[Haskell-cafe] Designing an object model in Haskell

Jeff Polakow jeff.polakow at db.com
Thu Dec 7 09:22:18 EST 2006


Have you looked at OOHaskell (http://homepages.cwi.nl/~ralf/OOHaskell/)?

-Jeff

haskell-cafe-bounces at haskell.org wrote on 12/07/2006 07:07:46 AM:

> Hi,
> 
> I've got an object model that I have a difficult time 
> conceptualising how it might look like in Haskell:
> 
> class Element { }
> 
> class Inline : Element { }
> 
> class ParentInline : Inline {
>    List<Inline> children; 
> }
> 
> class Bold : ParentInline { }
> class Underline : ParentInline { }
> 
> class Link : ParentInline {
>    String link;
> }
> 
> class Text : Inline {
>    String text;
> }
> 
> class Block : Element { } 
> 
> class Paragraph : Block {
>    List<Inline> paragraph;
> }
> 
> class Heading : Block {
>    List<Inline> heading;
> }
> 
> class Document : Element {
>    List<Block> blocks;
> }
> 
> How best to represent this OO data model in Haskell?
> 
> Thanks
> 
> -John
> _______________________________________________
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> Haskell-Cafe at haskell.org
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