Perl Cd Bookshelf [Electronic resources] نسخه متنی

31.14. use locale

@x = sort @y;# ASCII sorting order
{
use locale;
@x = sort @y;# Locale-defined sorting order
}
@x = sort @y;# ASCII sorting order again

This lexically scoped pragma tells the compiler to enable (or
disable, under no locale) the use of POSIX locales for built-in
operations.
Enabling locales tells Perl's case-conversion functions and pattern-matching
engine to be respectful of your language environment, allowing for
characters with diacritical markings, etc. If this pragma is in
effect and your C library knows about POSIX locales, Perl looks to
your LC_CTYPE setting for regular expressions and to
your LC_COLLATE setting for string comparisons like those in sort.

Since locales are more a form of nationalization than of internationalization, the use of locales may interact oddly with
Unicode. See Chapter 15, "Unicode" for more on internationalization.