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

Return `true` if the specified `character` is in the `DIGIT` category (i.e., `[0‐9]`), and `false` otherwise.

== Synopsis

Declared in `<bdlb_chartype.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
bool
isDigit(char character);
----


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