module Structures

type public StructureType =
    struct
      val x: float  
    end

// or
[<StructAttribute>]
type public StructureType2 =
    val x: float


// In Point3D, three immutable values are defined.
// x, y, and z will be initialized to 0.0.
type Point3D =
   struct
      val x: float
      val y: float
      val z: float
   end

// In Point2D, two immutable values are defined.
// Point2D has an explicit constructor.
// You can create zero-initialized instances of Point2D, or you can
// pass in arguments to initialize the values.
type Point2D = 
    struct 
        val X: float 
        val Y: float 
        new(x: float, y: float) = 
            { 
                X = x; 
                Y = y 
            }
end