[#BloombergLP-bdlcc-Deque-ConstProctor]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlcc.adoc[bdlcc]::xref:BloombergLP/bdlcc/Deque.adoc[Deque]::ConstProctor
:relfileprefix: ../../../
:mrdocs:

This class defines a proctor type that provides direct const access to the underlying `bsl::deque` contained in a `Deque`.

== Synopsis

Declared in `<bdlcc_deque.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
class ConstProctor;
----

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bdlcc/Deque/ConstProctor/2constructor.adoc[`ConstProctor`]         [.small]#[constructor]#
| Create a `ConstProctor` object to provide const access to the underlying `bsl::deque` contained in the optionally specified `*container`, locking `container`s mutex. If no `container` is specified, this object will be null.
| xref:BloombergLP/bdlcc/Deque/ConstProctor/2destructor.adoc[`~ConstProctor`] [.small]#[destructor]#
| Release the lock on the mutex of the `Deque` that was provided at contstuction and destroy this `Proctor` object. The behavior is undefined if the `Deque` has been modified since the construction of this object.
| xref:BloombergLP/bdlcc/Deque/ConstProctor/isNull.adoc[`isNull`] 
| Return `true` if this object is not associated with a `Deque` object.
| xref:BloombergLP/bdlcc/Deque/ConstProctor/load.adoc[`load`] 
| In the case where this `Proctor` has been released, attach this object to the specified `container`. If this object is already attached, release the previous object first. The behavior is undefined if `0 == container`.
| xref:BloombergLP/bdlcc/Deque/ConstProctor/operator_star.adoc[`operator*`] 
| Return a reference to the `bsl::deque` managed by this `Proctor` object. The behavior is undefined if this `ConstProctor` has been released.
| xref:BloombergLP/bdlcc/Deque/ConstProctor/operator_ptr.adoc[`operator‐>`] 
| Return a pointer to the `bsl::deque` contained in the `Deque` managed by this object. The behavior is undefined if this `ConstProctor` has been released.
| xref:BloombergLP/bdlcc/Deque/ConstProctor/operator_subs.adoc[`operator[]`] 
| Return a reference providing non‐modifiable access to the element at the specified `position` in the `bsl::deque` held by this proctor. The behavior is undefined unless `position < size` where `size` is the number of elements in that deque.
| xref:BloombergLP/bdlcc/Deque/ConstProctor/release.adoc[`release`] 
| Release this proctor without destroying it. Afterward the destructor will have no effect. This may be called multiple times; only the first call has any effect;
|===



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