[#BloombergLP-bslstl-Function_InvokerUtilNullCheck-07-isNull]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::xref:BloombergLP/bslstl/Function_InvokerUtilNullCheck-07.adoc[Function&lowbar;InvokerUtilNullCheck&lt;MEMTYPECLASS::*&gt;]::isNull
:relfileprefix: ../../../
:mrdocs:

Return `true` if the specified `f` pointer to member is null&semi; otherwise `false`&period;

== Synopsis

Declared in `&lt;bslstl&lowbar;function&lowbar;invokerutil&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
bool
isNull(MEMTYPECLASS::* f);
----


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