[#BloombergLP-bdlat_NullableValueFunctions-ValueType-08]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlat_NullableValueFunctions.adoc[bdlat_NullableValueFunctions]::ValueType
:relfileprefix: ../../
:mrdocs:

This meta‐function should contain a typedef `Type` that specifies the type of value stored in a nullable type of the parameterized `TYPE`.

== Synopsis

Declared in `<bdlat_nullablevaluefunctions.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class TYPE>
struct ValueType;
----

== Specializations

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bdlat_NullableValueFunctions/ValueType-00.adoc[`ValueType<bdlar::NullableValueConstRef>`] 
| Metafunction providing the value type of `bdlar::NullableValueConstRef`.
| xref:BloombergLP/bdlat_NullableValueFunctions/ValueType-0d.adoc[`ValueType<bdlar::NullableValueRef>`] 
| Metafunction providing the value type of `bdlar::NullableValueRef`.
| xref:BloombergLP/bdlat_NullableValueFunctions/ValueType-05.adoc[`ValueType<bdlb::NullableAllocatedValue<TYPE>>`] 
| Specialization of `ValueType` for `bdlb::NullableAllocatedValue`.
| xref:BloombergLP/bdlat_NullableValueFunctions/ValueType-02.adoc[`ValueType<bdlb::NullableValue<TYPE>>`] 
| Specialization of `ValueType` for `bdlb::NullableValue`.
|===



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