Hi monks,

This shouldn't be too hard to answer. How do I safely pass a filehandle into a subroutine? Let's say I've got code like this: 
use strict;
use warnings;

my($infile, $outfile) = @ARGV;

open(IN, "$infile");
open(OUT, ">$outfile");

{ blah }

print_some_stuff();

sub print_some_stuff {
    
    print OUT <<"EOF";
This is a test, it is only a test. 
In the event of an emergency, run around in a panic.
EOF

}

[download]
Leaving the other details out, if I wanted to print out to different files, I have re-open OUT to different files. If I could pass my filehandle to print_some_stuff, I could print to a number of files at the same time.

Thanks!

ibanix

$ echo '$0 & $0 &' > foo; chmod a+x foo; foo;

In reply to Passing filehandles to subroutines by ibanix

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.