On Fri, Mar 18, 2011 at 9:04 PM, Nick <npatric...@gmail.com> wrote:
> I'm looking to do some operations upon the data in an associative
> structure. What do you think about this method of hijacking the
> definition of assoc-in? Is there some better way to do what I'm doing
> here?
>
> user> (defn op-in [op m [k & ks] v]
> (if ks
> (assoc m k (op-in op (get m k) ks v))
> (assoc m k (op (get m k) v))))
> #'user/op-in
>
> user> (def union-in (partial op-in clojure.set/union))
> #'user/union-in
> user> (union-in {:a [#{1 2}]} [:a 0] #{1 7 8})
> {:a [#{1 2 7 8}]}
>
> user> (def conj-in (partial op-in conj))
> #'user/conj-in
> user> (conj-in {:a [#{1 2}]} [:a 0] 7)
> {:a [#{1 2 7}]}
Something wrong with using update-in here?
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