Haskell Platform proposal: Add the vector package

[Johan Tibell]

On Mon, Jun 18, 2012 at 4:09 PM, Roman Leshchinskiy <rl at cse.unsw.edu.au> wrote:
> ForeignPtrs can be unpacked, just not manually (which is a GHC bug, IMO, I should report it):
>
> data Vector a = Vector {-# UNPACK #-} !Int
>                       {-# UNPACK #-} !(ForeignPtr a)
>
> ByteString just has some room for optimisation here ;-)

I probably just remembered the ByteString optimization incorrectly. My
apologies. I think the Addr# field was moved to the top of ForeignPtr
(not to the PS constructor itself) to support unpacking.

-- Johan