[#BloombergLP-bdlsb-OverflowMemOutput-dataLength]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlsb.adoc[bdlsb]::xref:BloombergLP/bdlsb/OverflowMemOutput.adoc[OverflowMemOutput]::dataLength
:relfileprefix: ../../../
:mrdocs:

Return the number of bytes that have been written to this object.

== Synopsis

Declared in `<bdlsb_overflowmemoutput.h>`

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


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