我正在嘗試創建元素映射。我想使用指針而不是整數作為鍵。問題是......我一直得到相同的指針。不管我創造了多少次。為什么是這樣？如果可能的話，如何在不使用 unsafe 包的情況下獲得真正的指針。package mainimport (    "fmt")type Thingy struct{}var things map[*Thingy]intfunc main() {    things = make(map[*Thingy]int)    thing1 := new(Thingy)    tracePointer("thing1", thing1)    things[thing1] = 1    thing2 := new(Thingy)    tracePointer("thing2", thing2)    things[thing2] = 2    thing3 := &Thingy{}    tracePointer("thing3", thing3)    things[thing3] = 3    fmt.Printf("Amount of things: %d\n", len(things))}func tracePointer(identifier string, obj interface{}) {    fmt.Printf("%s pointer: %p\n", identifier, obj)}輸出：thing1 pointer: 0x546570thing2 pointer: 0x546570thing3 pointer: 0x546570Amount of things: 1