std::locale::id(3)std::locale::id(3)NAME
std::locale::id -
SYNOPSIS
Public Member Functions
id ()
size_t _M_id () const throw ()
Friends
template<typename _Facet > bool has_facet (const locale &) throw ()
class locale
class locale::_Impl
template<typename _Facet > const _Facet & use_facet (const locale &)
Detailed Description
Facet ID class.
The ID class provides facets with an index used to identify them. Every
facet class must define a public static member locale::id, or be
derived from a facet that provides this member, otherwise the facet
cannot be used in a locale. The locale::id ensures that each class type
gets a unique identifier.
Definition at line 436 of file locale_classes.h.
Constructor & Destructor Documentation
std::locale::id::id () [inline]
Constructor.
Definition at line 467 of file locale_classes.h.
Friends And Related Function Documentation
template<typename _Facet > bool has_facet (const locale &) [friend]
Test for the presence of a facet.
has_facet tests the locale argument for the presence of the facet type
provided as the template parameter. Facets derived from the facet
parameter will also return true.
Template Parameters:
_Facet The facet type to test the presence of.
Parameters:
__loc The locale to test.
Returns:
true if __loc contains a facet of type _Facet, else false.
Definition at line 104 of file locale_classes.tcc.
template<typename _Facet > const _Facet& use_facet (const locale &)
[friend]
Return a facet.
use_facet looks for and returns a reference to a facet of type Facet
where Facet is the template parameter. If has_facet(locale) is true,
there is a suitable facet to return. It throws std::bad_cast if the
locale doesn't contain a facet of type Facet.
Template Parameters:
_Facet The facet type to access.
Parameters:
__loc The locale to use.
Returns:
Reference to facet of type Facet.
Exceptions:
std::bad_cast if __loc doesn't contain a facet of type _Facet.
Definition at line 132 of file locale_classes.tcc.
Author
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libstdc++ Wed Nov 6 2013 std::locale::id(3)
