locale - Perl pragma to use or avoid POSIX locales for built-in operations
This pragma tells the compiler to enable (or disable) the use of POSIX locales for built-in operations (for example, LC_CTYPE for regular expressions, LC_COLLATE for string comparison, and LC_NUMERIC for number formatting). Each "use locale" or "no locale" affects statements to the end of the enclosing BLOCK.
Starting in Perl 5.16, a hybrid mode for this pragma is available,
- use locale ':not_characters';
which enables only the portions of locales that don't affect the character set (that is, all except LC_COLLATE and LC_CTYPE). This is useful when mixing Unicode and locales, including UTF-8 locales.
- use locale ':not_characters';
- use open ":locale"; # Convert I/O to/from Unicode
- use POSIX qw(locale_h); # Import the LC_ALL constant
- setlocale(LC_ALL, ""); # Required for the next statement
- # to take effect
- printf "%.2f\n", 12345.67' # Locale-defined formatting
- @x = sort @y; # Unicode-defined sorting order.
- # (Note that you will get better
- # results using Unicode::Collate.)
See perllocale for more detailed information on how Perl supports locales.
If your system does not support locales, then loading this module will cause the program to die with a message:
- "Your vendor does not support locales, you cannot use the locale
- module."