Variables - Revision history

Lou Montana: Some wiki formatting

2025-11-07T23:34:36Z

Some wiki formatting

2024-07-11T14:13:57Z

← Older revision		Revision as of 16:13, 11 July 2024
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	{{Feature\|warning\|		{{Feature\|warning\|
	Local variables in [[call]]able code (e.g [[Arma 3: Functions Library\|Functions]]) should be scoped using the ~~command~~ [[private]],		Local variables in [[call]]able code (e.g [[Arma 3: Functions Library\|Functions]]) should be scoped using the [[private]]/[[privateAll]] commands,
	otherwise you may modify local variables of the [[call]]ing script that are visible in the function.}}		otherwise you may modify local variables of the [[call]]ing script that are visible in the function.}}
	<sqf>		<sqf>
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	* [[Control Structures]]		* [[Control Structures]]
	* [[Magic Variables]]		* [[Magic Variables]]
	* [[private]] ({{arma3}})		* [[private]]/[[privateAll]] ({{arma3}})
	* [[local]] ({{arma2}})		* [[local]] ({{arma2}})


	[[Category: Scripting Topics]]		[[Category: Scripting Topics]]

2024-05-16T20:42:02Z

Text replacement - "{{Feature | Informative | " to "{{Feature|informative|"

← Older revision		Revision as of 22:42, 16 May 2024
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	A local variable is only visible in the [[Script File\|Script]], [[Function]] or [[Control Structures\|Control Structure]] in which it was defined.		A local variable is only visible in the [[Script File\|Script]], [[Function]] or [[Control Structures\|Control Structure]] in which it was defined.

	{{Feature \| ~~Informative~~ \| A local variable cannot be broadcast. In order to broadcast a local variable's ''value'', it must be assigned to a global variable first:		{{Feature\|informative\|A local variable cannot be broadcast. In order to broadcast a local variable's ''value'', it must be assigned to a global variable first:
	<sqf>		<sqf>
	private _myLocalVariable = 33;		private _myLocalVariable = 33;

2024-05-06T09:38:46Z

Text replacement - "[[Arma 3 " to "[[Arma 3: "

← Older revision		Revision as of 11:38, 6 May 2024
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	{{Feature\|warning\|		{{Feature\|warning\|
	Local variables in [[call]]able code (e.g [[Arma 3 Functions Library\|Functions]]) should be scoped using the command [[private]],		Local variables in [[call]]able code (e.g [[Arma 3: Functions Library\|Functions]]) should be scoped using the command [[private]],
	otherwise you may modify local variables of the [[call]]ing script that are visible in the function.}}		otherwise you may modify local variables of the [[call]]ing script that are visible in the function.}}
	<sqf>		<sqf>
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	The biggest security risk would be to see it being overridden by a malicious usage of [[publicVariable]], setting potentially dangerous code in it.		The biggest security risk would be to see it being overridden by a malicious usage of [[publicVariable]], setting potentially dangerous code in it.

	The best option is to declare your function in [[Arma 3 Functions Library\|CfgFunctions]] so the engine secures it for you.		The best option is to declare your function in [[Arma 3: Functions Library\|CfgFunctions]] so the engine secures it for you.

	If you want to manually create a global function anyway, the best practice is the following:		If you want to manually create a global function anyway, the best practice is the following:

2024-04-21T15:12:44Z

Some wiki formatting

← Older revision		Revision as of 17:12, 21 April 2024
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	== ~~Initialization~~ ==		== Initialisation ==

	The first thing to do to create a variable is to find its name, also called [[Identifier\|identifier]]; this name must be speaking to the reader - keep in mind that code is meant to be read by ''human beings'' (see [[Code Best Practices#Variable format\|Code Best Practices - Variable format]]).		The first thing to do to create a variable is to find its name, also called [[Identifier\|identifier]]; this name must be speaking to the reader - keep in mind that code is meant to be read by ''human beings'' (see [[Code Best Practices#Variable format\|Code Best Practices - Variable format]]).

