Casey -
Yep your use case is a good one. It's my approach too and this set up should achieve it
The confusion about which loads up first --
The Haskell .a must have a main(). So it must be the entry point. So it must start first. It then launches the objc's "c_main" so that normal control/flow can occur.
Then you simply call your Haskell code whenever you want and essentially you can just sleep the haskell's main forever
Hope this helps -- don't think I'm an expert, I just happen to have the identical questions as you and I started 2 days before you :)
On Dec 1, 2012, at 12:28 PM, Casey Basichis
Hi,
I've been reading about the FFI for getting Haskell to communicate with C code (C++ really).
My intention is to handle most of the app - the GUI events in C++ and sending all of the processing logic in Haskell - including a database etc.
Is the FFI the right tool for a situation where, while used extensively, Haskell is more or less there to take in data, like lists and spit out data like vectors etc back to C.
I am looking to get a few test running where I can pass data in an out of Haskell like vectors of floats.
Also, I noticed on the wiki example:
Haskell start c_main I was a little confused by this. Does Haskell load up first because its a library? I couldn't figure out where it was being called in the C code or why Haskell loads first. Not a biggie just a bit of an impediment in understanding how it all works.
Thanks, Casey
-- Casey James Basichis Composer - Cartoon Network http://www.caseyjamesbasichis.com caseybasichis@gmail.com 310.387.7540 _______________________________________________ iPhone mailing list iPhone@haskell.org http://www.haskell.org/mailman/listinfo/iphone