uc

uc

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-

© 1993–2016 Larry Wall and others
Licensed under the GNU General Public License version 1 or later, or the Artistic License.
The Perl logo is a trademark of the Perl Foundation.
http://perldoc.perl.org/5.22.0/functions/uc.html

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