Hi Quan
I am not sure how to express f1 with map? how do I say
(lambda (ls)
(map (lambda (x) (list x))
ls))
in Haskell? map ([]) ?
map (:[]), :[] takes a single element and puts it into a list. Some
people refer to this as "box"
The final f3 clause can be made a bit neater:
f3 la@(a:as) lb@(b:bs) | sum a <= sum b = a : f3 as lb
| otherwise = b : f3 la bs
Additionally, if it was me I'd refer to a:as on the RHS, rather than
giving it a name with the @ pattern, but thats a personal question of
style.
Thanks
Neil
_______________________________________________
Haskell-Cafe mailing list
[email protected]
http://www.haskell.org/mailman/listinfo/haskell-cafe
