[#BloombergLP-bdlat_EnumFunctions-bdlat_enumIsFallback]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlat_EnumFunctions.adoc[bdlat&lowbar;EnumFunctions]::bdlat&lowbar;enumIsFallback
:relfileprefix: ../../
:mrdocs:

Return `true` if the specified `value` is equal to a fallback enumerator, and `false` otherwise&period;

== Synopsis

Declared in `&lt;bdlat&lowbar;enumfunctions&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template&lt;class TYPE&gt;
bool
bdlat&lowbar;enumIsFallback(TYPE const& value);
----

== Description

The behavior is undefined if this default implementation of `bdlat&lowbar;enumIsFallback` is instantiated with a template parameter `TYPE` such that `bdlat&lowbar;HasFallbackEnumerator&lt;TYPE&gt;` is `false`&period; Note that this is a customization point function and should not be called directly by user code&period; Use `bdlat&lowbar;EnumFunctions&colon;&colon;isFallback` instead&period;

== Return Value

`true` if `value` is equal to a fallback enumerator, and `false` otherwise

== Parameters

[cols="1,4"]
|===
| Name| Description
| *value*
| enumeration value to compare with the fallback enumerator
|===


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