Donn Cave schrieb: > The ordinary lambda comes close - in ghc anyway, it supports > pattern matching. But I can't work out the syntax for multiple > cases, which would obviously be needed to make it practically > useful. > > e.g., this seems to be OK: > getArgs >>= \ (a:_) -> putStrLn (show a) > > but how do you write > getArgs >>= \ [] -> putStrLn "(no arguments)" > (a:_) -> putStrLn (show a) > > (pardon me if I missed where you were going in "case of ...")
Sorry, I'm just jumping into this discussion, but why shouldn't the above work? I.e. extend lambda to accept a group of patterns: \{Pat1 -> exp1; Pat2 -> exp2; Pat3 -> exp3} ? Regards, Sven Moritz _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe