[Haskell-cafe] Re: MonadList?

[Ashley Yakeley]

Michael Shulman wrote:

> This is because (ErrorT e []) inherits its
> instance of MonadPlus from Error, not from [].  (Is there a reason for
> this, or is it just assumed that this is the more frequently desired
> behavior?)

It's a flaw in MonadPlus, since it allows two different behaviours and 
really should be two different classes. See 
<http://haskell.org/haskellwiki/MonadPlus>.

-- 
Ashley Yakeley