"David House"
Or perhaps (?:) or something like that,
This has come up a few times on #haskell, and the consensus is that a tertiary (?:) operator isn't possible because of the deep specialness of (:). However, you can simulate it pretty well:
infixr 1 ? (?) :: Bool -> (a, a) -> a True ? (t, _) = t False ? (_, t) = t
length "hello" > 4 ? ("yes it is!", "afraid not")
HaXml has a lifted version of C's tertiary operator, which matches C's syntax even more closely: data ThenElse a = a :> a infixr 3 ?>, :> (?>) :: (a->Bool) -> ThenElse (a->b) -> (a->b) p ?> (f :> g) = \c-> if p c then f c else g c You can drop it back down to the term level easily enough: (?>) :: Bool -> ThenElse a -> a p ?> (t :> e) = if p then t else e Because the operators are right associative, you don't need parens when you use it: length "hello" == 4 ?> "yes it is!" :> "afraid not" Regards, Malcolm