[Haskell-cafe] Re: hmatrix

[Anatoly Yakovenko]

>> do you have any plans to provide an interface for inplace updates?
>
> Yes, I will try to write a simple version of Data.Array.ST...
>

I can try to help you, although I still dont quite grok monads.
Wouldn't it be more efficient to use StorableArray, so you can cast
from and to C?  I am not sure how vectors and matrixes are represented
in C, but I imagine it should be possible to manipulate them without
resorting to copying between haskell and C.