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<typeindex>
type_index
hash_code
public member function
<typeindex>
std::
type_index
::hash_code
size_t hash_code() const;
size_t hash_code() const noexcept;
Get type hash code
Returns a hash code value that identifies the type currently referenced to by the object.
Internally, the function simply returns the result of calling member
hash_code
on the
type_info
it refers to.
This function returns the same value for any two
type_index
objects that
compare equal
.
Parameters
none
Return Value
A value that identifies the type (runtime constant).
size_t
is an unsigned integral type.
Data races
No data races are initiated by this member function.
Exception safety
No-throw guarantee:
never throws exceptions.
See also
type_info::hash_code
Get type hash code
( public member function )
type_index::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)
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Other:
<algorithm>
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<functional>
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<tuple>
<type_traits>
<typeindex>
<typeinfo>
<utility>
<valarray>
<typeindex>
classes:
type_index
type_index
type_index::type_index
member functions:
type_index::hash_code
type_index::name
type_index::operator
non-member specializations:
hash<type_index>