Size in Go

In Go, the len function is used to get the length of an array. Here's an example:

package main
import "fmt"
func main() {

    numbers := [5]int{1, 2, 3, 4, 5}

    

    length := len(numbers)

    fmt.Println("The length of the array is:", length)

}

Output:

The length of the array is: 5

In this example, we have declared an array called numbers with 5 elements and initialized its values. We have then used the len function to get the length of the array and stored it in the length variable. Finally, we have printed out the length of the array to the console.

Note that the len function also works with slices and maps in Go.