Exercise - grouping characters

[practicalli-johnny]

Given a string "aaabcdddefffff" split apart into continuous groups, i.e., ["aaa" "b" "c" "ddd" "e" "fffff"]?

(partition-by identity "aaabcdddefffff")

(->> (partition-by identity "aaabcdddefffff")
(mapv (partial apply str)))

if seeing partial apply str makes you shudder
(->> (partition-by identity "aaabcdddefffff")
(mapv clojure.string/join))

clojure.string/join has a 1-arity that joins with an empty string, so negates the need to use apply str