Re: [Haskell-cafe] Re: Map list of functions over a single argument

Gene A wrote:

Well this is not very sexy, no monads or anything, but I kinda believe in Keep It Simple:

Prelude> let revApply a f = f a Prelude> let rMap a fs = map (revApply a) fs Prelude> rMap 2 [(*4),(^2),(+12),(**0.5)] [8.0,4.0,14.0,1.4142135623730951]

Note that revApply here is precisely flip ($). And ($a) is the same as flip ($) a. So this reduces to one of the earlier examples rather quickly. It is possible to argue 'it's nice to give revApply a name'. It's also possible to argue 'taking a section of $ is even better than naming revApply'. Beauty in the eye of the beholder... Jules