Type:Nullable`1: Difference between revisions

Latest revision as of 02:58, 10 December 2024

The Nullable<T> type is a C# construct that wraps around a non-nullable C# value type to allow the type to store an additional value--null--representing the absense of a value.

Nullable types are a value type in the FrooxEngine data model, but an Object in the ProtoFlux data model.

Nullable types are useful when one is unsure whether a value may or may not exist in the first place, rather than reling on some sort of default value that represents the absense of a value. In addition, whenever an "unset" state is useful to keep track of, nullables can come in handy.

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-A Nullable<T> is a [[Generic Type|generic]] [[Value Type | value]] type that can store a null value - normally only possible by [[Reference Type | reference types]].
+The '''Nullable&lt;T&gt;''' type is a C# construct that wraps around a non-nullable [https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/builtin-types/value-types C# value type] to allow the type to store an additional value--<code>null</code>--representing the absense of a value.
-For more information on how this type functions, see the [https://learn.microsoft.com/en-us/dotnet/api/system.nullable-1 Microsoft documentation on Nullable<T>]
+Nullable types are a [[value type]] in the FrooxEngine data model, but an [[Type:Object|Object]] in the ProtoFlux data model.
-== Usage ==
+Nullable types are useful when one is unsure whether a value may or may not exist in the first place, rather than reling on some sort of default value that represents the absense of a value. In addition, whenever an "unset" state is useful to keep track of, nullables can come in handy.
-Use this wherever you need a value variable (for example [[Type:Bool | bool]] or [[Type:Float | float]]), but you also need to track an unset/empty/null state.
 == See Also ==
+* Microsoft's documentation on the [https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/builtin-types/nullable-value-types nullable value types] & [https://learn.microsoft.com/en-us/dotnet/csharp/nullable-references nullable reference types].
 * Wikipedia's definition of [https://en.wikipedia.org/wiki/Nullable_type nullable types].
-* Microsoft's documentation on the [https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/builtin-types/nullable-value-types nullable value types] & [https://learn.microsoft.com/en-us/dotnet/csharp/nullable-references nullable reference types].
 [[Category:Type]]
 [[Category:Value Types]]