[#BloombergLP-bdlb-nullOpt]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlb.adoc[bdlb]::nullOpt
:relfileprefix: ../../
:mrdocs:

`bsl::nullopt` value imported into the `bdlb` namespace.

== Synopsis

Declared in `<bdlb_nullopt.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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inline constexpr xref:bsl/nullopt_t.adoc[bsl::nullopt_t] nullOpt = bsl::nullopt;
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