import "maths" for Math, Vector
var poke_vector = Fiber.new {
Vector.invalid()
}
System.print("Hello World")
System.print(poke_vector.try())
var vector = Math.new_vector(3, 4)
System.print(vector)
System.print(vector.x)
System.print(vector.y)
var ovector = vector.copy()
vector.x = (10.2)
vector.y = (vector.x * 2)
System.print(vector.x)
System.print(vector.y)
System.print(Vector.read([vector, ovector, vector]))