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

Whoa... how on earth does this work? How does it interpret the sections as Reader monads?

That's a job for the reader monad.

Lambda Fu, form 53 - silent reader of truth

import Control.Monad import Control.Monad.Reader

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

Regards, apfelmus