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      Intriguing: Function-level Array Programming vs Function-level Stack Programming.

      APL, J, et al are examples of the former. Forth and Joy were pioneers of the latter, but Factor is the state of the art (see factorcode.org).

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        His joy0 in joy0 is still my favourite example program of all time.

        And his rewrite stuff is pure inspiration… a guiding light of where computing could yet go to.