What is C++ locale?

Localization library. A locale is a set of features that are culture-specific, which can be used by programs to be more portable internationally. In C++, locales are represented by an object of the locale class. Each of these locale objects contains all the information needed to use a set of culture-dependent features.

What is std:: locale?

std::locale class locale; An object of class std::locale is an immutable indexed set of immutable facets. Locale objects can also be used as predicates that perform string collation with the standard containers and algorithms and can be accessed directly to obtain or modify the facets they hold.

What is a C++ facet?

A facet is a class describing a locale feature set associated to a specific cultural aspect. Custom facets may be created by inheriting this member class (either directly or indirectly), and by containing a static member of type locale::id and a set of features as const-qualified member functions.

How to set locale in C++?

int setlocale(int category, const char* locale); The setlocale function is used to set a specified system locale for the given category . The setlocale function can also be used to query the current C locale. This can be done by passing a null pointer in place of locale.

Where can I find the source code for locale?

Source code: Lib/locale.py The locale module opens access to the POSIX locale database and functionality. The POSIX locale mechanism allows programmers to deal with certain cultural issues in an application, without requiring the programmer to know all the specifics of each country where the software is executed.

What does the name of the locale mean?

For example, the locale English (United States) has the language name “en-US”. A “locale” is a collection of language-related user preference information represented as a list of values.

Can a language correspond to a locale identifier?

Starting with Windows Vista, it is possible for a particular language to correspond to a supplemental locale, which is a type of custom locale. Since supplemental locales all share a single locale identifier, your applications should handle these locales and the corresponding languages by name instead of by identifier.

What does setlocale do in locale in Python?

If locale is given and not None, setlocale() modifies the locale setting for the category. The available categories are listed in the data description below. locale may be a string, or an iterable of two strings (language code and encoding). If it’s an iterable, it’s converted to a locale name using the locale aliasing engine.