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

Re: if statement question

by nithins (Sexton)
on Dec 14, 2012 at 06:57 UTC ( #1008783=note: print w/ replies, xml ) Need Help??


in reply to if statement question

use strict; ## scalar has not been initialized here the value in $result is undef my $result; print "hi" if ($result); ### scalar has been initialized and the value here is 12 $result = 12; print $result if($result);

In 1st ,if condition looks for the value of a variable "$result" in this case its just declared its not been initialized hence if is evaluated as false and doesn't print "Hi"

In second, if condition looks for the value of a variable, its present & value is 12 , then if is evaluated as true and it print's "hi".


Comment on Re: if statement question
Download Code

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1008783]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others meditating upon the Monastery: (4)
As of 2015-07-05 03:33 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (60 votes), past polls