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

This `class` provides a guard object that, upon destruction and unless the `release` method has been called, uses `moveBack` or `moveFront` to move the "guarded" range `[d_source_p .. d_source_p + d_size ‐ 1]` back to `[d_destination_p .. d_destination_p + d_size ‐1]`.

== Synopsis

Declared in `<bslalg_dequeprimitives.h>`

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

== Type Aliases

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslalg/DequePrimitives_DequeMoveGuard/DequePrimitives.adoc[`DequePrimitives`] 
| This `typedef` is an alias for `DequePrimitives`.
| xref:BloombergLP/bslalg/DequePrimitives_DequeMoveGuard/Iterator.adoc[`Iterator`] 
| This `typedef` is an alias to `DequeIterator<VALUE_TYPE, BLOCK_LENGTH>`.
|===


== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslalg/DequePrimitives_DequeMoveGuard/2constructor.adoc[`DequePrimitives_DequeMoveGuard`]         [.small]#[constructor]#
| Create a guard object that will call `moveBack` or `moveFront`, depending on the specified `isFront`, on the specified `size` elements from `src` to `dest` upon destruction unless `release` has been called.
| xref:BloombergLP/bslalg/DequePrimitives_DequeMoveGuard/2destructor.adoc[`~DequePrimitives_DequeMoveGuard`] [.small]#[destructor]#
| Call either `moveBack` or `moveFront` depending on `d_front` upon destruction unless `release` has been called before this.
| xref:BloombergLP/bslalg/DequePrimitives_DequeMoveGuard/release.adoc[`release`] 
| Set the size of the range guarded by this object to be zero.
|===



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