uc - return upper-case version of a string

- NAME
- SYNOPSIS
- DESCRIPTION

# NAME

uc - return upper-case version of a string

# SYNOPSIS

uc EXPR

uc

# DESCRIPTION

Returns an uppercased version of EXPR. This is the internal function implementing the `\U` escape in double-quoted strings. Respects current LC_CTYPE locale if `use locale` in force. See the perllocale manpage and the perlunicode manpage for more details about locale and Unicode support. It does not attempt to do titlecase mapping on initial letters. See `ucfirst` for that.

If EXPR is omitted, uses `$_`.

uc - return upper-case version of a string