[racket-users] PLT Redex: how to falsify the judgment in define-judgment-form

2021-01-03 Thread Xu Xue
Hi, Racketeers

Since Redex can calculate all possible results in the judgment, Can I add 
some negative premise to help derive the output? like

(define-judgment-form Lambda
#:mode (infer I O)
[(infer A B)
*(not (infer number B)*
-
(Infer C B)]

I tried to replace bold line with (side-condition (not (judgment-holds 
(infer number B, which is disallowed in Redex since B is in the output 
position.

So any standard way to express this intention?

more concrete example is in 
https://github.com/juniorxxue/applicative-intersection-semantics/blob/main/definition.rkt#L94

Regards
Xu

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[racket-users] plan to build a continuous integration system in racket

2020-02-12 Thread Xu Xue
Hi, all

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 bought [Server: 
Racket].

Are there any other starter resources or experiences to share about the 
Racket web programming?

Or maybe isn't it a good choice to dive into the web field using Racket?




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