libstdc++
std::locale::id Class Reference

List of all members.

Public Member Functions

Friends


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 438 of file locale_classes.h.


Constructor & Destructor Documentation

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

Constructor.

Definition at line 469 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.

Template Parameters:
_FacetThe facet type to test the presence of.
Parameters:
__locThe locale to test.
Returns:
true if __loc contains a facet of type _Facet, else false.

Definition at line 103 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:
_FacetThe facet type to access.
Parameters:
__locThe locale to use.
Returns:
Reference to facet of type Facet.
Exceptions:
std::bad_castif __loc doesn't contain a facet of type _Facet.

Definition at line 130 of file locale_classes.tcc.


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