[Haskell-beginners] another list comprehesion error

[Roelof Wobben]

Oke, 

So I can better goto the next chapter or look for a better book.

Im using now Programming in Haskell.

 

My background is that many years I have tried to programm in Delphi.
The last years I have tried C and C++ but these were to difficult for me with header files.

I could make this with a for next loop and a if then  if you like it that way ?

 

Roelof
________________________________
> Subject: Re: [Haskell-beginners] another list comprehesion error 
> From: d at vidplace.com 
> Date: Thu, 21 Jul 2011 14:05:14 -0400 
> CC: beginners at haskell.org 
> To: rwobben at hotmail.com 
> 
> 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<mailto:d at vidplace.com> 
> 
>