On Friday, 2003-07-25, 21:48, Dylan Thurston wrote:
> [...]

> Another approach is to make Universe a multi-parameter type class:
>
> class (RealFrac a, Floating a) => Universe u a | u -> a where
>   distanceVector :: u -> Vector a -> Vector a -> Vector a
> ...
>
> You need to use ghc with '-fglasgow-exts' for this.

Or hugs with '-98'.

> Peace,
>       Dylan

Wolfgang

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