Very simple function:
(defn map-filter [f coll]
(map f (filter f (coll)))
Is there an API function for this that I am missing? For example, it
is useful for pulling out all values in a list of maps of a certain
key that is optional:
Clojure=> (map-filter :k [{:a :b :c :d :k :found} {:a :b :c :d}
{:a :b :c :d :k :other}])
(:found :other)
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