locale::Category

An integral type used as a mask for all types.

  typedef int category;

Each locale member function takes a locale::category argument based on a corresponding facet.

Table 1. Locale Category Facets
Category	Includes Facets
collate	collate<char>, collate<wchar_t>
ctype	ctype<char>, ctype<wchar_t>, codecvt<char,char,mbstate_t>, codecvt<wchar_t,char,mbstate_t>
messages	messages<char>, messages<wchar_t>
monetary	moneypunct<char>, moneypunct<wchar_t> moneypunct<char,true>, moneypunct<wchar_t,true>, money_get<char>, money_get<wchar_t> money_put<char>, money_put<wchar_t>
numeric	numpunct<char>, numpunct<wchar_t>, num_get<char>, num_get<wchar_t> num_put<char>, num_put<wchar_t>
time	time_get<char>, time_get<wchar_t>, time_put<char>, time_put<wchar_t>

An implementation is included for each facet template member of a category.

Table 2. Required Instantiations
Category	Includes Facets
collate	collate_byname<char>, collate_byname<wchar_t>
ctype	ctype_byname<char>, ctype_byname<wchar_t>
messages	messages_byname<char>, messages_byname<wchar_t>
monetary	moneypunct_byname<char,International>, moneypunct_byname<wchar_t,International>, money_get<C,InputIterator>, money_put<C,OutputIterator>
numeric	numpunct_byname<char>, numpunct_byname<wchar_t> num_get<C,InputIterator>, num_put<C,OutputIterator>
time	time_get<char,InputIterator>, time_get_byname<char,InputIterator>, time_get<wchar_t,OutputIterator>, time_get_byname<wchar_t,OutputIterator>, time_put<char,OutputIterator>, time_put_byname<char,OutputIterator>, time_put<wchar_t,OutputIterator> time_put_byname<wchar_t,OutputIterator>