[#BloombergLP-balcl-OptionValue-isNull]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/balcl.adoc[balcl]::xref:BloombergLP/balcl/OptionValue.adoc[OptionValue]::isNull
:relfileprefix: ../../../
:mrdocs:

Return `true` if the value of this object (irrespective of non‐`void` type) is null. The behavior is undefined unless `true == hasNonVoidType()`.

== Synopsis

Declared in `<balcl_optionvalue.h>`

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


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