go-exercise-slices.go

package main

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

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

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