Are you trying to pass a filehandle to a subroutine? If so, there are a variety of methods you can use.

The first is, you can just not pass it. Filehandles are global. So you can just use it, like this: 

sub foo {
   open FILE, "file.txt";
   bar();
   close FILE;
}
sub bar {
   my @lines = <FILE>;
   # do something here
}

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Second, you can open the filehandle as a variable and pass that. This is probably the best method. 
sub foo {
   open my $file, "file.txt";
   bar($file);
   close $file;
}
sub bar {
   my ($file) = @_;
   my @lines = <$file>;
   # do something here
}

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Lastly, I think you can use a typeglob. But I'm not sure how, and it'll be ugly. My advice would be to forget that I even mentioned it and use one of the other methods. But it's there if you need it.

elusion : http://matt.diephouse.com

In reply to Re: passing filename in subroutines by elusion
in thread passing filename in subroutines by snam

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