The code below is designed to read a file into a hash, and then parse through a nother file. if the entry is found, the entry should be put in $BEEPON, if the entry is not found it should be put it $BEEPOFF.

the problem I am having is this error:

readline() on closed filehandle $LISTDEL at ./delete_list_ver3.pl line
+ 12 (#1)
    (W closed) The filehandle you're reading from got itself closed so
+metime
    before now.  Check your control flow.
[download]

Any thoughts? as far as I can tell the file is open... What is going on?

Thanks in advance.

#!/usr/bin/perl 
use strict; 
use warnings; 
use diagnostics; 

if (@ARGV = 2){ 
    my %delList;  
    open my $BEEPON, '>>', "./beepon.file"; 
    open my $BEEPOFF, '>>', "./beepoff.file"; 
    open my $LISTDEL, '<', $ARGV[0]; 
    
    foreach (<$LISTDEL>){ 
        chomp($_);
        $delList{$_} = 1; 
    } 
     
    open (my $ORGLIST, '<', $ARGV[1]); 
    
    foreach my $entry (<$ORGLIST>){ 
        chomp($entry);
        print { exists $delList{$entry} ? $BEEPON : $BEEPOFF } $entry 
+. "\n";
    }

close $LISTDEL;
close $BEEPON; 
close $BEEPOFF; 
}
[download]