If the nil value for a slice is the empty slice, then why do the following two variable definitions differ in behavior? var x []int; y := []int{}; Both pr

If the nil value for a slice is the empty slice, then why do the following two variable definitions differ in behavior? var x []int; y := []int{}; Both produce a slice of capacity zero, except `x` serializes to null and `y` serializes to an empty array.