20 General utilities library [utilities]

20.6 Optional objects [optional]

20.6.5 Class bad_optional_access [optional.bad.access]

class bad_optional_access : public logic_error {
public:
  bad_optional_access();
};
1

The class bad_optional_access defines the type of objects thrown as exceptions to report the situation where an attempt is made to access the value of an optional object that does not contain a value.

bad_optional_access();

2

Effects: Constructs an object of class bad_optional_access.

3

Postconditions: what() returns an implementation-defined ntbs.