isNull: Difference between revisions
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| Checks whether the tested item is Null.<br> | | Checks whether the tested item is Null.<br> | ||
Which null type the item has to be equal to depends on the type of | Which null type the item has to be equal to depends on the type of game entity tested:<br> | ||
* [[Object]]s -> [[objNull]] | * [[Object]]s -> [[objNull]] | ||
* [[Control]]s -> [[controlNull]] | * [[Control]]s -> [[controlNull]] | ||
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* [[Script]]s -> [[scriptNull]] (since Arma 3 1.29.127075) | * [[Script]]s -> [[scriptNull]] (since Arma 3 1.29.127075) | ||
Note: A test via <nowiki>==</nowiki> does not work, because, for example, [[objNull]] is not equal to anything, not even to itself. |= Description | Note: A test via <nowiki>==</nowiki> does not work, because, for example, [[objNull]] is not equal to anything, not even to itself. Use [[isEqualTo]]. |= Description | ||
____________________________________________________________________________________________ | ____________________________________________________________________________________________ | ||
| '''isNull''' | | '''isNull''' entity |= Syntax | ||
|p1 = | |p1 = entity: [[Object]], [[Control]], [[Display]], [[Group]] (or [[Location]], [[Task]] since ARMA 2 (or [[Script]] since Arma 3 1.29.127075)) |= Parameter 1 | ||
| [[Boolean]] |= Return value | | [[Boolean]] |= Return value | ||
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|x1 = <code>[[if]] ([[isNull]] obj) [[then]] {[[hint]] "doesn't exist";};</code> | |x1 = <code>[[if]] ([[isNull]] obj) [[then]] {[[hint]] "doesn't exist";};</code> | ||
| [[controlNull]], [[displayNull]], [[grpNull]], [[locationNull]], [[objNull]], [[taskNull]], [[teamMemberNull]] |= See also | | [[controlNull]], [[displayNull]], [[grpNull]], [[locationNull]], [[objNull]], [[taskNull]], [[teamMemberNull]], [[scriptNull]]|= See also | ||
}} | }} | ||
Revision as of 21:00, 5 September 2014
Description
- Description:
- Checks whether the tested item is Null.
Which null type the item has to be equal to depends on the type of game entity tested:
- Objects -> objNull
- Controls -> controlNull
- Displays -> displayNull
- Groups -> grpNull
- Locations -> locationNull (since ARMA 2)
- Tasks -> taskNull (since ARMA 2)
- Scripts -> scriptNull (since Arma 3 1.29.127075)
- Groups:
- Uncategorised
Syntax
- Syntax:
- isNull entity
- Parameters:
- entity: Object, Control, Display, Group (or Location, Task since ARMA 2 (or Script since Arma 3 1.29.127075))
- Return Value:
- Boolean
Examples
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
Notes
Bottom Section
Categories:
- Scripting Commands
- Introduced with Operation Flashpoint version 1.00
- Operation Flashpoint: New Scripting Commands
- Operation Flashpoint: Scripting Commands
- Command Group: Uncategorised
- Scripting Commands OFP 1.96
- Scripting Commands OFP 1.46
- Scripting Commands ArmA
- Command Group: Object Information
- Command Group: Variables
- Scripting Commands ArmA2
- Scripting Commands Arma 3
- Scripting Commands Take On Helicopters