How to do stuff in specter

specter.clj

(def MAP-VALS (sp/comp-paths sp/ALL sp/LAST))

; increment the values for a list of keys
(sp/transform [(apply sp/multi-path [:foo])] inc {:foo 1 :bar 2}) => {:foo 2 :bar 2}
;; or
(sp/transform [(sp/submap [:foo]) MAP-VALS] inc {:foo 1 :bar 2})

;; play with submaps
(sp/select [(submap [:foo :baz])] {:foo 1 :bar 2})
=> [{:foo 1}]
(sp/setval [(submap [:bar])] {:barry 1} {:foo 1 :bar 2})
=> {:foo 1, :barry 1}