Re: [Haskell-cafe] Re: Converting IO [XmlTree] to [XmlTree]

Steffen Schuldenzucker wrote:

Uhm, isn't it:

class (Functor f) => Pointed f where pure :: a -> f a -- singleton, return, unit etc.

Got it from: The Typeclassopedia by Brent Yorgey (forgot the URL, sorry)

Yes, but also: http://thread.gmane.org/gmane.comp.lang.haskell.cafe/54685 So maybe functor is not strictly more powerful than pointed and vice versa. I don't know. Martijn.