[#BloombergLP-bdlsb-FixedMemOutStreamBuf-capacity]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlsb.adoc[bdlsb]::xref:BloombergLP/bdlsb/FixedMemOutStreamBuf.adoc[FixedMemOutStreamBuf]::capacity
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Return the number of characters in the buffer held by this stream buffer&period; See `length`, below, for the span of bytes actually written&period;

== Synopsis

Declared in `&lt;bdlsb&lowbar;fixedmemoutstreambuf&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::streamsize
capacity() const;
----

== Return Value

size in characters of the buffer held by this stream buffer


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