[Haskell-cafe] Newclasses
John Lato
jwlato
Fri Oct 4 00:53:06 UTC 2013
I don't really understand what a "newclass" is supposed to be.
On Thu, Oct 3, 2013 at 2:15 PM, Wvv <vitea3v at rambler.ru> wrote:
>
> newclass Bind a => Monad a => BMonad a where { (>>=) = (>>-) }
I think this means that `BMonad` is supposed to be a new class that has
both Bind and Monad in scope, the same as
class (Bind a, Monad a) => BMonad a
except that the Monad instance's (>>=) is replaced by (>>-).
If that's what "newclass" means, it seems absolutely pointless.
Does it instead mean that one could write
instance Bind MyType where
instance BMonad MyType
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