On Tue, 2009-03-24 at 23:15 +0100, Manlio Perillo wrote: > Dan Piponi ha scritto: > >> Miguel Mitrofanov wrote: > >>> takeList = evalState . mapM (State . splitAt) > > > >> However, ironically, I stopped using them for pretty > >> much the same reason that Manlio is saying. > > > > Are you saying there's a problem with this implementation? It's the > > only one I could just read immediately. > > Yes, you understand it immediately once you know what a state monad is. > But how well is introduced, explained and emphasized the state monad in > current textbooks? > > When I started learning Haskell, the first thing I learned was recursion > and pattern matching.
You know, this might actually need to be looked into. You need to know recursion and pattern-matching to *write* re-usable higher-order functions, but how appropriate is that as the first thing taught? jcc _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
