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passing file handles

passing file handles

passing file handles

How oh how does one pass a file handle to a sub? The reason I want to do this is because I have a sub to print out data to a file, and I want it to print out to where the handle is currently at. So I don't want to pass the filename...I want to pass the handle....how does one do it???


RE: passing file handles

I assume you have something like this to open the output

open(OUTF,">$output_File") or die "$!";

What I would do is store OUTF in a variable

$outf_handle = "OUTF";

and then when you call the sub place it in there like a C function call

Foo($outf_handle) ;

and then in the subroutine do this first:
sub Foo {
my($outf_name) = @_;

This will keep the variable private and inside the subroutine's scope depth.  As long as you keep  C function call ideas this will do

Foo($VAR1, $VAR2 ....);

sub Foo {
my($var1, $var2 ....)  = @_;

There is a slick way of doing it so you can do it in any order but I can't remember it.

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