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2026-01-13T14:16:45.331119Z
Invoking an anonymous primitive function seems to not use the primitive interface.
(set! *unchecked-math* :warn-on-boxed)
(let [f (fn ^double [] 1.0)]
(+ 1.0 (f)))
;; Boxed math warning👀 1
Alex Miller (Clojure team) 2026-01-13T14:21:37.818549Z
Don't know, put it on ask please
👍 1
bronsa 2026-01-13T14:24:11.199809Z
it's at least very intentional in the compiler, invokePrim optimisations are only emitted for var callsites
2026-01-13T14:29:10.059299Z
https://ask.clojure.org/index.php/14888/invoking-anonymous-primitive-function-primitive-interface
2026-01-13T14:30:49.036279Z
The limitation to 4 arguments on primitive functions means it’s not always possible to use a defn instead.