Re: Posix library ,Concurrent Haskell and Haskell IO sub-system

In local.glasgow-haskell-users, you wrote:

I use the Posix library since I have to communicate via a pipe with another UNIX process.

Therefore I have to use fdRead :: Fd -> ByteCount -> IO (String,ByteCount)

Why do you "have to" use an Fd? A regular handle should be sufficient. Where do you get the Fd from? Did you consider lifting the Fd back to a Handle? If you really need to read exactly ByteCount bytes, you could go the hard way and set the handle to unbuffered IO and call hGetChar n times. -- http://www-i2.informatik.rwth-aachen.de/stolz/ *** PGP *** S/MIME rage against the finite state machine