std::experimental::bad_optional_access - Exception class thrown when a disengaged optional object is

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

       Exception class thrown when a disengaged optional object is dereferenced.

virtualconstchar*std::logic_error::what()const[virtual],[noexcept],[inherited]
       Returns a C-style character string describing the general cause of the current error (the same string
       passed to the ctor).

       Reimplemented from std::exception.

       Reimplemented in std::future_error.

       std::experimental::bad_optional_access - Exception class thrown when a disengaged optional object is
       dereferenced.

       #include <optional>

       Inherits std::logic_error.

   PublicMemberFunctionsbad_optional_access (const char *__arg)
       virtual const char * what () const noexcept