Re: [Haskell-cafe] Re: [Haskell-beginners] Re: Accounting Engine in Haskell

Thanks, I'll try to look it up. I have a question about the representation. In the paper, the authors define a Region as: type Region = Point -> Bool type Point = (Float,Float) I understand the idea that representing Regions as functions is quite interesting when it comes to combining and manipulating them. But what if one wants to calculate the area of a Region or render it in some fashion? Thanks, Patrick On Thu, Jun 17, 2010 at 11:24 AM, Stephen Tetley wrote:

On 17 June 2010 16:12, Patrick LeBoutillier wrote:

...

This paper was very interesting to me. Does anyone know if the full source code for the Haskell prototype is available somewhere?

Chapter 8 of Paul Hudak's School of Expression contains a version of the "region algebra", there's also an ML version by Samuel Kamin where the region combinators generate C++ code:

Samuel Kamin - Standard ML as a Meta-Programming Language:

http://loome.cs.uiuc.edu/pubs.html http://loome.cs.uiuc.edu/pubs/ml-meta.pdf _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

-- ===================== Patrick LeBoutillier Rosemère, Québec, Canada