Let's see... cinits [] = [[]] cinits (hd:tl) = [] : [ hd : rest | rest <- cinits tl ]
Well, ehm, I'm trying to understand "map" in "map" functions, however I do understand list comprehensions. But I don't think I can write "any" "map" in "map" function into a list comprehension can I? 2009/4/14 Daniel Fischer <[email protected]> > Am Dienstag 14 April 2009 10:39:28 schrieb Tsunkiet Man: > > Hello, > > > > I can hardly imagine how the following code works: > > > > cinits :: [a] -> [[a]] > > cinits [] = [[]] > > cinits (x:xs) = [] : map (x:) (cinits xs) > > > > can someone give me a good explaination? > > Perhaps it's easier to follow as a list comprehension: > > cinits [] = [[]] > cinits (hd:tl) = [] : [ hd : rest | rest <- cinits tl ] > > > > > (I understand it a bit, but it's really hard for me to figure out how a > map > > in a map function works.) > > > > Thank you for your time, > > > > Tsunkiet > >
_______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
