The Way to Go/

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Multidimensionality

Multidimensionality

This lesson discusses how to handle multidimensional sequences of data in Go.

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Multidimensional arrays

Arrays are always 1-dimensional, but they may be composed to form multidimensional arrays, like:

[3][5]int
[2][2][2]float64

The inner arrays always have the same length. Go’s multidimensional arrays are rectangular. Here is a code snippet which uses such an array:

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package main
const (
    WIDTH = 1920    // columns of 2D array
    HEIGHT = 1080   // rows of 2D array
)
type pixel int  // aliasing int as pixel
var screen [WIDTH][HEIGHT]pixel     // global 2D array
func main() {
    for y := 0; y < HEIGHT; y++ {
        for x := 0; x < WIDTH; x++ {
            screen[x][y] = 0    // initializing value to 2D array
        }
    }
}

In the code above, we set two constants WIDTH and HEIGHT at line 4 and line 5, which determine columns and rows of a 2D array in ...