ProtoFlux:Is Null: Difference between revisions

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VisualWikitext

Latest revision as of 09:38, 27 June 2024

Is Null

Instance

*

Operators

The Is Null node takes in a reference type and returns if the provided reference is null.

Value types cannot be null, unless using the nullable version of those types. Using value types that are nullables will not work with this node however.

If you want to check if something is not null, use the Not Null node instead.

Inputs

Instance (Pseudo-Generic)

The reference to check.

Outputs

* (bool)

Outputs if instance is null.

@@ Line 11: / Line 11: @@
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-'''Is Null''' returns a bool of if the inputted object is null.
+The '''Is Null''' node takes in a [[Reference Type|reference type]] and returns if the provided reference is null.
+{{Note|[[Value Type|Value types]] cannot be null, unless using the nullable version of those types. Using value types that are [[Type:Nullable`1|nullables]] will not work with this node however.|information}}
+{{Note|If you want to check if something is not null, use the [[ProtoFlux:Not Null|Not Null]] node instead.|suggestion}}
 == Inputs ==
 === Instance (Pseudo-Generic) ===
-Inputted object to check if null.
+The reference to check.
 == Outputs ==
 === * ([[Types:Bool |bool]]) ===
-Output of if instance is null.
+Outputs if instance is null.
+== See Also ==
+* Wikipedia's definition of [https://en.wikipedia.org/wiki/Null_pointer null] in Computer Science.
+* Microsoft's documentation on the [https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/null null] keyword.
 [[Category:ProtoFlux:Operators]]