I am a senior student and plan to build a continuous integration system
using Racket as my graduation project.
I'm very new to Racket web programming and CI/CD (about CI system I've
already found some great projects to refer to).
I've just gone through [Web Applications in Racket] and
I came to the following result as conversion function :
(: string2value (-> String Integer))
(define (string2value astring)
(define (fun [val : Char] [res : Integer])
(+ (* 10 res) (- (char->integer val) 48)))
(foldl fun 0 (string->list astring))
I'm trying to get racket to talk to a virtual serial port on windows 10,
and I've previously used code based on this email thread
It used to work and now for some reason it fails with an error 87 when I
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