NAME¶

std::locale::facet - std::locale::facet

Synopsis¶

Defined in header <locale>
class locale::facet;

std::locale::facet is the base class for facets. It provides a common base class so
that locales could store pointers to the facets they implement in a single indexed
container, and it abstracts support for facet reference counting.

Whenever a facet is added to a locale, the locale increments the reference count in
the facet (through an implementation-specific mechanism). Whenever a locale is
destructed or modified, it decrements the reference count in each facet it no longer
implements. Whenever a facet's reference count becomes zero, the locale performs
delete static_cast<std::locale::facet*>(f); where f is the pointer to the facet.

Member functions¶

constructor constructs a new facet with specified reference count
(protected member function)
operator= the copy assignment operator is deleted
(protected member function)
destructor the destructor is protected virtual
[virtual] (virtual protected member function)

Example¶

This section is incomplete
Reason: no example

Defect reports

The following behavior-changing defect reports were applied retroactively to
previously published C++ standards.

DR Applied to Behavior as published Correct behavior
LWG 2694 C++98 the definition of 'facet' was removed by added the definition
the resolution of LWG issue 436 back

See also¶

the facet index type: each facet class must declare or inherit a public static
id member of this type
(class)

Category:¶

* Todo no example