Re: [Haskell-cafe] deriving

I'm not getting it. Are you thinking that Bool itself "is derived form these classes", rather than those four instances for Bool? - Conal On Mon, Apr 7, 2008 at 9:12 AM, PR Stanley wrote:

Hi data Bool = False | True deriving (Eq, Or, Show, Read)

Bool is an instance of Eq, Ord, Show and Read. It is derived form these classes. If that is the meaning of the keyword deriving then wouldn't a different keyword such as from or derivative or even derivation be closer to the semantics of the concept? Discuss :-)

Cheers, Paul

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