[Haskell-cafe] missing support for NFData in uvector package

[Manlio Perillo]

Today I noticed that there is no instance declaration for NFData, in the 
uvector package.

The definition is quite simple:

instance NFData a => NFData (UArr a) where
     -- NOTE: UArr is already strict
     rnf array = array `seq` ()

but it is important.

In a my program I was using a tuple of two arrays, and plain `seq` did 
not worked.



Regards  Manlio Perillo