[#BloombergLP-bslstl-StopCallback_CallbackStorage-05]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::xref:BloombergLP/bslstl/StopCallback_CallbackStorage-06.adoc[StopCallback_CallbackStorage]<t_CALLBACK, true>
:relfileprefix: ../../
:mrdocs:

This partial specialization stores a reference to a callback.

== Synopsis

Declared in `<bslstl_stoptoken.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class t_CALLBACK>
class xref:BloombergLP/bslstl/StopCallback_CallbackStorage-06.adoc[StopCallback_CallbackStorage]<t_CALLBACK, true>;
----

== Type Aliases

[cols="1"]
|===
| Name
| xref:BloombergLP/bslstl/StopCallback_CallbackStorage-05/allocator_type.adoc[`allocator_type`] 
|===


== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslstl/StopCallback_CallbackStorage-05/2constructor-0b.adoc[`StopCallback_CallbackStorage`]         [.small]#[constructor]#
| Initialize the stored reference by forwarding the specified `arg`. Note that the allocator argument is ignored because references are never allocator‐aware.
| xref:BloombergLP/bslstl/StopCallback_CallbackStorage-05/callback.adoc[`callback`] 
| Return an lvalue referring to the callback.
|===



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