a == b: Difference between revisions

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m (Text replacement - "<code>([^ ]*)\[\[([a-zA-Z0-9_]+)\]\]([^ ]*)<\/code>" to "<code>$1$2$3</code>")
m (Text replacement - "<code>([^ ]*)\[\[([a-zA-Z0-9_]+)\]\]([^ ]*)<\/code>" to "<code>$1$2$3</code>")
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|x2= <code>"MyRabbit" [[a == b|==]] "MYRABBIT"; {{cc|returns true}}</code>
|x2= <code>"MyRabbit" [[a == b|==]] "MYRABBIT"; {{cc|returns true}}</code>


|x3= <code>if (alive _unit1 [[a == b|==]] [[alive]] _unit2) [[then]] { [[hint]] "Both units are either dead or both alive" };</code>
|x3= <code>if (alive _unit1 [[a == b|==]] alive _unit2) [[then]] { [[hint]] "Both units are either dead or both alive" };</code>


|seealso= [[a != b|!=]] [[Operators]] [[isEqualTo]]
|seealso= [[a != b|!=]] [[Operators]] [[isEqualTo]]
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<dd class="note">
<dd class="note">
For script comparison we need to detect whether scripts are running in advance, then compose both into string:
For script comparison we need to detect whether scripts are running in advance, then compose both into string:
<code>if (scriptDone _var0) [[then]] [{[[false]]},{([[str]] _var0) == ([[str]] _var1)}];</code>
<code>if (scriptDone _var0) then [{[[false]]},{([[str]] _var0) == ([[str]] _var1)}];</code>
   
   
It is recommended to use [[isEqualTo]] for all types comparison, which is more functional and as fast as operator.
It is recommended to use [[isEqualTo]] for all types comparison, which is more functional and as fast as operator.

Revision as of 11:02, 12 May 2022

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Hover & click on the images for description

Description

Description:
Check if a is equal to b. String comparison is case-insensitive - use isEqualTo if case sensitivity is needed.
⚠
a and b types must match: comparing e.g String with Number is invalid.
Groups:
MathVariables

Syntax

Syntax:
a == b
Parameters:
a:
Introduced in Logo A0.png1.00 Logo A1 black.png1.00 Logo A1 black.png1.08 Arma 3 logo black.png2.00
Possible Type Number Side String Object Group Structured Text Config Display Control Location Diary Record Namespace Boolean
b: identical to a's type
Return Value:
Boolean

Examples

Example 1:
if (player == leader group player) then { hint "You are the leader of your group."; } else { hint "Someone else is the boss"; };
Example 2:
"MyRabbit" == "MYRABBIT"; // returns true
Example 3:
if (alive _unit1 == alive _unit2) then { hint "Both units are either dead or both alive" };

Additional Information

See also:
!= Operators isEqualTo

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 Apr 15, 2014 - 15:34
ffur2007slx2_5
For script comparison we need to detect whether scripts are running in advance, then compose both into string: if (scriptDone _var0) then [{false},{(str _var0) == (str _var1)}]; It is recommended to use isEqualTo for all types comparison, which is more functional and as fast as operator. For multiple comparisons: fnc_areEqual = { private ["_b", "_var1", "_var2"]; _b = true; for [{ _i = 1 }, { _i < (count _this) && _b }, { _i=_i + 1 }] do { _var1 = _this select (_i-1); _var2 = _this select _i; if (!(_var1 isEqualTo _var2)) then { _b = false; }; }; _b }; ["A","a","a"] call fnc_areEqual; // false And we can use such workaround instead of using BIS_fnc_arrayCompare or BIS_fnc_areEqual
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