3 ms·

I don't know about the other lisp dialects, but the anonymous function is actually not needed in the Clojure version: (filter even? [1 2 3 4])

• vito 16y ago
  Same for the others. (filter even? '(1 2 3 4)) (remove-it-not 'evenp '(1 2 3 4))
  • lfborjas 16y ago
    Oh, right! even? is already a function, d'oh!
  • angus77 16y ago
    I think you mean 'remove-IF-not.
  • serichsen 16y ago
    Or: (remove-if 'oddp '(1 2 3 4))