[#bsl-Deque_BlockProctor]
= xref:bsl.adoc[bsl]::Deque_BlockProctor
:relfileprefix: ../
:mrdocs:

Proctor that deallocates empty blocks at one end of a deque.

== Synopsis

Declared in `<bslstl_deque.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class VALUE_TYPE,
    class ALLOCATOR>
class Deque_BlockProctor;
----

== Description

This class implements a proctor that, upon destruction and unless its `release` method has previously been invoked, deallocates empty blocks at one end (i.e., front or back) of a proctored deque. The end at which empty blocks are to be proctored is indicated by a flag supplied at construction. See `emplace` for a use case.

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:bsl/Deque_BlockProctor/2constructor.adoc[`Deque_BlockProctor`]         [.small]#[constructor]#
| Create a proctor for empty blocks at one end of `deque`.
| xref:bsl/Deque_BlockProctor/2destructor.adoc[`~Deque_BlockProctor`] [.small]#[destructor]#
| Destroy this proctor and deallocate empty blocks at the proctored end.
| xref:bsl/Deque_BlockProctor/release.adoc[`release`] 
| Release from management the deque currently managed by this proctor. If no deque is currently being managed, this method has no effect.
|===



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