[Haskell-cafe] Re: [Haskell-beginners] folds -- help!
haskell at colquitt.org
Sat Mar 14 10:03:21 EDT 2009
> That's why I said "for appropriate g and f". But I see that my
> wording was misleading.
Thanks for following up! I had thought you were arguing that foldl and
foldr were easily and intuitively interchangeable; they're surely not so
Now I think you're arguing that given strict oplus, each can be generally
expressed in terms of the other, allowing for different space/time
Thanks for clarifying. I should have paid more attention to your
"appropriate g and f" qualifier.
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