Beefy Boxes and Bandwidth Generously Provided by pair Networks
more useful options

Re^3: How to swap rows with columns? - Still unresolved :(

by blazar (Canon)
on Oct 12, 2007 at 12:25 UTC ( #644455=note: print w/replies, xml ) Need Help??

in reply to Re^2: How to swap rows with columns? - Still unresolved :(
in thread How to swap rows with columns? - Still unresolved :(

The script works fine if I use "./<script_name> data_file". But when I hardcode the name of data_file, it doesn't work. I am sure it has something to do with "while (<>)" statement. Can anyone please advice how to proceed when we have datafile name hardcoded, and it is read in an array and then.......???

I personally believe that you should get familiar with some basic Perl: then you wouldn't be asking such an embarassingly trivial question. Anyway, here's your fish - you either want

  • an explicit open as in:
    open my $fh, '<', $data_file or die "Can't open `$data_file': $!\n";
    and then you would use while (<$fh>) instead of while (<>), or
  • just populate @ARGV manually:

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://644455]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others studying the Monastery: (3)
As of 2020-02-29 01:56 GMT
Find Nodes?
    Voting Booth?
    What numbers are you going to focus on primarily in 2020?

    Results (128 votes). Check out past polls.