[#BloombergLP-bdld-DatumMapOwningKeysBuilder-size]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdld.adoc[bdld]::xref:BloombergLP/bdld/DatumMapOwningKeysBuilder.adoc[DatumMapOwningKeysBuilder]::size
:relfileprefix: ../../../
:mrdocs:

Return the size of the held `Datum` map (owning keys). The behavior is undefined if `commit` or `sortAndCommit` has already been called on this object.

== Synopsis

Declared in `<bdld_datummapowningkeysbuilder.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdld/DatumMapOwningKeysBuilder/SizeType.adoc[DatumMapOwningKeysBuilder::SizeType]
size() const;
----


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