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

Non‐parameterized utilities for moving and swapping deque internals.

== Synopsis

Declared in `<bslstl_deque.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
struct Deque_Util;
----

== Description

This `struct` provides a namespace to implement the `swap` member function of `deque<VALUE_TYPE, ALLOCATOR>`. This function can be implemented irrespective of the `VALUE_TYPE` or `ALLOCATOR` template parameters, which is why we implement it in this non‐parameterized, non‐inlined utility.

== Static Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:bsl/Deque_Util/move.adoc[`move`] 
| Move the raw deque at `src` into `dst` and reset `src`.
| xref:bsl/Deque_Util/swap.adoc[`swap`] 
| Exchange the values of the deques at `a` and `b`.
|===



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