Re: [racket-users] Why doesn't this maxval function correctly return the maximum value in the list

Here's a version of your code that runs in the Intermediate Student language ("local" isn't part of Beginning Student): (define (maxval lst) (local ((define (aux lst max) (cond [(null? lst) max] [(> (car lst) max) (aux (cdr lst) (car lst))]

Re: [racket-users] Why doesn't this maxval function correctly return the maximum value in the list

You may wish to read up on the design recipe and the necessity of ‘local’ definitions in HtDP2e: http://www.ccs.neu.edu/home/matthias/HtDP2e/ > On Feb 13, 2017, at 3:46 PM, Angus Comber wrote: > > But it has to have the signature maxval lst - it is a homework

Re: [racket-users] Why doesn't this maxval function correctly return the maximum value in the list

But it has to have the signature maxval lst - it is a homework problem. So I thought I would need max in the helper function. Basically to keep an internal max saved value. Is there another way? On 13 February 2017 at 20:38, Matthias Felleisen wrote: > > Just lift aux

Re: [racket-users] Why doesn't this maxval function correctly return the maximum value in the list

Just lift aux out. > On Feb 13, 2017, at 3:18 PM, Angus Comber wrote: > > If I change the code to: > > (define (maxval lst) >(define (aux lst max) > (cond [(null? lst) max] >[(> (car lst) max) (aux (cdr lst) (car lst))] >[#t (aux

Re: [racket-users] Why doesn't this maxval function correctly return the maximum value in the list

If I change the code to: (define (maxval lst) (define (aux lst max) (cond [(null? lst) max] [(> (car lst) max) (aux (cdr lst) (car lst))] [#t (aux (cdr lst) max)])) (aux lst 0)) and comment out #lang racket at the top of the file and select Beginning Student as

Re: [racket-users] Why doesn't this maxval function correctly return the maximum value in the list

> On Feb 12, 2017, at 3:00 PM, Angus wrote: > > I am a beginner Racket developer by the way. > > Here is my maxval function which is supposed to take a list and return the > largest integer in the list. > > (define (maxval lst) > (define (aux lst max) > (cond

Re: [racket-users] Why doesn't this maxval function correctly return the maximum value in the list

On Sun, Feb 12, 2017 at 3:00 PM, Angus wrote: > I am a beginner Racket developer by the way. > > Here is my maxval function which is supposed to take a list and return the > largest integer in the list. > > (define (maxval lst) >(define (aux lst max) > (cond

[racket-users] Why doesn't this maxval function correctly return the maximum value in the list

I am a beginner Racket developer by the way. Here is my maxval function which is supposed to take a list and return the largest integer in the list. (define (maxval lst) (define (aux lst max) (cond [(null? lst) max] [(car lst) > max (aux (cdr lst) (car lst))] [#t