std::locale::id(3)std::locale::id(3)NAME
std::locale::id -
Facet ID class.
SYNOPSIS
Public Member Functions
size_t _M_id () const
id ()
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 426 of file locale_classes.h.
Constructor & Destructor Documentation
std::locale::id::id () [inline]
Constructor.
Definition at line 457 of file locale_classes.h.
Friends And Related Function Documentation
template<typename _Facet > bool has_facet (const locale &) throw ()
[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.
Parameters:
Facet The facet type to test the presence of.
locale The locale to test.
Returns:
true if locale contains a facet of type Facet, else false.
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.
Parameters:
Facet The facet type to access.
locale The locale to use.
Returns:
Reference to facet of type Facet.
Exceptions:
std::bad_cast if locale doesn't contain a facet of type Facet.
Author
Generated automatically by Doxygen for libstdc++ from the source code.
libstdc++ 22 Nov 2013 std::locale::id(3)
