mfix as an effect

Ashley Yakeley ashley at
Mon Jan 12 01:36:07 EST 2004

In article <20040112005508.0B9DEAB8D at>,
 oleg at wrote:

> That is, Ashley Yakeley claimed that his Haskell implementation of
> Scheme implements letrec via Y -- and yet his implementation is
> consistent with the R5RS semantics, which mandates the updateable-cell
> letrec.

I am in any case withdrawing this claim, as it turns out my 
implementation of mfix uses IORefs explicitly.

Ashley Yakeley, Seattle WA

More information about the Haskell mailing list