[#BloombergLP-bdld-DatumMapRef-data]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdld.adoc[bdld]::xref:BloombergLP/bdld/DatumMapRef.adoc[DatumMapRef]::data
:relfileprefix: ../../../
:mrdocs:

Return a pointer to the first entry of this map&period;

== Synopsis

Declared in `&lt;bdld&lowbar;datum&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdld/DatumMapRef/pointer.adoc[DatumMapRef::pointer]
data() const noexcept;
----

== Description

Return the address providing non&hyphen;modifiable access to the first element of the map this reference object represents&period; Return a valid pointer which cannot be dereferenced if the `size() &equals;&equals; 0`&period;

== Return Value

a pointer to the first entry of this map


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