Re: [Lib2geom-devel] Curve/Path2 in Haskell

[mgsloan <mg...@gm...>]

Have you already started the haskell version then? :)

Anyway, that's a pretty cool hack to allow external Curve implementations,
but do we really need it?  I'd think a 'data Curve = ' etc would be enough.
This is true of the C++ version as well - I'm for compile time
polymorphism.  If users want to add a curve type, they can contribute to the
lib.

On 3/15/07, MenTaLguY <me...@ry...> wrote:
>
> On Thu, 2007-03-15 at 12:01 -0700, MenTaLguY wrote:
> > In C++, I don't know whether it would work best for e.g. D2<SBasis> to
> > derive from Curve, or whether we keep SBasisCurve, which derives from
> > Curve and D2<SBasis> both.
>
> Alternately, we could do what the Haskell version does -- offer a choice
> between compile-time polymorphism (direct uses of SBasis, Bezier, etc)
> and run-time polymorphism (wrapped in Curve).
>
> That lets us choose either approach as appropriate, without forcing a
> performance tradeoff.
>
> -mental
>
> -------------------------------------------------------------------------
> Take Surveys. Earn Cash. Influence the Future of IT
> Join SourceForge.net's Techsay panel and you'll get the chance to share
> your
> opinions on IT & business topics through brief surveys-and earn cash
> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
> _______________________________________________
> Lib2geom-devel mailing list
> Lib...@li...
> https://lists.sourceforge.net/lists/listinfo/lib2geom-devel
>
>
>