[#BloombergLP-bdlar-IsNullable]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlar.adoc[bdlar]::IsNullable
:relfileprefix: ../../
:mrdocs:

Meta‐function indicating whether the specified `t_TYPE` is a nullable value type.

== Synopsis

Declared in `<bdlar_typecategory.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class t_TYPE>
struct IsNullable
    : xref:BloombergLP/bdlat_NullableValueFunctions/IsNullableValue-030.adoc[BloombergLP::bdlat_NullableValueFunctions::IsNullableValue<t_TYPE>]
----

== Base Classes

[cols="1,4"]
|===
| Name| Description
| `xref:BloombergLP/bdlat_NullableValueFunctions/IsNullableValue-030.adoc[BloombergLP::bdlat_NullableValueFunctions::IsNullableValue<t_TYPE>]`
| This `struct` should be specialized for third‐party types that need to expose "nullable" behavior. See the component‐level documentation for further information.
|===


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