Clojurians Log v2

I am still a specter noob myself, but I am putting how I would do this so maybe others can point out better ways to do this

(sp/setval [sp/ALL (fn [[k _]] (#{:a :b} k))] sp/NONE {:a 1 :b 2 :c 3})
=> {:c 3}

Thanks. I feed doubly silly because what was holding me back from the right answer was passing the params to clojure.set/difference in the wrong order 😕 In the end, this line worked!

(transform [ATOM :arcs MAP-KEYS diff] NONE hackstate) 

There's a few ways, one is MAP-KEYS #{:k1 :k2} as path for setval NONE