Re: [Haskell-cafe] User data type with operator contructors only

Donald Bruce Stewart wrote:

kolar:

...

Hello all,

my question probably comes from not reading manual properly. But, why is it not possible to have something like:

infixr 5 :>

data Stack a = a :> (Stack a) | :||

And if yes, how can I do that? I know that lists are a hack in Haskell,

infixr 5 :>

data Stack a = a :> (Stack a) | (:||)

test = 7 :> 8 :> 2 :> (:||)

Not ideal, though, I suppose.

-- Don

Hmm, I see, ghci works, but hugs not. That was my problem. Sorry for asking. I've thought this would work in both. :-( Dusan