Proposal: Strict scanl, scanl1 and mapAccumL

[Niklas Hambüchen]

On Wed 05 Dec 2012 07:56:10 JST, Bas van Dijk wrote:
> I would like to drop the proposal for adding scanl', scanl1' and mapAccumL'.

Would you instead propose a headStrict equivalent into Data.List?

It seems very useful to have it there, especially because the haddocks 
could refer to it for those functions where forcing-by-foldr is 
sufficient.