[#BloombergLP-bslalg-DequeIterator-0d-blockBegin]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslalg.adoc[bslalg]::xref:BloombergLP/bslalg/DequeIterator-0d.adoc[DequeIterator]::blockBegin
:relfileprefix: ../../../
:mrdocs:

Return the address of the first element in the block pointed to by this iterator&period;

== Synopsis

Declared in `&lt;bslalg&lowbar;dequeiterator&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
VALUE&lowbar;TYPE*
blockBegin() const;
----

== Return Value

address of the first element in the current block


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