Exercise: Slices

gistfile1.go

// https://tour.golang.org/moretypes/14
package main

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

func Pic(dx, dy int) [][]uint8 {
	mything := make([][]uint8, dy)
	for i := 0; i < dy; i++ {
		mything[i] = make([]uint8, dx)
	}
	for i := 0; i < dy; i++ {
		for j := 0; j < dx; j++ {
			mything[i][j] = uint8((i + j) / 2)
		}
	}
	return mything
}

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