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Defined in header <locale> | ||
template< class CharT, | ||
std::time_put_byname is astd::time_put facet which encapsulates time and date formatting rules of the locale specified at its construction.
Contents |
The standard library is guaranteed to provide every specialization that satisfies the following type requirements:
CharT is one ofchar andwchar_t, andOutputIt must meet the requirements ofLegacyOutputIterator.| Type | Definition |
char_type | CharT |
iter_type | OutputIt |
(constructor) | constructs a newtime_put_byname facet(public member function)[edit] |
(destructor) | destroys atime_put_byname facet(protected member function)[edit] |
explicit time_put_byname(constchar* name,std::size_t refs=0); | ||
explicit time_put_byname(conststd::string& name,std::size_t refs=0); | (since C++11) | |
Constructs a newstd::time_put_byname facet for a locale withname.
refs is used for resource management: ifrefs==0, the implementation destroys the facet, when the laststd::locale object holding it is destroyed. Otherwise, the object is not destroyed.
| name | - | the name of the locale |
| refs | - | the number of references that link to the facet |
protected: ~time_put_byname(); | ||
Destroys the facet.
| Member | Description |
std::locale::idid[static] | the identifier of thefacet |
invokesdo_put(public member function of std::time_put<CharT,OutputIt>)[edit] |
[virtual] | formats date/time and writes to output stream (virtual protected member function of std::time_put<CharT,OutputIt>)[edit] |
Prints current time using the "C" locale with thetime_put facet replaced by variousstd::time_put_byname facets. The result shown was obtained using the clang compiler.
#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_byname<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_byname<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_byname<wchar_t>("sv_SE.utf8"))); out<<std::put_time(std::localtime(&t), L"%A %c")<<'\n';}
Possible output:
木曜日 2023年10月05日 19時44分51秒Четверг Чт 05 окт 2023 19:44:51torsdag tor 5 okt 2023 19:44:51
| formats contents ofstd::tm for output as character sequence (class template)[edit] |
