[#BloombergLP-bdlar-NullableValueConstVtable-d_isNull_fp]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlar.adoc[bdlar]::xref:BloombergLP/bdlar/NullableValueConstVtable.adoc[NullableValueConstVtable]::d&lowbar;isNull&lowbar;fp
:relfileprefix: ../../../
:mrdocs:

null predicate

== Synopsis

Declared in `&lt;bdlar&lowbar;nullablevaluevtable&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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xref:BloombergLP/bdlar/NullableValueConstVtable/IsNull.adoc[IsNull]* d&lowbar;isNull&lowbar;fp;
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