Negate a predicate in Elixir

Question

Let say i have a predicate is_foo?/1 in Elixir I want to use it in a function taking a predicate as an argument, but negated. Is there a way in Elixir to do that simply ?

Answer 1

&(!is_foo? &1) should do it.

Or if you prefer the long form, fn x -> !is_foo? x end