对码当歌,猿生几何?

std::bad_any_cast

From cppreference.com
< cpp‎ | utility‎ | any
Defined in header <any>
class bad_any_cast : public std::bad_cast;
(since C++17)

Defines a type of object to be thrown by the value-returning forms of std::any_cast on failure.

Inherited from std::exception

Member functions

[virtual]
destructs the exception object
(virtual public member function of std::exception)
[virtual]
returns an explanatory string
(virtual public member function of std::exception)