GoLang Tour Slice code solution

sliceExample.go

package main

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

func MakePic(val (func(int, int) uint8)) (func(int, int) [][]uint8) {

	var pic = func(dx, dy int) ([][]uint8) {
	
		var dyslice = make([][]uint8, dy)
		for i := range dyslice {
			dyslice[i] = make([]uint8, dx)
		}
	
		for x := 0; x < dx; x++ {
			for y := 0; y < dy; y++ {
				dyslice[x][y] = val(x, y)
			}
		}

		return dyslice
	}
	
	return pic
}



func power(x, y int) uint8 {
	return (uint8)(x^y)
}

func calc(x, y int) uint8 {
	return (uint8)((x+y)/2)
}

func mult(x, y int) uint8 {
	return (uint8)(x*y)
}

func main() {
	//pic.Show(MakePic(power))
	pic.Show(MakePic(calc))
	//pic.Show(MakePic(mult))
}