Maurício wrote:
A few months ago, I declared here that I intended to get USB working in Haskell. After a lot of thinking on what could be a realistic goal, this is where I've got:
http://hackage.haskell.org/packages/archive/bindings-libusb/0.0.3/doc/html/B...
I know this is probably a disapointment for most of you, but please try to understand the concept at the base package:
http://hackage.haskell.org/cgi-bin/hackage-scripts/package/bindings-common-0...
What I'm doing is to group under these bindings-* packages a Haskell link to well established libraries. But Bindings.* modules are not supposed to be Haskell code, but C (or other languages, in the future?) code in Haskell.
You may ask what good is this. Well, suppose you want to write a nice module, using GADTs, Template Haskell and STM, using functionality from libusb or other libraries bindings-* have links to. Just learn to use Foreign.Ptr, Foreign.Marshable and friends. Forget about the details of FFI, it's already done, and it's really time consuming and boring, believe me, I've been there.
seconded: the Haskell FFI is really nice BUT it's a potential for type mismatches that cause crashes! So, there's an advantage to put them all in one package that's easier to check, and not worry as much in the packages that *use* the bindings. -Isaac