a == b: Difference between revisions

Revision as of 20:03, 13 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" };

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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 87: / Line 87: @@
 It is recommended to use [[isEqualTo]] for all types comparison, which is more functional and as fast as operator.
 For multiple comparisons:
-<code>fnc_areEqual = {
+<sqf>fnc_areEqual = {
-	[[private]] ["_b", "_var1", "_var2"];
+	private ["_b", "_var1", "_var2"];
-	_b = [[true]];
+	_b = true;
-	[[for]] [{ _i = 1 }, { _i < ([[count]] _this) && _b }, { _i=_i + 1 }] [[do]] {
+	for [{ _i = 1 }, { _i < (count _this) && _b }, { _i=_i + 1 }] do {
-		_var1 = _this [[select]] (_i-1);
+		_var1 = _this select (_i-1);
-		_var2 = _this [[select]] _i;
+		_var2 = _this select _i;
-		[[if]] (!(_var1 [[isEqualTo]] _var2)) [[then]] { _b = [[false]]; };
+		if (!(_var1 isEqualTo _var2)) then { _b = false; };
 	};
 	_b
 };
-["A","a","a"] call fnc_areEqual; // false</code>
+["A","a","a"] call fnc_areEqual; // false
+</sqf>
 And we can use such workaround instead of using [[BIS_fnc_arrayCompare]] or [[BIS_fnc_areEqual]]
 </dd>
 </dl>