isNull: Difference between revisions

Revision as of 19:38, 17 April 2014

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Description:

Checks whether the tested item is Null.
Which null type the item has to be equal to depends on the type of object tested:

Note: A test via == does not work, because, for example, objNull is not equal to anything, not even to itself.

Groups:

Uncategorised

Syntax:: isNull obj
Parameters:: obj: Object, Control, Display, Group (or Location, Task since ARMA 2)
Return Value:: Boolean

See also:: controlNull displayNull grpNull locationNull objNull taskNull teamMemberNull

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Only post proven facts here! Add Note

@@ Line 17: / Line 17: @@
 * [[Location]]s -> [[locationNull]] (since ARMA 2)
 * [[Task]]s -> [[taskNull]] (since ARMA 2)
-* [[Side]]s -> [[sideUnknown]] (since ARMA 2)
 Note: A test via <nowiki>==</nowiki> does not work, because, for example, [[objNull]] is not equal to anything, not even to itself. |= Description
@@ Line 24: / Line 23: @@
 | '''isNull''' obj |= Syntax
-|p1 = obj: [[Object]], [[Control]], [[Display]], [[Group]] (or [[Location]], [[Task]], [[Side]] since ARMA 2) |= Parameter 1
+|p1 = obj: [[Object]], [[Control]], [[Display]], [[Group]] (or [[Location]], [[Task]] since ARMA 2) |= Parameter 1
 | [[Boolean]] |= Return value
 ____________________________________________________________________________________________
-|x1 = <code>if (isNull obj) then {hint "doesn't exist"} </code>
-| [[controlNull]], [[displayNull]], [[grpNull]], [[locationNull]], [[objNull]], [[taskNull]], [[teamMemberNull]], [[sideUnknown]] |= See also
+|x1 = <code>[[if]] ([[isNull]] obj) [[then]] {[[hint]] "doesn't exist";};</code>
+| [[controlNull]], [[displayNull]], [[grpNull]], [[locationNull]], [[objNull]], [[taskNull]], [[teamMemberNull]] |= See also
 }}