I am trying to complete the Exercise: Slices
from the Go Tour.
However I don't really understand what I'm being asked to do.
Implement Pic. It should return a slice of length dy, each element of which is a slice of dx 8-bit unsigned integers. When you run the program, it will display your picture, interpreting the integers as grayscale (well, bluescale) values.
I have the following code
package main
import "golang.org/x/tour/pic"
func Pic(dx, dy int) [][]uint8 {
a := make([][]uint8, dy)
return a
}
func main() {
pic.Show(Pic)
}
I have created the slice of length dy so far. However I don't understand the next step. Do I need to create a for loop in which I assign every element of my slice to a value in the range of dx? I don't ask for code but rather for an explanation/clarification