Re: transformers 0.4: change in accessor function exports?

Am 07.05.2014 13:43, schrieb Michael Snoyman:

In the case here, the syntax:

import Control.Monad.Trans.Reader (ReaderT (..))

is very convenient. But it's true that you don't really gain much from the distinction between these two:

import Control.Monad.Trans.Reader (ReaderT (ReaderT, runReaderT)) import Control.Monad.Trans.Reader (ReaderT (ReaderT), runReaderT)

Perhaps the latter should be considered a better approach, since it's more resilient to changes in datatypes.

However, even if imported in the second way, runReaderT identifier can be used in record field update syntax. I guess it would be more consistent to allow only the use as a function when imported like an ordinary function.