proposal #2461: add Traversable generalizations?of?mapAccumL?and mapAccumR

[Nicolas Pouillard]

Excerpts from Ross Paterson's message of Fri Aug 01 16:16:04 +0200 2008:
> Quoting Nicolas Pouillard <nicolas.pouillard at gmail.com>:
> > I've also understood "<**> = flip <*>" when reading the docs :(
> 
> Clearly the docs need improving.  Does anyone have any comments on the
> proposal itself?
> 

I'm for the mapAccum{L,R} proposal, and the Backward, Applicative instance.

-- 
Nicolas Pouillard aka Ertai
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