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Scala has delimited continuations since some time now, so it can seemingly be done in a way that's performant enough.

Oh for sure, it's a bit wonky on the JVM due to the lack of tail calls, but that sort of thing can be done via full-stack bytecode transformation.

But these people are doing this in Clojure, which is quite removed from the JVM bytecode, and talking about how it solves so many distributed problems, which I just don't see happening.

If you look at redplanetlabs github repo, there's a ton of low level manipulation of 'JVM bytecode assembly language', e.g. https://github.com/redplanetlabs/defexception/blob/master/sr..., for projects that aren't even compilers, one would assume their "compiler" does this even more so.

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