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higher-rank
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README.md
info.rkt

README.md

higher-rank

A Racket implementation of Complete and Easy Bidirectional Typechecking for Higher-Rank Polymorphism using the techniques outlined in Type Systems as Macros. This is a sister project to the simpler Haskell implementation from which it is adapted.

This project should be installed as a Racket package, and it defines #lang higher-rank. You can run a REPL from within DrRacket, or you can use the command line:

$ cd racket-higher-rank
$ raco pkg install
$ racket -iI higher-rank
Welcome to Racket v6.8.0.3.
> unit
: Unit
#<unit>
> (lambda x x)
: (-> g1^ g1^)
#<procedure:...er-rank/main.rkt:70:18>
> ((: (lambda id ((id (lambda x x)) (id unit)))
      (-> (forall a (-> a a)) Unit))
   (lambda x x))
: Unit
#<unit>