Another alternative is to use an iterator 

sub getIter{ 
    my ($start,$end, $aryRef) = @_; 
    $end=$#$aryRef if $end==-1; 
    return sub { 
        return $aryRef->[$start++] if $start <= $end; 
        (); 
    }
}
my @a = 1 .. 1000000;

my $iter = getIter 500000, 500005, \@a;
while ( $iter->() ) {
    print $_, $/;
}

[download]

gives 500001 500002 500003 500004 500005 500006 </code>

No long lists created, just discard the iterator when your done with it, have as many active simutaneously as you need and it's a fairly trivial modification to make it move in steps or backwards etc.

Examine what is said, not who speaks.

The 7th Rule of perl club is -- pearl clubs are easily damaged. Use a diamond club instead.

In reply to Re: Starting foreach at an arbitrary position by BrowserUk
in thread Starting foreach at an arbitrary position by Anonymous Monk

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