On Thu, Apr 8, 2010 at 3:38 PM, Isaac Dupree <ml@isaac.cedarswampstudios.org> wrote:

This parallelism also suggests to me that <$$> should be placed (only) in Control.Applicative, which is where <*>, <$>, and <**> reside. Yeah, I know that's annoying...

<$> is defined or re-exported by both Data.Functor and Control.Applicative. This parallel would probably suggest exporting it from both Data.Functor and Control.Applicative, however.

-Edward Kmett