[Haskell-beginners] another list comprehesion error

[David Place]

On Jul 21, 2011, at 1:27 PM, Roelof Wobben wrote:

> roelof :: a -> b -> c -> (a,b,c)
> roelof n = [(x y z) | x^2+Y^2=Z^2 <- x<-[1..n], y<- [1..n], z<-[1..n]]
> 
> But I get this error : oefening.hs:2:30: parse error on input `='

Hi, Roelof.

This short amount of code has many syntax and semantic errors.    May I suggest that you might benefit from trying to make this function using only normal function application and the basic list functions.    I think you will learn more about Haskell this way.  Personally, i rarely use list comprehensions.  I think they are not very modular.

Also, it might help people to understand your background a little.  This way comments could be better focused.  For instance, which other programming languages do you know?

____________________
David Place   
Owner, Panpipes Ho! LLC
http://panpipesho.com
d at vidplace.com


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