[#BloombergLP-bdlb-CharType-numAlnum]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlb.adoc[bdlb]::xref:BloombergLP/bdlb/CharType.adoc[CharType]::numAlnum
:relfileprefix: ../../../
:mrdocs:

Return the number of characters in the category `ALNUM` (i&period;e&period;, `&lsqb;0&hyphen;9A&hyphen;Za&hyphen;Z&rsqb;`)&period;

== Synopsis

Declared in `&lt;bdlb&lowbar;chartype&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
int
numAlnum();
----

== Return Value

number of characters in category `ALNUM`


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