Re: FunctorM.fmapM vs. Traversable with GHC-6.4 and GHC-6.8

On Thu, Feb 21, 2008 at 05:39:27AM +0100, Henning Thielemann wrote:

What is the intended way to make a library using FunctorM/fmapM compatible to both GHC-6.4 and GHC-6.8 ?

Just a note, DrIFT 2.2.3 or later (http://repetae.net/computer/haskell/DrIFT/) supports deriving both the Foldable and Traversable classes for arbitrary types, this should alleviate the migration issues somewhat. John -- John Meacham - ⑆repetae.net⑆john⑈