I think I've settled on requiring that the iterator be called in a list context. Eg.:

sub i{ 
    my $n = shift; 
    return sub{ $n ? $n-- : () } 
};;

$i = i( 5 ); 
print $_ while ( $_ ) = $i->();;
5
4
3
2
1

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Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^3: Dumb, non-question: How to return 'nothing'. by BrowserUk
in thread Dumb, non-question: How to return 'nothing'. by BrowserUk

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