Doesn’t gen-class mean that you can’t easily do REPL driven development? And fwiw, I know that e.g deftype supports adding annotations for classes that are defined dynamically, so ideally I’d have a proxy that allows the same. Thanks either way!

Yeah, I don't know if proxy can support this

{:local/root "path/to/dir/containing/other-deps.edn"}

Thank you @U01GXCWSRMW!

(sequence
  (map (fn [x y] (+ x y)))
  (range 1 10)
  (range 10 20))

Oh, that indeed seems to be the case, thank you!

Very interesting. It appears this is achieved via clojure.lang.TransformerIterator/createMulti, which doesn't appear to be used anywhere else in core, which makes me think this is the only way this arity will be invoked via core fns

That's the only place you can get to it right now

It may be leveraged elsewhere in the future

Generally, the transducer arities would start to fight with the non transducer arities for stuff like this

Thank you for the confirmation! Looking forward to that may part 😉