[#BloombergLP-bslalg-DequeIterator-01-previousBlock]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslalg.adoc[bslalg]::xref:BloombergLP/bslalg/DequeIterator-01.adoc[DequeIterator<VALUE_TYPE, 1>]::previousBlock
:relfileprefix: ../../../
:mrdocs:

Set this iterator to point to the first (not the last) element of the previous block.

== Synopsis

Declared in `<bslalg_dequeiterator.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
previousBlock();
----


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