Sent: Saturday, June 18, 2005 12:58 PM
To: beginners@perl.org
Subject: change char, keep case
Hi all,
quite interesting, how you would write this without $temp:
use strict;
use warnings;
my $first = 'B';
my $second = 'a';
($first, $second) = ($second , $first);
print $first, "\n";
print $second, "\n";
but I want keep case of chars, so output is:
"Ab"
Have a nice day :)
Have you read perldoc ?
DEV,SUN2>perldoc -f uc
uc EXPR
uc 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 perllocale and
perlunicode 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 $_.
DEV,SUN2>perldoc -f ucfirst
ucfirst EXPR
ucfirst Returns the value of EXPR with the first character
in uppercase (titlecase in Unicode). This is the
internal function implementing the "\u" escape in
double-quoted strings. Respects current LC_CTYPE
locale if "use locale" in force. See perllocale and
perlunicode for more details about locale and
Unicode support.
If EXPR is omitted, uses $_.
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