[Haskell-cafe] ANN: fixed-vector

[Carter Schonwald]

Michael, I think that calls for a type-class!
(though I imagine theres a slicker way of writing it)


On Sun, Nov 11, 2012 at 11:18 PM, Michael Orlitzky <michael at orlitzky.com>wrote:

> On 11/10/2012 06:59 AM, Aleksey Khudyakov wrote:
> > Hello cafe!
> >
> > I want to announce library for the small vectors of fixed length
> > fixed-vector[1]. Fixed means that vector's length is determined
> > by its type.
> >
> > Generic API can work with both ATD-based vector like complex or
> > Vec written below and array-based ones.
> >
> >> data Vec a = Vec a a a
> >
> > It's based on post by Roman Leschinsiy[2].
> >
> >
> > Library also provide array-based vectors with memory
> > representation similar to onves from vector package. It's more
> > compact though because there is no need to store lengh and and
> > offset to first element.
> >
> > [1] http://hackage.haskell.org/package/fixed-vector
> > [2]
> http://unlines.wordpress.com/2010/11/15/generics-for-small-fixed-size-vectors/
>
>
> I have a lot of one-off code where I've defined these myself. Is it
> possible to e.g. define vectors in R^2 and R^3, and write the p-norm
> functions only once?
>
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