Double Loop (updates and pointers)

main.go

package main

import "fmt"

type score struct {
	points int
}

type frame struct {
	scores []score
}
type game struct {
	frames [3]frame
}

var f1 = frame{[] score{score{1},score{2}, score{3}}}
var f2 = frame{[] score{score{1},score{2}, score{3}}}
var f3 = frame{[] score{score{1},score{2}, score{3}}}

func (g *game) doIt() {
	for i, frame := range g.frames {
		for j := range frame.scores {
			frame.scores[j].points = 9
		}
	}
}

func main() {
	g := game {[3]frame{f1, f2, f3}}
	g.doIt()
	fmt.Println(g.frames)
}