For the wantarray, i see the usefulness, but i was commenting on moving the return outside of the ?:. It's not really a big deal, but it would look something like:

return wantarray ? ($_,'blah') : $_;
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For the end hook, you have a start index, you can receive an extra scalar as the end index, and only pick it up if they've put in a start index as well. Prototype would be kinda like:

findone { code } @list
findone { code } @list, $start_index
findone { code } @list, $start_index, $end_index

So if they know they don't need to walk further than a certain place on the array they can be certain to stop there.

jynx