[Haskell-cafe] More STUArray questions

[Martin Percossi]

Thanks for the tip. A modified version of your suggestion worked for me:

unsafeFreezeMatrix :: MMatrix s -> ST s Matrix
unsafeFreezeMatrix (MMatrix x1 x2 marray) = do block <- unsafeFreeze marray
                                               return $ Matrix x1 x2 block


However, just out of curiosity, I'm still curious at how I could do the
runSTMatrix, which would really be the icing on the cake in terms of client
usability.