Hello Matthew, Monday, May 29, 2006, 8:04:56 PM, you wrote:
What is the difference between the ForeignArray defined in this source and the StorableArray? The source code of both modules are very similar.
the devil in details :) - StorableArray in 6.4 is slow because it uses ForeignPtr. there are two possible solutions - either speed up ForeignPtr (done in 6.5) or use Ptr instead of ForeignPtr (used in my module). of course in this case you lose all the benefits of ForeignPtr's and in particular you will need to make explicit 'free' if you create such array via 'newArray' or it's derivatives. if you create such array via 'unsafePtrToForeignArray', then you don't need to make any additional steps to free it's memory besides of that required for StorableArray (i.e. in most cases it's the problem of FFI library you are used) simply speaking, if you don't create ForeignArray on the Haskell side, it's as simple in use as StorableArray and as fast as IOUArray -- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com