[#BloombergLP-bslstl-Function_InvokerUtilNullCheck-0a-isNull]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::xref:BloombergLP/bslstl/Function_InvokerUtilNullCheck-0a.adoc[Function_InvokerUtilNullCheck<FUNC*>]::isNull
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:mrdocs:

Return `true` if the specified `f` pointer is null; otherwise `false`.

== Synopsis

Declared in `<bslstl_function_invokerutil.h>`

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


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