Alistair Bayley wrote: > OTOH, if you want to do anything useful with any language you have to > learn to do IO (and simple IO is tackled early in most languages), and > therefore you must deal with Monads. I often wish that Haskell books > and tutorials would introduce IO earlier; it is often near the end, in > the "advanced" topics (after you've been dazzled/saturated by the > magic you can do with list functions and comprehensions, and how easy > it is to create abstract datatypes, and write parsers, etc...).
I agree with this. And for what it's worth, in my textbook "The Haskell School of Expression" (http://haskell.org/soe), I introduce IO on page 37, Chapter 3 (out of 350 pages and 24 chapters). This is even before I talk about polymorphism and higher-order functions! I talk about "actions" and "sequencing", and I use the do syntax, but I do not mention monads at all. Monads are introduced on page 251, Chapter 18. -Paul Hudak _______________________________________________ Haskell-Cafe mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/haskell-cafe
