tour: Exercise: Slices

[dijonkitchen]

Context: https://tour.golang.org/moretypes/18

x and y need to be clarified that they are the indices for the two for-loops. This is particularly confusing with the dx and dy parameters in the Pic function.

Example:

package main

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

func Pic(dx, dy int) [][]uint8 {
	pixels := make([][]uint8, dy)
	for x := 0; x < len(pixels); x++ {
		pixels[x] = make([]uint8, dx)
		for y := 0; y < len(pixels[x]); y++ {
			pixels[x][y] = (uint8(x) ^ uint8(y))
		}
	}
	return pixels
}

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

[lzantal]

I just asked on twitter about this. How did you get to that solution? I was staring at it for 10 min and had no clue what it is asking me to do.

[dijonkitchen]

Yeah, that's why I made this issue. I think the problem should be clarified because it's confusing.