Seeing as a scalar is always being returned, 

while( my $next = $iter->() ) {
    ($next) = @$next;
    ...
}

[download]

can be shortened to 

while( my ($next) = @{ $iter->() } ) {
    ...
}

[download]

In reply to Re^4: Dumb, non-question: How to return 'nothing'. by ikegami
in thread Dumb, non-question: How to return 'nothing'. by BrowserUk

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