Re: major missing piece to arrays?

On Thu, Jul 15, 2004 at 04:20:38PM +0200, Jérémy Bobbio wrote:

memcpy is available in Foreign.Marshal.Utils:

copyBytes :: Ptr a -> Ptr a -> Int -> IO ()

Copies the given number of bytes from the second area (source) into the first (destination);the copied areas may not overlap

Here is the result of a quick try to implement fast copy using it and Data.Array.Storable:

Yeah, I know I can copy areas of memory allocated via the foreign library or C code around. What I am looking for is an efficient way to work with the standard Arrays as provided by Data.Array. Also, in my tests, arrays implemented via ByteArray# or Ptr a seem to be signifigantly faster than those implemented via ForeignPtr. Is this expected? John -- John Meacham