结构体

  1. struct Point {
  2. x int
  3. y int
  4. }
  5. p := Point{
  6. x: 10
  7. y: 20
  8. }
  9. println(p.x) // Struct fields are accessed using a dot

上面的结构体都在栈上分配。如果需要在堆上分布,需要用取地址的&操作符:

  1. pointer := &Point{10, 10} // Alternative initialization syntax for structs with 3 fields or fewer
  2. println(pointer.x) // Pointers have the same syntax for accessing fields

V语言不支持子类继承,但是可以嵌入匿名结构体成员:

  1. // TODO: this will be implemented later in June
  2. struct Button {
  3. Widget
  4. title string
  5. }
  6. button := new_button('Click me')
  7. button.set_pos(x, y)
  8. // Without embedding we'd have to do
  9. button.widget.set_pos(x,y)