[#bsl-Deque_Guard-2constructor]
= xref:bsl.adoc[bsl]::xref:bsl/Deque_Guard.adoc[Deque_Guard]::Deque_Guard
:relfileprefix: ../../
:mrdocs:

Create a guard for uncommitted elements at one end of `deque`.

== Synopsis

Declared in `<bslstl_deque.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
Deque_Guard(
    xref:bsl/deque-0c.adoc[deque<VALUE_TYPE, ALLOCATOR>]* deque,
    bool isTail);
----

== Description

Initializes object to guard 0 items from the specified `deque`. This guards either the tail or the head, as determined by the specified `isTail` boolean.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *deque*
| deque whose uncommitted elements are guarded
| *isTail*
| `true` to guard the back; `false` to guard the front
|===


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