[#BloombergLP-bdlb-ConstNullableValueRef-2constructor-03]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlb.adoc[bdlb]::xref:BloombergLP/bdlb/ConstNullableValueRef.adoc[ConstNullableValueRef]::ConstNullableValueRef
:relfileprefix: ../../../
:mrdocs:

Create a nullable object wrapper that refers to the target object of the specified `ref` wrapper. Note that the created wrapper does not own a copy of the underlying nullable value, but instead refers to to it, and so the lifetime of the target must exceed the lifetime of the created wrapper.

== Synopsis

Declared in `<bdlb_nullablevalueref.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
ConstNullableValueRef(xref:BloombergLP/bdlb/NullableValueRef.adoc[NullableValueRef<TYPE>] const& ref);
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