RE: [racket-users] Re: recursive definition of a PROPOSITION

[Jos Koot]

Do you mean the following?

(define (a)
  (case (random 6)
[(0) (string-append "P" "→" (a))]
[(1) (string-append "R" "↔" (a))]
[(2) (string-append "T" "∧" (a))]
[(3) (string-append "Z" "⊕" (a))]
[(4) (string-append "S" "q" (a))]
[(5) "" ]))

Jos 

-Original Message-
From: racket-users@googlegroups.com [mailto:racket-users@googlegroups.com] On 
Behalf Of Aysenur Türk
Sent: viernes, 19 de febrero de 2016 13:24
To: Racket Users
Subject: [racket-users] Re: recursive definition of a PROPOSITION

(define (a)
  (case (random 6)
[(0) (string-append "P" (a)"→"  )]
[(1) (string-append "R" (a) "↔")]
[(2) (string-append "T" (a)"∧" ) ]
[(3) (string-append "Z" (a)"⊕")]
[(4) (string-append "S" (a) "q")]
[(5) "" ]))



(a)


"RPRZTZPRZPZT∧⊕→⊕↔→⊕∧⊕↔→↔"
"TPTZ⊕∧→∧"

I tried it and found that but it's not work that i want.the propositions and 
variables order wrong i want it like that "P↔Q→ R ∧ S ⊕ T¬Y ∨ Z ".How can fix 
it?

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Re: [racket-users] Re: recursive definition of a PROPOSITION

[Matthias Felleisen]

You are not designing your code. You’re guessing. Is that what you want? 


> On Feb 19, 2016, at 7:23 AM, Aysenur Türk  wrote:
> 
> (define (a)
>  (case (random 6)
>[(0) (string-append "P" (a)"→"  )]
>[(1) (string-append "R" (a) "↔")]
>[(2) (string-append "T" (a)"∧" ) ]
>[(3) (string-append "Z" (a)"⊕")]
>[(4) (string-append "S" (a) "q")]
>[(5) "" ]))
> 
> 
> 
> (a)
> 
> 
> "RPRZTZPRZPZT∧⊕→⊕↔→⊕∧⊕↔→↔"
> "TPTZ⊕∧→∧"
> 
> I tried it and found that but it's not work that i want.the propositions and 
> variables order wrong i want it like that "P↔Q→ R ∧ S ⊕ T¬Y ∨ Z ".How can fix 
> it?
> 
> -- 
> You received this message because you are subscribed to the Google Groups 
> "Racket Users" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to racket-users+unsubscr...@googlegroups.com.
> For more options, visit https://groups.google.com/d/optout.

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