[#BloombergLP-bslalg-DequeIterator-0d-2constructor-04]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslalg.adoc[bslalg]::xref:BloombergLP/bslalg/DequeIterator-0d.adoc[DequeIterator]::DequeIterator
:relfileprefix: ../../../
:mrdocs:

Constructors

== Synopses

Declared in `<bslalg_dequeiterator.h>`

Create a singular iterator (i.e., having internal null pointers).


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bslalg/DequeIterator-0d/2constructor-05.adoc[DequeIterator]();
----

[.small]#xref:BloombergLP/bslalg/DequeIterator-0d/2constructor-05.adoc[_» more..._]#

Create an iterator pointing to the first element in the block pointed to by the specified `blockPtrPtr`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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explicit
xref:BloombergLP/bslalg/DequeIterator-0d/2constructor-0f.adoc[DequeIterator](xref:BloombergLP/bslalg/DequeIterator-0d.adoc[BlockPtr]* blockPtrPtr);
----

[.small]#xref:BloombergLP/bslalg/DequeIterator-0d/2constructor-0f.adoc[_» more..._]#

Create an iterator pointing to the element at the specified `valuePtr` address in the block pointed to by the specified `blockPtrPtr`. The behavior is undefined unless `valuePtr` points into the block `*blockPtrPtr`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bslalg/DequeIterator-0d/2constructor-08.adoc[DequeIterator](
    xref:BloombergLP/bslalg/DequeIterator-0d.adoc[BlockPtr]* blockPtrPtr,
    VALUE_TYPE* valuePtr);
----

[.small]#xref:BloombergLP/bslalg/DequeIterator-0d/2constructor-08.adoc[_» more..._]#


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