std::char_traits<char>::copy, std::char_traits<wchar_t>::copy, std::char_traits<char8_t>::copy, std::char_traits<char16_t>::copy, std::char_traits<char32_t>::copy
From cppreference.com
< cpp | string | char traits
| static char_type* copy( char_type* dest, const char_type* src, std::size_t count ); |
(constexpr since C++20) | |
Copies count characters from the character string pointed to by src to the character string pointed to by dest.
If [dest, dest + count) and [src, src + count) overlap, the behavior is undefined.
See CharTraits for the general requirements on character traits for X::copy.
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