Defines a type of object to be thrown by the value-returning forms of std::any_cast on failure.
[edit] Member functions constructs a newbad_any_cast object
bad_any_cast object
bad_any_cast() noexcept;
(1) (since C++17)bad_any_cast( const bad_any_cast& other ) noexcept;
(2) (since C++17)Constructs a new bad_any_cast object with an implementation-defined null-terminated byte string which is accessible through what().
1) Default constructor.
2)Copy constructor. If
*thisand
otherboth have dynamic type
std::bad_any_cast
then
std::strcmp(what(), other.what()) == 0.
Parameters other - another exception object to copy std::bad_any_cast::operator=bad_any_cast& operator=( const bad_any_cast& other ) noexcept;
(since C++17)Assigns the contents with those of other. If *this and other both have dynamic type std::bad_any_cast then std::strcmp(what(), other.what()) == 0 after assignment.
*this
std::bad_any_cast::whatvirtual const char* what() const noexcept;
(since C++17)Returns the explanatory string.
Return valuePointer to an implementation-defined null-terminated string with explanatory information. The string is suitable for conversion and display as a std::wstring. The pointer is guaranteed to be valid at least until the exception object from which it is obtained is destroyed, or until a non-const member function (e.g. copy assignment operator) on the exception object is called.
NotesImplementations are allowed but not required to override what().
std::exception) [edit] returns an explanatory string
std::exception) [edit] [edit] Example
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