-- main.mcl --
import "fmt"

$map = {0 => "a", 1 => "b", 2 => "c",}

$key = 42 # should be out of scope

forkv $key, $val in $map {

	class foo($x) {
		func result($s) {
			$s + $x + $val
		}
	}
	include foo($val) as included

	$s = fmt.printf("%s is %d", included.result($val), $key)
	test [$s,] {}
}

-- OUTPUT --
Vertex: test[aaa is 0]
Vertex: test[bbb is 1]
Vertex: test[ccc is 2]