// A struct is a collection of 'fields'

package main

import "fmt"

type Vertex struct {
    X int
    Y int
}

func main() {
    v := Vertex{1, 2}
    p := &v

    // indirect, access member, increment
    (*p).X++

    // or alternatively, implicitly indirect and
    // increment
    p.X++

    fmt.Println(v)
}