cpp/header/typeindex: Difference between revisions
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Revision as of 14:17, 24 March 2020
This header is part of the types support library.
Classes
(C++11) |
wrapper around a type_info object, that can be used as index in associative and unordered associative containers (class) |
(C++11) |
hash support for std::type_index (class template specialization) |
Forward declarations | |
Defined in header
<functional> | |
(C++11) |
hash function object (class template) |
Synopsis
namespace std {
class type_index;
template <class T> struct hash;
template<> struct hash<type_index>;
}
Class std::type_index
class type_index {
public:
type_index(const type_info& rhs) noexcept;
bool operator==(const type_index& rhs) const noexcept;
bool operator!=(const type_index& rhs) const noexcept;
bool operator< (const type_index& rhs) const noexcept;
bool operator<= (const type_index& rhs) const noexcept;
bool operator> (const type_index& rhs) const noexcept;
bool operator>= (const type_index& rhs) const noexcept;
size_t hash_code() const;
const char* name() const;
private:
const type_info* target; // exposition only
// Note that the use of a pointer here, rather than a reference,
// means that the default copy/move constructor and assignment
// operators will be provided and work as expected.
};