[#BloombergLP-bdlar-bdlat_nullableValueIsNull-00]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlar.adoc[bdlar]::bdlat_nullableValueIsNull
:relfileprefix: ../../
:mrdocs:

Return `true` if the specified `ref` contains a null value, and `false` otherwise.

== Synopses

Declared in `<bdlar_nullablevalueref.h>`

Return `true` if the specified `ref` contains a null value, and `false` otherwise.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool
xref:BloombergLP/bdlar/bdlat_nullableValueIsNull-0a.adoc[bdlat_nullableValueIsNull](xref:BloombergLP/bdlar/NullableValueConstRef.adoc[NullableValueConstRef] const& ref);
----

[.small]#xref:BloombergLP/bdlar/bdlat_nullableValueIsNull-0a.adoc[_» more..._]#

Return `true` if the specified `ref` contains a null value, and `false` otherwise.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool
xref:BloombergLP/bdlar/bdlat_nullableValueIsNull-04.adoc[bdlat_nullableValueIsNull](xref:BloombergLP/bdlar/NullableValueRef.adoc[NullableValueRef] const& ref);
----

[.small]#xref:BloombergLP/bdlar/bdlat_nullableValueIsNull-04.adoc[_» more..._]#


[.small]#Created with https://www.mrdocs.com[MrDocs]#