Ah, update-in is exactly what I need. Excellent, thank you. On Nov 22, 2:38 pm, John Harrop <jharrop...@gmail.com> wrote: > On Sun, Nov 22, 2009 at 4:32 PM, samppi <rbysam...@gmail.com> wrote: > > Does a function that does this: > > (vary coll :x fn-x, :y fn-y) > > ; Equivalent to (assoc coll :x (fn-x (:x coll)), :y (fn-y (:y > > coll))) > > exist in the core or contrib APIs? > > > I'm surprised that I can't find any. It's a very natural extension of > > assoc. > > There's update-in, which is like what you want but for assoc-in, but oddly > no plain update analogously to plain assoc. I'd use update-in.
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