errors/cs0121-5.cs

   1 // CS0121: The call is ambiguous between the following methods or properties: `V3.operator -(V3, V3)' and `V2.operator -(V2, V2)'
   2 // Line: 45
   3
   4 public struct V3
   5 {
   6         public float x, y, z;
   7
   8         public V3 (float ix, float iy, float iz) { x = ix; y = iy; z = iz; }
   9
  10         static public V3 operator - (V3 lhs, V3 rhs)
  11         {
  12                 return new V3 (lhs.x - rhs.x, lhs.y - rhs.y, lhs.z - rhs.z);
  13         }
  14 }
  15
  16 public struct V2
  17 {
  18         public float x, y;
  19
  20         public V2 (float ix, float iy) { x = ix; y = iy; }
  21
  22         public static implicit operator V2 (V3 v)
  23         {
  24                 return new V2 (v.x, v.y);
  25         }
  26
  27         public static implicit operator V3 (V2 v)
  28         {
  29                 return new V3 (v.x, v.y, 0);
  30         }
  31
  32         static public V2 operator - (V2 lhs, V2 rhs)
  33         {
  34                 return new V2 (lhs.x - rhs.x, lhs.y - rhs.y);
  35         }
  36 }
  37
  38 internal class Test
  39 {
  40         static void Main ()
  41         {
  42                 V2 a = new V2 ();
  43                 V3 b = new V3 ();
  44
  45                 V2 s = a - b;
  46         }
  47 }