Re: Proposal: Applicative => Monad: Call for consensus

On Wed, 2011-01-05 at 10:03 -0800, Iavor Diatchki wrote:

Hi,

On Wed, Jan 5, 2011 at 8:04 AM, wrote: On Tue, 4 Jan 2011, Iavor Diatchki wrote: In my completion monad, "join" is more efficent than "bind id"

This suggests that your monad will work less efficiently if you use it with the do-notation.

Join and bind are very similar and, at least in standard Haskell code, I think that "bind" has proven to be a lot more useful then "join".

Also, as I mentioned before, if people find "join" easier to define then "bind", then they can define "join", and then define "bind" in terms of that---I am still not convinced that we need a new method added to the Monad class.

-Iavor

I think that's the least of the problems. The method may not even be exported by Prelude just like (<$), which can be defined in terms of fmap. Regards