Re: [Haskell-cafe] an array of pointers in FFI?

Thanks Bulat! So since we are "talking" ;^) .... is there a function already in Foreign that will allow me to ... [a] -> Ptr (Ptr ()) i.e. map a list of type "a" to an array of ptrs of type "a"? Kind regards, Vasili On Fri, Aug 1, 2008 at 12:53 AM, Bulat Ziganshin wrote:

Hello Vasili,

Friday, August 1, 2008, 9:08:05 AM, you wrote:

...

Is a (Ptr (Ptr a)) a polymorphic representation of an array of pointers of type "a"? I want to pass an array of pointers to a C

function.

use Ptr (Ptr ())

Ptr () in haskell is like void* in C, it's used to represent pointer to arbitrary type. you can use castPtr to cast pointers between different types

-- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com