Nice! On Aug 7, 11:56 pm, Michał Marczyk <michal.marc...@gmail.com> wrote: > Yet another version: > > (defn take-while-acc [f pred coll] > (map (fn [_ x] x) > (take-while pred (reductions f coll)) > coll)) > > Seems to work: > > user> (take-while-acc + #(< % 100) (range)) > (0 1 2 3 4 5 6 7 8 9 10 11 12 13) > > Note that reductions does use an "accumulator" (in the form of a > closed over local), so the above works as requested. Also, this > version constructs no auxiliary data structures, not even two-element > vectors. > > Sincerely, > Michał
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