std::locale::id Class Reference

Facet ID class. More...

#include <locale_classes.h>

List of all members.

Public Member Functions
	id ()
	Constructor.
Friends
template<typename Facet>
const Facet &	use_facet (const locale &)
	Return a facet.
template<typename Facet>
bool	has_facet (const locale &) throw ()
	Test for the presence of a facet.

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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 434 of file locale_classes.h.

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Constructor & Destructor Documentation

std::locale::id::id (   )  [inline]

Constructor. Definition at line 465 of file locale_classes.h.

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Friends And Related Function Documentation

template<typename Facet> bool has_facet (  const locale &  __loc  )  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. Definition at line 85 of file locale_facets.tcc.

template<typename Facet> const Facet& use_facet (  const locale &  __loc  )  [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. Definition at line 107 of file locale_facets.tcc.

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

• locale_classes.h
• locale.cc

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