[#BloombergLP-bdlar-NullableValueRef-2constructor-04]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlar.adoc[bdlar]::xref:BloombergLP/bdlar/NullableValueRef.adoc[NullableValueRef]::NullableValueRef
:relfileprefix: ../../../
:mrdocs:

Create `NullableValueRef` object that type erases the supplied `nullable` object.

== Synopsis

Declared in `<bdlar_nullablevalueref.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class t_NULLABLE>
explicit
NullableValueRef(t_NULLABLE& nullable)
requires IsNullable<t_NULLABLE>::value;
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *nullable*
| nullable value object to wrap
|===


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