Standard C++ Library
Copyright 1998, Rogue Wave Software, Inc.
- A family of classes used to encapsulate categories of
The Standard C++ Localization library includes a locale
interface that contains a collection of diverse facets. Each
facet has localization facilities for some specific area,
such as character classification or numeric formatting. Each
facet also falls into one or more broad categories. These
categories are defined in the locale class, and the standard
facets fit into these categories as follows.
collate collate, collate_byname
ctype ctype, codecvt, ctype_byname, codecvt_byname
monetary moneypunct, moneypunct_byname,
numeric numpunct, numpunct_byname, num_put, num_get
time time_put, time_put_byname,
messages messages, messages_byname
A facet must satisfy two properties. First, it must be
derived from the base class locale::facet, either directly
or indirectly (for example, facet -> ctype<char> ->
my_ctype). Second, it must contain a member of type
locale::id. This ensures that the locale class can manage
its collection of facets properly.
locale, specific facet reference sections