Beefy Boxes and Bandwidth Generously Provided by pair Networks
Do you know where your variables are?
 
PerlMonks  

lt versus le in string comparision

by Len (Friar)
on Jun 13, 2002 at 13:47 UTC ( [id://174190]=perlquestion: print w/replies, xml ) Need Help??

Len has asked for the wisdom of the Perl Monks concerning the following question: ⭐ (strings)

Can anyone explain me this: 
$char = 'a';

while ($char lt 'z')
{
   print $char;
   $char++;
}

[download]
prints as expected the characters (a..y) but if I change lt in le in the while expression: 
while ( $char le 'z' )

[download]
it prints (a..yz) instead of the expected (a..z)

Originally posted as a Categorized Question.

Replies are listed 'Best First'.
Re: lt versus le in string comparision⭐
by Abigail-II (Bishop) on Jun 13, 2002 at 14:06 UTC
    Consider this: 
        my $str = 'y';
    $str ++; print "$str\n"; 
    $str ++; print "$str\n";

    [download]
    This will print 
        z
    aa
    Now, both z and aa are less or equal to z. It isn't until you reach za that you have a string that isn't less or equal to z.

    Abigail

[reply]
[d/l]

Back to Seekers of Perl Wisdom

Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?

www.com | www.net | www.org
Node Status?
node history
Node Type: perlquestion [id://174190]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? • Last hour • Other CB clients
Other Users?
Others taking refuge in the Monastery: (3)
As of 2024-04-20 03:34 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found