Go Exercise: Slices - http://tour.golang.org/moretypes/14

img.go

package main

import "golang.org/x/tour/pic"

func Pic(dx, dy int) [][]uint8 {
	slc := make([][]uint8, dy)

	for x := range slc {
		slc[x] = make([]uint8, dx)
		for y := range slc[x] {
			// Create equations below
			eq1 := (x + y) / 2
			//eq2 := x * y
			//eq3 := x ^ y
			//eq4 := (x ^ y) * (x ^ y)
			slc[x][y] = uint8(eq1)
		}
	}
	return slc
}

func main() {
	pic.Show(Pic)
}