A tag type to represent an empty optional. More...
#include <optional.hpp>
Classes | |
struct | do_not_use |
Public Member Functions | |
constexpr | nullopt_t (do_not_use, do_not_use) noexcept |
A tag type to represent an empty optional.
Definition at line 658 of file 3rdparty/tl/optional.hpp.
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inlineexplicitconstexprnoexcept |
Definition at line 660 of file 3rdparty/tl/optional.hpp.