Henning Thielemann <[EMAIL PROTECTED]> writes: > > > -- Either variant allowing for both. > > > data Which a b = One a | Other b | Both (a,b) deriving (Eq, Show) > > Probably not. Is (Maybe a, Maybe b) also appropriate?
Not really, precisely because: > This also contains the case (Nothing, Nothing). which is cannot occur in this particular context... > What application do you think of? Merging sequences of temporal values? Regards, Rohan _______________________________________________ haskell-art mailing list haskell-art@lists.lurk.org http://lists.lurk.org/mailman/listinfo/haskell-art
