why clojure.walk postwalk-replace accepts a map instead of a function

Question

May I know the rationale behind postwalk-replace/prewalk-replace to accept a map for replacing forms instead of functions? Functions provide ability to have some logic which is not possible via smap

Answer 1

Seems to me like "postwalk-replace that accepts a function instead of a map" is just postwalk. Because all that postwalk-replace does is to call postwalk with (fn [x] (if (contains? smap x) (smap x) x)).
Or am I missing something?

Comments

You are correct.

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never realized that :facepalm: