An empty class type used to indicate optional type with uninitialized state. More...
#include <optional.hpp>
Public Member Functions | |
constexpr | nullopt_t (int) |
An empty class type used to indicate optional type with uninitialized state.
Definition at line 28 of file optional.hpp.
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inlineexplicitconstexpr |
Definition at line 30 of file optional.hpp.