Talk:All About Monads

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ST monad not covered

I was looking for a Haskell abstraction that would suit my needs (an FFI library), and I suspect that ST would be the one (need to elaborate), but since this article doesn't describe it, I had the impression that although the idea (of ST) is simple, there is no such standard thing in Haskell.--Imz (talk) 14:59, 27 February 2015 (UTC)

Why "===" instead of "=" on the html page?

Why "===" instead of "=" on the html page?

e.g. data Maybe a === Nothing | Just a

in the pdf file this is the correct "data Maybe a = Nothing | Just a"