Hello Marc, Sunday, January 08, 2006, 3:19:56 AM, you wrote: MW> list2=do { x <- [1,2,3]; guard (odd x); return x} -- <- provided by xerox list3 = [ x | x <- [1,2,3], odd x]
On Sun, Jan 08, 2006 at 12:19:40PM +0300, Bulat Ziganshin wrote: list4= take 2 $ [2*x+1,x<-[0..]] ;-) Hi Bulat.. Thanks for your reply. Of cause I know this version, too. My goal has been to understand why the other versions list1,2rewritten give the same result.. (especially which monadic implementation of >>= is used in each case..) I'm trying to understand this simple example because I want to understand some other monad examples beeing more complicated.. See my comments of the last post for details.. If something is unclear.. Please tell me.. Some hints like: look at the defintion of Monad xy should be sufficiant.. Sincerly Marc