Clojure does allow type annotations that are used to avoid reflection. https://clojure.org/reference/java_interop#Java%20Interop-Type%20Hints https://clojure.or

Clojure does allow type annotations that are used to avoid reflection. https://clojure.org/reference/java_interop#Java%20Interop-Type%20Hints https://clojure.org/reference/java_interop#Java%20Interop-Ty... (defn len2 [^String x] (.length x))