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.

Constructor & Destructor Documentation

std::locale::id::id ( ) [inline]

Constructor.

Definition at line 468 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.

The documentation for this class was generated from the following file:

locale_classes.h