Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl Monk, Perl Meditation
 
PerlMonks  

Re: confused: string and number comparison

by wwe (Friar)
on Mar 23, 2011 at 15:07 UTC ( #895011=note: print w/replies, xml ) Need Help??


in reply to confused: string and number comparison

Thank you for your answers. As lostjimmy and moritz already told the problem could be solved easily by doing string comparison. I think my problem was that perl turns a string which doesn't represent a number to zero for numerical comparison as johnqq stated.
  • Comment on Re: confused: string and number comparison

Replies are listed 'Best First'.
Re^2: confused: string and number comparison
by dsheroh (Prior) on Mar 24, 2011 at 10:35 UTC
    Note that this is not unique to Perl. Pretty much every language since C (and probably going back even further) will treat non-numeric strings as 0 when asked to treat them as numbers. Your problem is that you explicitly asked Perl to do a numeric comparison (by using ==) when that wasn't what you actually wanted.

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://895011]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others imbibing at the Monastery: (6)
As of 2016-09-28 12:37 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    Extraterrestrials haven't visited the Earth yet because:







    Results (529 votes). Check out past polls.