Hello Donald, Saturday, May 13, 2006, 11:47:34 AM, you wrote:
* Visit haskell.org * Click on "Books and tutorials" * Scroll to "Using Monads" * First entry in the list is this paper.
but novices don't know what monads is a Haskell way to do I/O and interface with C!
It was certainly dismaying to see that even the simplest IO requires at least a minimal understanding of monads,
i think that most of Haskell programmers don't know anything about monads except that they helps in doing I/O and other funny things :)
the automated ones, seemed to handle the case of passing numerical arrays to C, and having them get updated and passed back. That is my primary interest in the FFI and yet no obvious solution or example could be found after days of internet searching and pouring over tutorials etc.
Regarding arrays, generally you'd use a Foreign array, allocate it on the C side, and access it via a Foreign Ptr, no marshalling.
it's named StorableArray -- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com