[Haskell-cafe] Haskell board game

2008-09-24 Thread Rafael C. de Almeida
Hello, I'm interested in doing a simple board game on haskell. For that I want to be able to draw stuff like the possible player movements and I want to be able to display very simple animations. I want to know what graphical interface library you suggest to me. I have almost no prior experience

Re: [Haskell-cafe] Float instance of 'read'

2008-09-16 Thread Rafael C. de Almeida
Mauricio wrote: Hi, A small annoyance some users outside english speaking countries usually experiment when learning programming languages is that real numbers use a '.' instead of ','. Of course, that is not such a problem except for the inconsistence between computer and free hand

Re: [Haskell-cafe] Haskell Weekly News: Issue 85 - September 13, 2008

2008-09-15 Thread Rafael C. de Almeida
Richard A. O'Keefe wrote: On 14 Sep 2008, at 10:59 pm, Rafael Almeida wrote: One thing have always bugged me: how do you prove that you have correctly proven something? This really misses the point of trying to formally verify something. That point is that you almost certainly have NOT.

Re: [Haskell-cafe] Should `(flip (^^))` work?

2008-09-15 Thread Rafael C. de Almeida
Derek Elkins wrote: On Mon, 2008-09-15 at 18:42 -0300, Mauricio wrote: Hi, I tested the expression below and it doesn't work. Is there some way to achieve that (i.e., turning an expression inside parenthesis into an operator)? 2 `(flip (^^))` (3%4) No it shouldn't work. The fact that

[Haskell-cafe] Web processing

2008-08-02 Thread Rafael C. de Almeida
Hello, I understand that nowadays there are several frameworks and wrapper libraries for making some sense of the XHTML documents you find over the web. That is, making the life of those who want to process the semi-structured data you find on the sites. I don't have much experience on that

[Haskell-cafe] Monad proof

2008-04-11 Thread Rafael C. de Almeida
Hello, I was studying Monads and I was trying to think about new Monads I could define. So, a question poped into my mind: how is proof regarding the 3 Monad laws handled? I know that, aside from testing all the possible values (and there can be a lot of them), there's no general way to