[#BloombergLP-bdlb-ConstNullableValueRef-2conversion]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlb.adoc[bdlb]::xref:BloombergLP/bdlb/ConstNullableValueRef.adoc[ConstNullableValueRef]::operator bool
:relfileprefix: ../../../
:mrdocs:

Return `true` if the target holds a value, and `false` otherwise&period;

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
explicit
operator bool() const noexcept;
----

== Return Value

`true` if the target holds a value, and `false` otherwise


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