Esteemed Monks,

Consider the following code, input file, and output:

#!/usr/local/bin/perl

use strict;
use Text::CSV_XS;
use FileHandle;

my $infile = "foo.csv";
my $IN = new FileHandle;
open ( $IN, "<$infile") or die "can't read $infile: $!";

my $c = 0;
my $csv = Text::CSV_XS->new( {'binary'      => 1});

while (  my $cols_aref = $csv->getline( $IN )  ) {
   my @a = @{$cols_aref};

   print "$a[0],$a[1],$a[2]\n";

   $c++;     # Alternative way to assure exiting loop
   exit if ( $c > 5  );
}
exit;

## My foo.csv
Fred,foo,3
Tom,bar,4

## Output:
Fred,foo,3
Tom,bar,4
,,
,,
,,
,,
[download]

I don't understand what's happening in the while condition that prevents it from ending when it reaches EOF. Can anyone educate me?

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