I'm trying to create a Typed Racket function that compares to 2-vectors of
integers with an optional error term that defaults to 1:
(define-type Reading (Vector Integer Integer))
(: close? (->* (Reading Reading) (Integer) Boolean))
(define/match (close? r1 r2 [err 1])
[((vector a b) (vector c d) e)
(and (= a (+ c e)) (= b (+ d e)))])
In untyped Racket the function compiles and runs as I expected. In Typed
Racket the pattern-matched values all seem to have type "Any".
I think there's some interaction between Typed Racket's typing rules and
the define/match macro that I haven't understood properly? As a complete
Racket newb I may also be going about this the wrong way. Any advice much
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