dropWhileR for efficient deconstruction of
Seqs from the right. However,
splitAtR are conspicuously absent.
drop are implemented in terms of
splitAt. So, do finger trees not admit an efficient
splitAtR or was this functionality not included for some other reason?
(Separate but somewhat related question: Would a naive
dropR implementation in terms of
viewR perform decently well?)
This question is based on