empty_slice.go

package main

import "fmt"

type Foo struct {
	whitelist []string
}

func main() {
	foo := new(Foo)
	foo.whitelist = []string{}
	if foo.whitelist == nil {
		// these lines won't be printed
		fmt.Println("Whitelist is nil")
		fmt.Println(foo.whitelist)
	}
}