Re: [Haskell-beginners] \x -> x < 0.5 && x > -0.5

Michael Mossey wrote:

Eliminating variables and working with function combinations has benefits. The one suggestion I've seen here that seems to be right on the money is

liftM2 (&&) (< 0.5) (> -0.5)

yep, I might not write it myself, but it's definitely the only one straightforward enough to perhaps justify itself. now for a completely different suggestion; you write

filter (\x -> x < 0.5 && x > -0.5) xs

but as a reader I would find it clearer to switch the order to numerical: filter (\x -> x > -0.5 && x < 0.5) xs (in this particular instance, we can observe numerical properties and even change to (\x -> abs x < 0.5) if we so desire. Which can be written point-free as ((< 0.5) . abs), if you want to.) -Isaac