[#BloombergLP-bslfmt-StandardFormatSpecification-numFillerCharacters]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslfmt.adoc[bslfmt]::xref:BloombergLP/bslfmt/StandardFormatSpecification.adoc[StandardFormatSpecification]::numFillerCharacters
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:mrdocs:

Return the number of characters in the filler storage&period;

== Synopsis

Declared in `&lt;bslfmt&lowbar;standardformatspecification&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
int
numFillerCharacters() const;
----

== Description

Return the number of filler characters in the array returned by `filler()` unless the status is not `e&lowbar;STATE&lowbar;PARSED` or `e&lowbar;STATE&lowbar;POSTPROCESSED` in which case throw a `bsl&colon;&colon;format&lowbar;error` exception indicating that error&period;

== Return Value

the number of filler characters in the array returned by `filler()`


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