[#BloombergLP-bdlat_NullableValueFunctions-bdlat_nullableValueIsNull-05]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlat_NullableValueFunctions.adoc[bdlat_NullableValueFunctions]::bdlat_nullableValueIsNull
:relfileprefix: ../../
:mrdocs:

Return whether the specified nullable `object` is null.

== Synopsis

Declared in `<bdlat_nullablevaluefunctions.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class TYPE>
bool
bdlat_nullableValueIsNull(xref:BloombergLP/bdlb/NullableValue.adoc[bdlb::NullableValue<TYPE>] const& object);
----

== Description

Default customization‐point implementation of `isNull` for `bdlb::NullableValue`.

== Return Value

`true` if `object` is null, and `false` otherwise

== Parameters

[cols="1,4"]
|===
| Name| Description
| *object*
| nullable value to test
|===


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