[Haskell-cafe] What's the deal with Clean?

David Leimbach leimy2k at gmail.com
Tue Nov 3 18:42:24 EST 2009

On Tue, Nov 3, 2009 at 2:16 PM, Tracy Wadleigh <tracy.wadleigh at gmail.com>wrote:

> I had to implement a ring buffer, and I wanted the code using it to be
>> written in Haskell.  I ended up implementing the buffer in C, and wrapping
>> it in FFI from Haskell because implementing a destructive array in Haskell
>> is kind of unwieldy to someone of my experience level.  In Clean, it looks
>> like the uniqueness typing allows for destructive updates in a very
>> controlled manner.
> The ST monad provides this functionality. The
> never-instantiated-in-a-visible-way state parameter of the ST monad provides
> the "uniqueness" required for doing destructive updates in a pure way.

Someone suggested that to me on IRC once I'd already cranked out a C
implementation with FFI bindings.  It's just too easy to use the FFI in
Haskell :-)

If we raise the barrier of FFI, more people will use ST!


> _______________________________________________
> Haskell-Cafe mailing list
> Haskell-Cafe at haskell.org
> http://www.haskell.org/mailman/listinfo/haskell-cafe
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.haskell.org/pipermail/haskell-cafe/attachments/20091103/19cbd9d6/attachment.html

More information about the Haskell-Cafe mailing list