Re: Proposal: merge either into transformers

On Sat, Apr 26, 2014 at 09:28:47AM +0100, Ross Paterson wrote:

On Sat, Apr 26, 2014 at 09:16:57AM +0300, Roman Cheplyaka wrote:

...

* Ross Paterson [2014-04-26 01:21:09+0100]

...

Instead of EitherT, the next version will deprecate ErrorT in favour of a transformer ExceptT with base monad Except. The idea is to have analogous transformers and monads

ExceptT : Except : Either WriterT : Writer : (,) ReaderT : Reader : (->)

Great! When do you plan to make a release?

Let's say Wednesday, if no-one notices a major problem.

I'll put it off a couple of days, as there's currently discussion of two issues: - strict writer - definition of (<|>)/mplus for ExceptT