[#BloombergLP-bdlc-FlatHashSet-size]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlc.adoc[bdlc]::xref:BloombergLP/bdlc/FlatHashSet.adoc[FlatHashSet]::size
:relfileprefix: ../../../
:mrdocs:

Return the number of elements in this set.

== Synopsis

Declared in `<bdlc_flathashset.h>`

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


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