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<typeinfo>
type_info
hash_code
public member function
<typeinfo>
std::
type_info
::hash_code
size_t hash_code() const noexcept;
Get type hash code
Returns a hash code value that identifies the type.
This function returns the same value for any two
type_info
objects that compare equal.
The particular values returned are implementation-defined and may vary between executions of the same program.
Parameters
none
Return Value
A value that identifies the type (runtime constant).
size_t
is an unsigned integral type.
Exception safety
No-throw guarantee:
this member function never throws exceptions.
See also
type_info::name
Get type name
( public member function )
C++
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C library:
<cassert> (assert.h)
<cctype> (ctype.h)
<cerrno> (errno.h)
<cfenv> (fenv.h)
<cfloat> (float.h)
<cinttypes> (inttypes.h)
<ciso646> (iso646.h)
<climits> (limits.h)
<clocale> (locale.h)
<cmath> (math.h)
<csetjmp> (setjmp.h)
<csignal> (signal.h)
<cstdarg> (stdarg.h)
<cstdbool> (stdbool.h)
<cstddef> (stddef.h)
<cstdint> (stdint.h)
<cstdio> (stdio.h)
<cstdlib> (stdlib.h)
<cstring> (string.h)
<ctgmath> (tgmath.h)
<ctime> (time.h)
<cuchar> (uchar.h)
<cwchar> (wchar.h)
<cwctype> (wctype.h)
Containers:
<array>
<deque>
<forward_list>
<list>
<map>
<queue>
<set>
<stack>
<unordered_map>
<unordered_set>
<vector>
Input/Output:
<fstream>
<iomanip>
<ios>
<iosfwd>
<iostream>
<istream>
<ostream>
<sstream>
<streambuf>
Multi-threading:
<atomic>
<condition_variable>
<future>
<mutex>
<thread>
Other:
<algorithm>
<bitset>
<chrono>
<codecvt>
<complex>
<exception>
<functional>
<initializer_list>
<iterator>
<limits>
<locale>
<memory>
<new>
<numeric>
<random>
<ratio>
<regex>
<stdexcept>
<string>
<system_error>
<tuple>
<type_traits>
<typeindex>
<typeinfo>
<utility>
<valarray>
<typeinfo>
bad_cast
bad_typeid
type_info
type_info
member functions:
type_info::before
type_info::hash_code
type_info::name
type_info::operator!=
type_info::operator==