isNil
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Description
- Description:
- Tests whether a variable is nil or undefined from its identifier, or whether the given expression evaluates to nil or Nothing.
- Groups:
- Variables
Syntax 1
- Syntax:
- isNil variableName
- Parameters:
- variableName: String - missionNamespace's or local variable's identifier (e.g "globalVariable", "_localVariable")
- Return Value:
- Boolean - true if variable is nil or undefined
Syntax 2
- Syntax:
- isNil code
- Parameters:
- code: Code - code to evaluate:
- Return Value:
- Boolean - true if code returns Nothing, false otherwise
Syntax 3
- Syntax:
- namespace isNil variableName
- Parameters:
- namespace: Namespace, Object, Group or HashMap
- variableName: String
- Return Value:
- Boolean - true if variable is nil or undefined
Examples
- Example 1:
- Example 2:
- Example 3:
- Example 4:
- This trick forces executing something in Unscheduled Environment:
0 spawn { systemChat str canSuspend; // chat shows true isNil { hint str canSuspend }; // hint shows false };
- Example 5:
- Operation Flashpoint String comparison workaround
SQS Syntax:SQF Syntax:
Additional Information
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
Categories:
- Scripting Commands
- Introduced with Armed Assault version 1.00
- ArmA: Armed Assault: New 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