a = b: Difference between revisions
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# | {{RV|type=command | ||
|sortKey= # | |||
|game1= ofp | |||
|version1= 1.00 | |||
|game2= ofpe | |||
|version2= 1.00 | |||
|game3= arma1 | |||
|version3= 1.00 | |||
|game4= arma2 | |||
|version4= 1.00 | |||
|game5= arma2oa | |||
|version5= 1.50 | |||
|game6= tkoh | |||
|version6= 1.00 | |||
|game7= arma3 | |||
|version7= 0.50 | |||
|gr1= Variables | |||
|descr= 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. | |||
{{Feature|important|The following structure is invalid: <sqf inline>a = b = c = 4;</sqf>.}} | |||
|s1= variable [[a = b|=]] value | |||
|p1= variable: [[Anything]] - see [[Identifier]] | |||
|p2= value: [[Anything]] | |||
|r1= [[Nothing]] {{Feature|important|The returned value is not equivalent to [[nil]]. See {{Link|#Notes}} below for additional information.}} | |||
|x1= <sqf>_value = 5;</sqf> | |||
|x2= <sqf>_mygroup = group player;</sqf> | |||
|x3= <sqf>_greeting = "Hello!";</sqf> | |||
|x4= <sqf>private _enemyTank = myTank1;</sqf> | |||
|seealso= [[Operators]] | |||
}} | |||
{{Note | |||
|user= Kronzky | |||
|timestamp= 20061215052700 | |||
|text= A conditional assignment can be done via the following syntax: | |||
<sqf>_msg = if (alive player) then {"you're alive"} else {"you're dead"}</sqf> | |||
}} | |||
{{Note | |||
|user= Alef | |||
|timestamp= 20090622162700 | |||
|text= It's possible to assign to [[Number]]s. Numbers values are not changed. Useful instead of assigning to ''nul'' or ''nil'' when a result is of no use. | |||
<sqf>[player] execVM "myScript.sqf"</sqf> | |||
}} | |||
{{Note | |||
|user= Dedmen | |||
|timestamp= 20161109002900 | |||
|text= This operator actually does not return a Nil. It really returns pure Nothing. Not Nil Nothing.<br> | |||
This can cause problems. For example: | |||
<sqf> | |||
_var1 = call { | |||
_var2 = ""; | |||
}; | |||
</sqf> | |||
The return value of the "call" is the return value of the "{{=}}" operator.<br> | |||
If it were a nil then of cause "_var {{=}} nil;" would work just fine.<br> | |||
But in reality this causes a "Generic Error in expression" because you can't assign pure Nothing to anything | |||
}} |
Latest revision as of 14:49, 8 November 2023
Description
- 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.
- Groups:
- Variables
Syntax
- Syntax:
- variable = value
- Parameters:
- variable: Anything - see Identifier
- value: Anything
- Return Value:
- Nothing
Examples
- Example 1:
- _value = 5;
- Example 2:
- Example 3:
- _greeting = "Hello!";
- Example 4:
Additional Information
- See also:
- 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
- Posted on Dec 15, 2006 - 05:27 (UTC)
- A conditional assignment can be done via the following syntax:
- Posted on Jun 22, 2009 - 16:27 (UTC)
- 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.
- Posted on Nov 09, 2016 - 00:29 (UTC)
-
This operator actually does not return a Nil. It really returns pure Nothing. Not Nil Nothing.
This can cause problems. For example: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
Categories:
- Scripting Commands
- Introduced with Operation Flashpoint version 1.00
- Operation Flashpoint: New Scripting Commands
- Operation Flashpoint: Scripting Commands
- Operation Flashpoint: Elite: Scripting Commands
- ArmA: Armed Assault: Scripting Commands
- Arma 2: Scripting Commands
- Arma 2: Operation Arrowhead: Scripting Commands
- Take On Helicopters: Scripting Commands
- Arma 3: Scripting Commands
- Command Group: Variables