typeinfo

This header is part of the type support library.

Classes

type_info	contains some type's information, generated by the implementation. This is the class returned by the typeid operator. (class)
bad_typeid	exception that is thrown if an argument in a typeid expression is null (class)
bad_cast	exception that is thrown by an invalid `dynamic_cast` expression, i.e. a cast of reference type fails (class)

Synopsis

namespace std {
    class type_info;
    class bad_cast;
    class bad_typeid;
}

Class `std::type_info`

class type_info {
public:
    virtual ~type_info();
    bool operator==(const type_info& rhs) const noexcept;
    bool operator!=(const type_info& rhs) const noexcept;
    bool before(const type_info& rhs) const noexcept;
    size_t hash_code() const noexcept;
    const char* name() const noexcept;
    type_info(const type_info& rhs) = delete;
    // cannot be copied
    type_info& operator=(const type_info& rhs) = delete; // cannot be copied
};

Class `std::bad_cast`

class bad_cast : public exception {
public:
    bad_cast() noexcept;
    bad_cast(const bad_cast&) noexcept;
    bad_cast& operator=(const bad_cast&) noexcept;
    virtual const char* what() const noexcept;
};

Class `std::bad_typeid`

class bad_typeid : public exception {
public:
    bad_typeid() noexcept;
    bad_typeid(const bad_typeid&) noexcept;
    bad_typeid& operator=(const bad_typeid&) noexcept;
    virtual const char* what() const noexcept;
};

Links:

http://en.cppreference.com/w/cpp/header/typeinfo

doc_CPP

2025-01-10 15:47:30

Comments

typeinfo

Classes

Synopsis

Class std::type_info

Class std::bad_cast

Class std::bad_typeid

Class `std::type_info`

Class `std::bad_cast`

Class `std::bad_typeid`