std::experimental::nullopt_t - Tag type to disengage optional objects.

       Generated automatically by Doxygen for libstdc++ from the source code.

                                                    libstdc++                 std::experimental::nullopt_t(3cxx)

       Tag type to disengage optional objects.

       std::experimental::nullopt_t - Tag type to disengage optional objects.

       #include <optional>

   PublicTypes
       enum class _Construct { _Token }

   PublicMemberFunctions
       constexpr nullopt_t (_Construct)