-- 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() {
		test [$val + fmt.printf("%d", $key),] {}
	}
	include foo() # as included

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

-- OUTPUT --
Vertex: test[a0]
Vertex: test[b1]
Vertex: test[c2]