Slices are like references to arrays

A slice does not store any data, it just describes a section of an underlying array.

Changing the elements of a slice modifies the corresponding elements of its underlying array.

Other slices that share the same underlying array will see those changes.

slices-pointers.go

package main
import "fmt"
func main() {
    names := [4]string{
        "John",
        "Paul",
        "George",
        "Ringo",
    }
    fmt.Println(names)
    a := names[0:2]
    b := names[1:3]
    fmt.Println(a, b)
    b[0] = "XXX"
    fmt.Println(a, b)
    fmt.Println(names)
}