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std::time_put_byname(3) C++ Standard Libary std::time_put_byname(3) NAME std::time_put_byname - std::time_put_byname Synopsis Defined in header <locale> template< class CharT, class OutputIt = std::ostreambuf_iterator<CharT> > class time_put_byname : public std::time_put<CharT, OutputIt>; std::time_put_byname is a std::time_put facet which encapsulates time and date formatting rules of the locale specified at its construction. Specializations The standard library is guaranteed to provide every specialization that satisfies the following type requirements: * CharT is one of char and wchar_t, and * OutputIt must meet the requirements of LegacyOutputIterator. Member types Member type Definition char_type CharT iter_type OutputIt Member functions constructor constructs a new time_put_byname facet (public member function) destructor destroys a time_put_byname facet (protected member function) std::time_put_byname::time_put_byname explicit time_put_byname( const char* name, std::size_t refs = 0 ); explicit time_put_byname( const std::string& name, std::size_t refs = (since C++11) 0 ); Constructs a new std::time_put_byname facet for a locale with name. refs is used for resource management: if refs == 0, the implementa- tion destroys the facet, when the last std::locale object holding it is destroyed. Otherwise, the object is not destroyed. Parameters name - the name of the locale refs - the number of references that link to the facet std::time_put_byname::~time_put_byname protected: ~time_put_byname(); Destroys the facet. Inherited from std::time_put Member objects Member name Type id (static) std::locale::id Member functions put invokes do_put (public member function of std::time_put<CharT,OutputIt>) Protected member functions do_put formats date/time and writes to output stream [virtual] (virtual protected member function of std::time_put<CharT,OutputIt>) Example Prints current time using the "C" locale with the time_put facet re- placed by various std::time_put_byname facets. The result shown was obtained using the clang compiler. // Run this code #include <codecvt> #include <ctime> #include <iomanip> #include <iostream> int main() { std::time_t t = std::time(nullptr); std::wbuffer_convert<std::codecvt_utf8<wchar_t>> conv(std::cout.rdbuf()); std::wostream out(&conv); out.imbue(std::locale(out.getloc(), new std::time_put_by- name<wchar_t>("ja_JP.utf8"))); out << std::put_time(std::localtime(&t), L"%A %c") << '\n'; out.imbue(std::locale(out.getloc(), new std::time_put_by- name<wchar_t>("ru_RU.utf8"))); out << std::put_time(std::localtime(&t), L"%A %c") << '\n'; out.imbue(std::locale(out.getloc(), new std::time_put_by- name<wchar_t>("sv_SE.utf8"))); out << std::put_time(std::localtime(&t), L"%A %c") << '\n'; } Possible output: 20231005 194451 05 2023 19:44:51 torsdag tor 5 okt 2023 19:44:51 See also time_put formats contents of std::tm for output as character se- quence (class template) http://cppreference.com 2024.06.10 std::time_put_byname(3)
NAME | Synopsis | Specializations | Member types | Member functions | Parameters | Member objects | Member functions | Protected member functions | Example | Possible output: | See also
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