[#BloombergLP-bslalg-DequePrimitives_DequeEndpointProctor]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslalg.adoc[bslalg]::DequePrimitives_DequeEndpointProctor
:relfileprefix: ../../
:mrdocs:

Proctor that restores a deque endpoint iterator on destruction.

== Synopsis

Declared in `<bslalg_dequeprimitives.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class VALUE_TYPE,
    int BLOCK_LENGTH>
class DequePrimitives_DequeEndpointProctor;
----

== Description

This class implements a proctor that, upon destruction and unless its `release` method has previously been invoked, sets a deque endpoint (i.e., "start" or "finish" iterator) to a position within the deque. Both the endpoint and position are supplied at construction. See `emplaceAndMoveToBack` and `emplaceAndMoveToFront` for use cases.

== Type Aliases

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslalg/DequePrimitives_DequeEndpointProctor/Iterator.adoc[`Iterator`] 
| Iterator type for the managed deque endpoint.
|===


== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslalg/DequePrimitives_DequeEndpointProctor/2constructor.adoc[`DequePrimitives_DequeEndpointProctor`]         [.small]#[constructor]#
| Create a proctor that restores `endpoint` to `position` on destruction.
| xref:BloombergLP/bslalg/DequePrimitives_DequeEndpointProctor/2destructor.adoc[`~DequePrimitives_DequeEndpointProctor`] [.small]#[destructor]#
| Restore the proctored deque endpoint on destruction.
| xref:BloombergLP/bslalg/DequePrimitives_DequeEndpointProctor/release.adoc[`release`] 
| Release from management the deque endpoint currently managed by this proctor. If no endpoint is currently being managed, this method has no effect.
|===



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