[#BloombergLP-bslstl-Optional_IsBslOptional-0d] = xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::xref:BloombergLP/bslstl/Optional_IsBslOptional-07.adoc[Optional_IsBslOptional]<xref:bsl/optional-072.adoc[bsl::optional<t_TYPE>]> :relfileprefix: ../../ :mrdocs: == Synopsis Declared in `<bslstl_optional.h>` [source,cpp,subs="verbatim,replacements,macros,-callouts"] ---- template<class t_TYPE> struct xref:BloombergLP/bslstl/Optional_IsBslOptional-07.adoc[Optional_IsBslOptional]<xref:bsl/optional-072.adoc[bsl::optional<t_TYPE>]> : xref:bsl/true_type.adoc[bsl::true_type] ---- == Base Classes [cols="1,4"] |=== | Name| Description | `xref:bsl/true_type.adoc[bsl::true_type]` | Metafunction representing the boolean constant `true`. |=== [.small]#Created with https://www.mrdocs.com[MrDocs]#