我正在做這種數(shù)組復(fù)制來映射package mainimport ( "fmt")type Test struct { Id int Name string}func main() { tlist := []Test{ Test{1, "mike"}, Test{2, "clara"}, Test{3, "stefan"}, } tmap := make(map[int]*Test) // copy to map here for _, t := range tlist { tmap[t.Id] = &t fmt.Printf("list to map %v\n", tmap[t.Id]) } // debug for _, t := range tmap { t.Name = t.Name + "A" fmt.Printf("%v\n", t) } for _, t := range tlist { fmt.Printf("list after %v\n", t) }}結(jié)果輸出是地圖只包含所有地圖項(xiàng)中的最后一個(gè)數(shù)組項(xiàng)。list to map &{1 mike}list to map &{2 clara}list to map &{3 stefan}&{3 stefanA}&{3 stefanAA}&{3 stefanAAA}list after {1 mike}list after {2 clara}list after {3 stefan}為什么在第一個(gè)循環(huán)中正確打印每個(gè)地圖元素后打印地圖時(shí)地圖只包含最后一個(gè)數(shù)組的項(xiàng)目?
將數(shù)組復(fù)制到地圖會(huì)導(dǎo)致地圖中的相同項(xiàng)目
慕尼黑8549860
2022-06-27 16:08:31