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An | __NOTOC__ | ||
An [[Identifier]] is the name given to a [[Variables|variable]] that the scripter can choose: It is the name that ''identifies'' the variable. | |||
== Rules == | == Rules == | ||
{| class="wikitable float-right" | |||
|+ Regex: {{hl|[a-zA-Z_][a-zA-Z0-9_]*}} | |||
! Valid | |||
! Invalid | |||
|- | |||
| | |||
* variable1 | |||
* _my_local_variable | |||
* _1variable | |||
* _player | |||
| | |||
* {{Color|red|1}}variable | |||
* _my{{Color|red|#}}localVar | |||
* _guy1{{Color|red|&}}2var | |||
* {{Color|red|player}} | |||
|} | |||
Binding rules for identifiers: | Binding rules for identifiers: | ||
* Identifiers may consist of any ASCII text characters (a-z, A-Z), numbers (0-9) and underscores (_). | |||
* Identifiers '''must not''' start with a number (e.g "9myVariable" is invalid). | |||
* Identifiers of [[Variables|local variables]] '''must''' start with an underscore. | |||
* Identifiers are '''case-insensitive'''. | |||
* Identifiers '''cannot be the same as reserved words''' (e.g [[:Category:Scripting Commands|commands]] and [[:Category:Functions|functions]]). | |||
== Recommendations == | |||
''' | It is recommended to write '''local variable identifiers''' in {{Link|https://en.wikipedia.org/wiki/Camel_case|camel case}} syntax. This makes identifiers more readable: | ||
<sqf>private _myVariableName = 5;</sqf> | |||
{{Feature|important| | |||
{{Link|https://en.wikipedia.org/wiki/Snake_case}} is sometimes encountered but is not recommended and should be avoided: | |||
<sqf>_my_variable_name = 5;</sqf> | |||
}} | |||
It is recommended to | It is also recommended to prefix '''global variable identifiers''' with '''your''' [[OFPEC tags|tag]] in order to avoid any potential conflict between addons, scripts and missions: | ||
{{cc|'''{{Color|purple|Tag}}'''_identifier}} | |||
<span style="color: purple; font-weight: bold">UNIQUETAG</span>_player = [[player]]; | |||
== See also == | |||
* [[Variables]] | |||
[[Category: | [[Category: Syntax]] | ||
Latest revision as of 00:49, 24 February 2023
An Identifier is the name given to a variable that the scripter can choose: It is the name that identifies the variable.
Rules
| Valid | Invalid |
|---|---|
|
|
Binding rules for identifiers:
- Identifiers may consist of any ASCII text characters (a-z, A-Z), numbers (0-9) and underscores (_).
- Identifiers must not start with a number (e.g "9myVariable" is invalid).
- Identifiers of local variables must start with an underscore.
- Identifiers are case-insensitive.
- Identifiers cannot be the same as reserved words (e.g commands and functions).
Recommendations
It is recommended to write local variable identifiers in camel case syntax. This makes identifiers more readable:
It is also recommended to prefix global variable identifiers with your tag in order to avoid any potential conflict between addons, scripts and missions:
// Tag_identifier UNIQUETAG_player = player;