Mastering Go - Second Edition

A tip on finding out the dimensions of an array

In this section, I am going to present you with a way to find the dimensions of an array using the Go code found in dimensions.go. The same technique can be used for finding out the dimensions of a slice.

The Go code of dimensions.go is as follows:

package main 
 
import ( 
    "fmt" 
) 
 
func main() { 
    array := [12][4][7][10]float64{} 
    x := len(array) 
    y := len(array[0]) 
    z := len(array[0][0]) 
    w := len(array[0][0][0]) 
    fmt.Println("x:", x, "y:", y, "z:", z, "w:", w) 
} 

There is an array called array with four dimensions. The len() function allows you to find its dimensions when provided with the right arguments. Finding the first dimension requires a call to len(array), whereas finding the second dimension ...