Re: unboxed arrays for nhc/jhc

Bulat Ziganshin wrote:

this implementation is already compatible with Hugs and GHC, now i plan to make it NHC-compatible. i have the following question - is NHC implements

1) strict ST monad 2) unsafeIOtoST operation 3) Data.Array.*

No, nhc98 implements none of these.

if nhc don't supports ST/unsafeIOtoST, then i plan to use the following ST monad emulation:

type ST a = IO a

What happened to the other type parameter? type ST s a = ...

unsafeIOtoST = id runST = unsafePerformIO

is this can work?

You will also need to define aliases for ST-bound datatypes like type STRef s a = IORef a Regards, Malcolm