[#BloombergLP-bslstl-Optional_DerivedFromBslOptional]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::Optional_DerivedFromBslOptional
:relfileprefix: ../../
:mrdocs:

Component‐private concept that is satisfied when `t_TYPE` derives from `bsl::optional`.

== Synopsis

Declared in `<bslstl_optional.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class t_TYPE>
concept Optional_DerivedFromBslOptional = requires (const t_TYPE& t) { optional_acceptsBslOptional(t); };
----


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