2024-03-19T12:01:25Z

Text replacement - "{{arma2}}" to "{{GameCategory|arma2|link= y}}"

← Older revision		Revision as of 14:01, 19 March 2024
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	<sqf>myVariable = 0;</sqf>		<sqf>myVariable = 0;</sqf>

	Before ~~[[:Category:Arma 2\|~~{{arma2}}]], querying undefined (or uninitialised) variables returns [[nil]] (undefined value); from ~~[[:Category:Arma 2\|~~{{arma2}}]] and later, it returns an "Error Undefined variable in expression" error.		Before {{GameCategory\|arma2\|link= y}}, querying undefined (or uninitialised) variables returns [[nil]] (undefined value); from {{GameCategory\|arma2\|link= y}} and later, it returns an "Error Undefined variable in expression" error.
	{{Feature\|informative\|		{{Feature\|informative\|
	An undefined ([[nil]]) variable converted to [[String]] with [[str]] will return [[scalar bool array string 0xe0ffffef]] (in [[:Category:ArmA: Armed Assault\|{{arma1}}]]) and [[scalar bool array string 0xfcffffef]] (in [[:Category:Operation Flashpoint\|{{ofp}}]]).<br>		An undefined ([[nil]]) variable converted to [[String]] with [[str]] will return [[scalar bool array string 0xe0ffffef]] (in [[:Category:ArmA: Armed Assault\|{{arma1}}]]) and [[scalar bool array string 0xfcffffef]] (in [[:Category:Operation Flashpoint\|{{ofp}}]]).<br>

2023-05-30T10:55:04Z

Fix link

← Older revision		Revision as of 12:55, 30 May 2023
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	=== Local Scope ===		=== Local Scope ===

	A local variable is only visible in the [[Script File\|~~script~~]], [[~~function~~]] or [[Control Structures\|Control Structure]] in which it was defined.		A local variable is only visible in the [[Script File\|Script]], [[Function]] or [[Control Structures\|Control Structure]] in which it was defined.

	{{Feature \| Informative \| A local variable cannot be broadcast. In order to broadcast a local variable's ''value'', it must be assigned to a global variable first:		{{Feature \| Informative \| A local variable cannot be broadcast. In order to broadcast a local variable's ''value'', it must be assigned to a global variable first:

2023-01-06T13:21:37Z

Some wiki formatting

← Older revision		Revision as of 15:21, 6 January 2023
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	<td></td>		<td></td>
	<td></td>		<td></td>
	<td>[[hint]] [[str]] '''{{Color\|darkgreen\|_myVariable}}'''; {{cc\|if '''{{Color\|grey\|_condition}}''' is [[true]], _myVariable's value is '''{{Color\|darkgreen\|1}}''';}}</td>		<td>[[hint]] [[str]] '''{{Color\|darkgreen\|_myVariable}}'''; {{cc\|if '''{{Color\|grey\|_condition}}''' is [[true]], '''{{Color\|darkgreen\|_myVariable}}''''s value is '''{{Color\|darkgreen\|1}}''';}}</td>
	</tr>		</tr>
	<tr>		<tr>
	<td></td>		<td></td>
	<td></td>		<td></td>
	<td> {{cc\|if '''{{Color\|grey\|_condition}}''' is [[false]], _myVariable's value is '''{{Color\|darkgreen\|4}}'''.}}</td>		<td> {{cc\|if '''{{Color\|grey\|_condition}}''' is [[false]], '''{{Color\|darkgreen\|_myVariable}}''''s value is '''{{Color\|darkgreen\|4}}'''.}}</td>
	</tr>		</tr>
	<tr>		<tr>

2022-07-01T14:09:46Z

Some wiki formatting

← Older revision		Revision as of 16:09, 1 July 2022
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	<td></td>		<td></td>
	<td></td>		<td></td>
	<td style="line-height: 2em">'''{{Color\|grey\|BEGINNING OF FILE}}''' - e.g <span style="font-size: small">~~{{ic\|[[~~execVM]] "script.sqf";}}</span></td>		<td style="line-height: 2em">'''{{Color\|grey\|BEGINNING OF FILE}}''' - e.g <span style="font-size: small"><sqf inline>execVM "script.sqf";</sqf></span></td>
	</tr>		</tr>
	<tr>		<tr>

2022-05-10T12:51:32Z

Some wiki formatting