You could do something like this:

(def v {:a--id 1 :a--name "A" :b--id 2 :b--name "B"})

(group-by #(-> % first str second str keyword) v)

=>{:b [[:b--name "B"] [:b--id 2]], :a [[:a--id 1] [:a--name "A"]]}

(reduce-kv #(assoc % %2 (into {} %3)) {} *1)

=> {:a {:a--id 1, :a--name "A"}, :b {:b--name "B", :b--id 2}}

all that's left is the names in the inner map...

HTH,

Jim


On 16/01/14 13:46, James Conroy-Finn wrote:
Hello all,

I've found myself stuck trying to move matching keys in a hash into a nested hash.

For example,:

{:a--id 1 :a--name "A" :b--id 2 :b--name "B"} ;=> {:a {:id 1 :name "A"} :b {:id 2 :name "B"}}

I've tried `clojure.walk`, I've tried building the args to `assoc-in`, and using `apply`. I honestly feel like I'm missing something really obvious, like something with group-by.

Any tips would be greatly appreciated. I'll keep hammering away.
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