28 Text processing library [text]

28.3 Localization library [localization]

28.3.3 Locales [locales]

28.3.3.2 locale globals [locale.global.templates]

🔗
template<class Facet> const Facet& use_facet(const locale& loc);
1
#
Mandates: Facet is a facet class whose definition contains the public static member id as defined in [locale.facet].
2
#
Returns: A reference to the corresponding facet of loc, if present.
3
#
Throws: bad_cast if has_facet<Facet>(loc) is false.
4
#
Remarks: The reference returned remains valid at least as long as any copy of loc exists.
🔗
template<class Facet> bool has_facet(const locale& loc) noexcept;
5
#
Returns: true if the facet requested is present in loc; otherwise false.