[#BloombergLP-bdlb-NullableAllocatedValue-2constructor-05bd]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlb.adoc[bdlb]::xref:BloombergLP/bdlb/NullableAllocatedValue.adoc[NullableAllocatedValue]::NullableAllocatedValue
:relfileprefix: ../../../
:mrdocs:

Create a nullable object that has the null value and that uses the mechanism of the specified `allocator` to supply memory&period;

== Synopsis

Declared in `&lt;bdlb&lowbar;nullableallocatedvalue&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
explicit
NullableAllocatedValue(xref:bsl/allocator-0df.adoc[bsl::allocator&lt;char&gt;] const& allocator);
----


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