std::type_index::name

 

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ptrdiff_t size_t max_align_t (C++11)     byte (C++17)	nullptr_t (C++11) offsetof NULL
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numeric_limits
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Runtime type information
type_info type_index (C++11)	bad_typeid bad_cast

 

std::type_index

Member functions

type_index::type_index

type_index::operator=type_index::operator!=type_index::operator<type_index::operator<=type_index::operator>type_index::operator>=type_index::operator<=> (until C++20)(C++20)

type_index::hash_code

type_index::name

Helper classes

hash<std::type_index> (C++11)

 

const char* name() const noexcept;		(since C++11)

See More

Returns the name of the associated std::type_info object. Equivalent to calling std::type_info::name() directly.

Return value

The name of the associated std::type_info object.

Example

Run this code

#include <iostream>
#include <typeindex>

#ifdef __has_include
#   if __has_include(<meta>)
#       include <meta>
#   endif
#endif

int main()
{
    std::cout << std::type_index(typeid(std::cout)).name() << '\n';

#ifdef __cpp_lib_reflection
    std::cout << std::meta::display_string_of(^^std::cout) << '\n';
#endif
}

Possible output:

NSt3__113basic_ostreamIcNS_11char_traitsIcEEEE
std::cout

Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR	Applied to	Behavior as published	Correct behavior
LWG 2144	C++11	type_index::name was not required to be noexcept	required

See also

display_string_ofu8display_string_of (C++26)(C++26)	obtains a string suitable for identifying the reflected entity (function)
identifier_ofu8identifier_of (C++26)(C++26)	if the reflected entity has an identifier, obtains its name (function)