isEqualTo

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Description

Description:
Performs strict comparison between var1 and var2 and returns true if equal, otherwise false. Strict means that it would check that both arguments are of the same data type and then compare the values.

Some differences between isEqualTo and ==:
A compiled code is not equal to the same compiled code made final:
_a = compile "123"; _b = compileFinal "123"; _a isEqualTo _b; // false
When comparing Arrays, if an array contains nil element, the comparison will return false. For example:

private _array1 = [1, nil, 2]; private _array2 = [1, nil, 2]; _array1 isEqualTo _array2; // false
UNLESS the compared arrays are the same array:
private _array1 = [1, nil, 2]; private _array2 = _array1; _array1 isEqualTo _array2; // true

See: isEqualRef and BIS_fnc_areEqual vs BIS_fnc_areEqualNotNil
Groups:
Variables

Syntax

Syntax:
val1 isEqualTo val2
Parameters:
val1: Anything
val2: Anything
Return Value:
Boolean

Examples

Example 1:
_arr1 = [1, [2, [3]]]; _arr2 = [1, [2, [3]]]; if (_arr1 isEqualTo _arr2) then { hint "Arrays match!" };
Example 2:
if (a isEqualTo b) then { hint "a is equal to b" }; if !(a isEqualTo b) then { hint "a is not equal to b" };

Additional Information

See also:
isNotEqualTo isEqualRef isEqualTypeAll isEqualTypeAny isEqualType isEqualTypeParams isEqualTypeArray a == b Operators

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
Tajin
Date unknown
Simply put, "isEqualTo" is a binary comparison. Therefor it is very fast but only accepts 100% identical matches. In some other languages this is known as "===" instead of "==".
Dedmen
Date unknown
When comparing with nil result is Nothing.
nil isEqualTo player;
Returns Nothing instead of expected false
diag_log [nil isEqualTo player];
Will print [bool]