a = b: Difference between revisions

Revision as of 10:57, 13 May 2022

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Description:: Assigns the result of expression on the right to the variable on the left. Technically this is not a command and it is not listed in supportInfo; this is more of a compiler instruction.
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The following structure is invalid: a = b = c = 4;
Groups:: Variables

Syntax:: variable = value
Parameters:: variable: Anything - see Identifier
: value: Anything
Return Value:: Nothing
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The returned value is not equivalent to nil. See Notes below for additional information.

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Only post proven facts here! Add Note

: Posted on December 15, 2006 - 05:27
Kronzky: A conditional assignment can be done via the following syntax: _msg = if (alive player) then {"you're alive"} else {"you're dead"}; Posted on June 22, 2009 - 16:27
Alef: It's possible to assign to numbers. Numbers values are not changed. Useful instead of assigning to nul or nil when a result is of no use. 0 = [player] execVM "myScript.sqf"
: Posted on November 9, 2016 - 00:29 (UTC)
Dedmen: This operator actually does not return a Nil. It really returns pure Nothing. Not Nil Nothing.
This can cause problems. For example:
_var1 = call { _var2 = ""; };
The return value of the "call" is the return value of the "=" operator.
If it were a nil then of cause "_var = nil;" would work just fine.
But in reality this causes a "Generic Error in expression" because you can't assign pure Nothing to anything.

@@ Line 67: / Line 67: @@
 This operator actually does not return a Nil. It really returns pure Nothing. Not Nil Nothing.<br>
 This can cause problems. For example:
-<code>_var1 = call {
+<sqf>_var1 = call {
 	_var2 = "";
-};</code>
+};</sqf>
 The return value of the "call" is the return value of the "<nowiki>=</nowiki>" operator.<br>
 If it were a nil then of cause "_var <nowiki>=</nowiki> nil;" would work just fine.<br>