Re: [Haskell-cafe] APIs

G'day all. Quoting John Meacham :

I think it is easier just to declare it as Enum..

data ParentsFlag = DontCreateParents | CreateParents deriving(Enum)

now (toEnum . fromEnum) will convert between ParentsFlag and Bool.

Except that it's still not clear whether True corresponds to CreateParents or not. I'd do it by providing functions with meaningful names, like this: createParentsIfTrue :: Bool -> ParentsFlag Cheers, Andrew Bromage