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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