] - [1,1,1] //Return: [[3,3,3],[5,5,5]]</code>
Note, that all elements found will be removed: <code>[1,2,3,2,4,3,5,2,6,2,7,2] - [2] //Return: [1,3,4,5,6,7]</code>
Note, that all elements found will be removed: <code>[1,2,3,2,4,3,5,2,6,2,7,2] - [2] //Return: [1,3,4,5,6,7]</code>

Revision as of 19:27, 15 August 2016

Hover & click on the images for description

Description

Description:
For numbers: a minus b.
Groups:
Uncategorised

Syntax

Syntax:
a - b
Parameters:
a: Number or Array
b: Number or Array
Return Value:
Number or Array

Examples

Example 1:
Number
_sum = 10 - 7
Result: _sum is 3
Example 2:
For arrays: Contents of array b removed from array a.
Array
_result = [1,2,2,player,"String"] - [2,player,player,"String"]
_result is [1]

Additional Information

See also:
ArrayOperators

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

Notes

Note that this way of removing elements from an array will not work if those elements are themselves arrays. Example: [[0,0,0],[1,1,1],[2,2,2] ] - [1,1,1] Will not remove the element [1,1,1] from the first array. A more practical example: [ getPos unit1, getPos unit2, getPos unit3] - getPos unit3 Will not remove the position of unit3 from the first array.

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This will work if you do: [[3,3,3],[1,1,1],[5,5,5]] - [[1,1,1] ] //Return: [[3,3,3],[5,5,5]] You have to cover it in extra brackets, because you want to remove the whole element. Not: [[3,3,3],[1,1,1],[5,5,5]] - [1,1,1] //Return: [[3,3,3],[1,1,1],[5,5,5]] But this would work again: [[3,3,3],-1,-1,-1],[5,5,5]] - [1,1,1] //Return: [[3,3,3],[5,5,5]] Note, that all elements found will be removed: [1,2,3,2,4,3,5,2,6,2,7,2] - [2] //Return: [1,3,4,5,6,7]