Infinity prefer: 

while( my $r = $iter->next ) {
    my ( $z, $y, $x, $w ) = @{ $r };
    next unless $w-2*$x+$y or $x-2*$y+$z;
    print "$w, $x, $y, $z\n";
}

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In reply to Re: Unconventional exit from while loop by BrowserUk
in thread Unconventional exit from while loop by hdb

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