Provided by: libstdc++-5-doc_5.4.0-6ubuntu1~16.04.12_all 

NAME
std::experimental::nullopt_t -
SYNOPSIS
Public Types
enum _Construct { _Token }
Public Member Functions
constexpr nullopt_t (_Construct)
Detailed Description
Tag type to disengage optional objects.
Definition at line 93 of file optional.
Author
Generated automatically by Doxygen for libstdc++ from the source code.
libstdc++ Fri Oct 4 2019 std::experimental::nullopt_t(3cxx)