import { contains } from "https://deno.land/x/itertools@v1.1.1/builtins.ts";
Returns true when any of the items in the iterable are equal to the target object.
Examples:
contains([], 'whatever') // => false
contains([3], 42) // => false
contains([3], 3) // => true
contains([0, 1, 2], 2) // => true