26 Jun
2012
26 Jun
'12
9:15 p.m.
On 27/06/2012, at 12:51 PM, John Lato wrote:
data Tree a = Leaf a | Branch (Tree a) ( Tree a) deriving (Foldable, Show)
While I am familiar with deriving (Show), I am not familiar with deriving (Foldable), which looks rather useful. http://www.haskell.org/ghc/docs/7.4.2/html/users_guide/deriving.html just says "With -XDeriveFoldable, you can derive instances of the class Foldable, defined in Data.Foldable." but it provides no details. Would you care to explain more about deriving (Foldable)?