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# uc

Perl 5 version 12.2 documentation
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# uc

Perl functions A-Z | Perl functions by category | The 'perlfunc' manpage

- uc EXPR

- uc

  Returns an uppercased version of EXPR. This is the internal function implementing the `\U` escape in double-quoted strings. It does not attempt to do titlecase mapping on initial letters. See ucfirst for that.

  If EXPR is omitted, uses `$_` .

  This function behaves the same way under various pragma, such as in a locale, as lc does.