[#BloombergLP-bslstl-Optional_IsBslOptional-0d]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::xref:BloombergLP/bslstl/Optional_IsBslOptional-07.adoc[Optional&lowbar;IsBslOptional]&lt;xref:bsl/optional-072.adoc[bsl::optional&lt;t&lowbar;TYPE&gt;]&gt;
:relfileprefix: ../../
:mrdocs:

Specialization that is `true&lowbar;type` for `bsl&colon;&colon;optional` types&period;

== Synopsis

Declared in `&lt;bslstl&lowbar;optional&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template&lt;class t&lowbar;TYPE&gt;
struct xref:BloombergLP/bslstl/Optional_IsBslOptional-07.adoc[Optional&lowbar;IsBslOptional]&lt;xref:bsl/optional-072.adoc[bsl::optional&lt;t&lowbar;TYPE&gt;]&gt;
    : xref:bsl/true_type.adoc[bsl::true&lowbar;type]
----

== Base Classes

[cols="1,4"]
|===
| Name| Description
| `xref:bsl/true_type.adoc[bsl::true&lowbar;type]`
| Metafunction representing the boolean constant `true`&period;
|===


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