在循环中修改结构[重复]

I would like to iterate through an array of structs and modify each item. However, the structs in the following code remain the same despite being assigned new values. The code compiles fine. Since the struct is self referential, I'm using pointers. I'm not sure if that complicates the later reassignments.

package main
import "fmt"

type Actor struct {
    name string
    i    int
    bff  *Actor
}

func main() {
    var bob Actor
    bob.name = "Bob"
    bob.i = 10
    var sara Actor
    sara.name = "Sarah"
    sara.i = 20
    var john Actor
    john.name = "John"
    john.i = 30
    bob.bff = &sara
    sara.bff = &john
    john.bff = &bob

    actors := []Actor{bob, sara, john}

    for turn := 1; turn <= 3; turn++ {
        fmt.Println("----------Turn", turn, "----------")
        for _, actor := range actors {
            fmt.Println(actor.name, ":  i =", actor.i, "  bff=", actor.bff.name)
            if actor.bff == &john {
                actor.bff = &sara
            } else if actor.bff == &sara {
                actor.bff = &bob
            } else if actor.bff == &bob {
                actor.bff = &john
            }
            actor.i = actor.i + turn
        }
    }
}

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