Beefy Boxes and Bandwidth Generously Provided by pair Networks
We don't bite newbies here... much
 
PerlMonks  

Re^2: Update: problem with scalar

by sargg55 (Novice)
on Apr 24, 2016 at 03:14 UTC ( [id://1161349]=note: print w/replies, xml ) Need Help??


in reply to Re: Update: problem with scalar
in thread Update: problem with scalar

Thanks !, fixed that, and now it spawned another problem 
Use of uninitialized value in addition (+) at a18.pl line 27.
Use of uninitialized value in addition (+) at a18.pl line 27.
Use of uninitialized value in subtraction (-) at a18.pl line 28.
Use of uninitialized value in subtraction (-) at a18.pl line 28.
Use of uninitialized value in division (/) at a18.pl line 29.
Use of uninitialized value in division (/) at a18.pl line 29.
Illegal division by zero at a18.pl line 29.

[download]
sigh

Replies are listed 'Best First'.
Re^3: Update: problem with scalar
by tangent (Parson) on Apr 24, 2016 at 04:17 UTC
    You should print out your @array to make sure it contains what you think it does: 
    use Data::Dumper;
# ...
# build @array
# ...
print Dumper( \@array );

    [download]
[reply]
[d/l]
Re^3: Update: problem with scalar
by Laurent_R (Canon) on Apr 24, 2016 at 07:44 UTC
    Your @array variable is probably not properly populated and is likely to be empty (at least in part). This suggest that you might have an earlier problem reading the testFile.txt file.

    Perhaps you could change the file opening line as follows: 

    open FILE, "<", 'testFile.txt' or die "Cannot open testFile.txt $!";

    [download]
    This will not solve the problem but at least it would tell you if the program failed to open the file.

    BTW, you should always check whether such OS related statements succeed.

[reply]
[d/l]
[select]

In Section 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: note [id://1161349]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? • Last hour • Other CB clients
Other Users?
Others browsing the Monastery: (7)
As of 2024-04-25 11:24 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found