[#BloombergLP-bdlb-NullableValue-2constructor-0a]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlb.adoc[bdlb]::xref:BloombergLP/bdlb/NullableValue.adoc[NullableValue]::NullableValue
:relfileprefix: ../../../
:mrdocs:

Create a nullable object having the value of the specified `value` (of `BDE_OTHER_TYPE`) converted to `TYPE` and that uses the specified `allocator` to supply memory.

== Synopsis

Declared in `<bdlb_nullablevalue.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class BDE_OTHER_TYPE>
NullableValue(
    xref:bsl/optional-072.adoc[bsl::optional<BDE_OTHER_TYPE>] const& value,
    xref:BloombergLP/bdlb/NullableValue/allocator_type.adoc[allocator_type] const& allocator,
    xref:BloombergLP/bdlb/NullableValue.adoc[EnableType] = EnableType())
requires bsl::is_convertible<BDE_OTHER_TYPE, TYPE>::value &&
                     !bsl::is_same<bsl::optional<BDE_OTHER_TYPE>, TYPE>::value;
----


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