If I put some driver code in front of your sample and remove the cat calls (which are sub optimum on Windows) I get the following: 

use strict;
use warnings;

my @inserts = (
    [1, 1, 1],
    [2, 2, 2]
    );

my $outfile = 'delme.txt';
my $ins = 0;

open OUTFILE, '>', $outfile;
print OUTFILE <<DATA;
first second third
1 2 3
x y z
DATA
close OUTFILE;

insert (@$_) for @inserts;

@ARGV = $outfile;
$/ = undef;
print <>;

# OP's sub sans cat calls follows

[download]

Prints:

insert called:0
insert called:1
first    second    third    1    2    
1    2    3    1    2    
x    y    z    1    2

[download]

Where's the problem?

DWIM is Perl's answer to Gödel

In reply to Re: weird file write problem by GrandFather
in thread weird file write problem by monkeyking

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