Flipped / reversed fmap (<$>)?

Question

I found defining the following

(%)  = flip fmap

I can write code like this:

readFile \"/etc/passwd\" % lines % filter (not          


        

Answer 1

-- (.) is to (<$>) as flip (.) is to your (%).  

I usually define (&) = flip (.) and it's just like your example, you can apply function composition backwords. Allows for easier to understand points-free code in my opinion.