On 20 March 2012 12:27, Jerzy Karczmarczuk <[email protected]> wrote: > Richard O'Keefe: > > class (Eq a, Show a) => Num a > where (+) (-) (*) negate abs signum fromInteger > > where functions are for good reason not members of Eq or Show. > > This is an old song, changed several times. I have no intention to discuss, > but please, Richard O'Keefe: > WHICH GOOD REASONS??
Because there are no sensible ways of writing such instances? -- Ivan Lazar Miljenovic [email protected] http://IvanMiljenovic.wordpress.com _______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
