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This seems like a lot of work for a result that isn't even very self documenting compared to some earlier efforts e.g.

Guido's post on multimethods: https://www.artima.com/weblogs/viewpost.jsp?thread=101605

Clojure style multimethods: https://adambard.com/blog/implementing-multimethods-in-pytho...

I remember reading the multimethods post and thinking it was wrong as it does not dispatch on all arguments, as dylan would (and I believe closure would too) - correct me if I'm wrong though.

It does dispatch on the types of all arguments, ... that's the point of it.

Some sample code (I modified it to be commutative on the argument types):

https://gist.github.com/arunbear/caef7546d297c01fddbd3f67117...

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