FreeBSD Manual Pages
std::wstrin...t::converted(3) C++ Standard Libarystd::wstrin...t::converted(3) NAME std::wstring_convert::converted - std::wstring_convert::converted Synopsis Defined in header <locale> std::size_t converted() const noexcept; Returns the number of source characters that were processed by the most recent from_bytes() or to_bytes(). Return value The number of characters consumed by the most recent conversion op- eration. Example // Run this code #include <iostream> #include <string> #include <locale> #include <codecvt> int main() { std::string utf8 = u8"z\u00df\u6c34\U0001d10b"; // or u8"z" // or "\x7a\xc3\x9f\xe6\xb0\xb4\xf0\x9d\x84\x8b"; std::cout << "original UTF-8 string size: " << utf8.size() << '\n'; // the UTF-8 - UTF-32 standard conversion facet std::wstring_convert<std::codecvt_utf8<char32_t>, char32_t> cvt; // UTF-8 to UTF-32 std::u32string utf32 = cvt.from_bytes(utf8); std::cout << "UTF-32 string size: " << utf32.size() << '\n'; std::cout << "converted() == " << cvt.converted() << '\n'; // UTF-32 to UTF-8 utf8 = cvt.to_bytes(utf32); std::cout << "new UTF-8 string size: " << utf8.size() << '\n'; std::cout << "converted() == " << cvt.converted() << '\n'; } Output: original UTF-8 string size: 10 UTF-32 string size: 4 converted() == 10 new UTF-8 string size: 10 converted() == 4 Defect reports The following behavior-changing defect reports were applied retroac- tively to previously published C++ standards. DR Applied to Behavior as published Correct behavior LWG 2174 C++11 wstring_convert::converted was not required to required be noexcept See also to_bytes converts a wide string into a byte string (public member function) from_bytes converts a byte string into a wide string (public member function) http://cppreference.com 2022.07.31 std::wstrin...t::converted(3)
NAME | Synopsis | Return value | Example | Output: | See also
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=std::wstring_convert::converted&sektion=3&manpath=FreeBSD+Ports+15.0>