At this point it is mostly a question of how restrictive your teacher
wishes to be by requiring that you implement this as a single function. If
you are using full Racket, it is possible to define a helper function
inside of a larger function. Here is the most direct way to translate your
existing code:
#lang racket
(define *lex*
'((cat gato katze)
(dog perro hund)
(eats come frisst)
(jumps salte springt)
(the el die)))
(define (translate-sentence satz lexikon sprache)
(define (translate-word wort lexikon sprache)
(cond
[(null? lexikon)
'(Wort wurde nicht gefunden)]
[(or (equal? wort (first (first lexikon)))
(equal? wort (first (rest (first lexikon))))
(equal? wort (first (rest (rest (first lexikon))))))
(cond
[(equal? sprache 'english)
(first (first lexikon))]
[(equal? sprache 'spanisch)
(first (rest (first lexikon)))]
[(equal? sprache 'deutsch)
(first (rest (rest (first lexikon))))])]
[else
(translate-word wort (rest lexikon) sprache)]))
(cond
[(null? satz) '()]
[else
(cons (translate-word (first satz) lexikon sprache)
(translate-sentence (rest satz) lexikon sprache))]))
Can you see a way to make remove the sprache argument from translate-word?
-Philip
On Sun, Jun 25, 2017 at 3:03 PM, <philipp.thiess1...@gmail.com> wrote:
> Thanks guys I got a solution!
>
> #lang racket
>
>
>
> (define *lex*
> '((cat gato katze)
> (dog perro hund)
> (eats come frisst)
> (jumps salte springt)
> (the el die)))
>
>
> (define (translator wort lexikon sprache)
>
> (cond ((null? lexikon) '(Wort wurde nicht gefunden))
>
> ((or (equal? wort (first (first lexikon)))
>
> (equal? wort (first (rest (first lexikon))))
>
> (equal? wort (first (rest (rest (first lexikon))))))
>
>
> (cond
> ((equal? sprache 'english) (first (first lexikon)))
>
> ((equal? sprache 'spanisch) (first (rest (first lexikon))))
>
> ((equal? sprache 'deutsch) (first (rest (rest (first lexikon))))))
>
> )
>
>
> (else (translator wort (rest lexikon) sprache))
>
> ))
>
> (define (translate2 satz lexikon sprache)
> (cond((null? satz) '())
> (else (cons (translator (first satz) *lex* sprache) (translate2
> (rest satz) lexikon sprache)))))
>
>
> So now I just wanna know if there is a way to make this in one function?
> Is it possible to make a function inside a function and if yes how?
>
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