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

Return pointer to the location where the (held) map's size is stored.

== Synopsis

Declared in `<bdld_datum.h>`

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