请讲解一下加红部分是什么意思?
程序代码:
package main import "fmt" type Vertex struct { X int Y int } func main() { v := Vertex{1, 2} v.X = 4 fmt.Println(v) }
package main import "fmt" type Vertex struct { X int Y int } func main() { v := Vertex{1, 2} v.X = 4 fmt.Println(v) }