a == b: Difference between revisions

Revision as of 11:02, 12 May 2022

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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:: Math Variables

Syntax:

a == b

Parameters:

a:

Introduced in	1.00					1.00				1.08	2.00
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

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" };

: 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

@@ Line 71: / Line 71: @@
 |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]]
@@ Line 83: / Line 83: @@
 <dd class="note">
 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.