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                #### 創建map ``` //key:int value:string map的長度是自動擴容的,map中的數據是無序存儲的 m:=make(map[int]string, 1) m[1]="張三" m[10]="李四" for k,v:=range m{ fmt.Println(k,v) } ``` #### 是否存在 ``` //判斷key是否存在 _,ok:=m[1] if ok { fmt.Println("cun zai") } ``` #### 刪除 ``` //刪除 delete(m, 1) ``` #### map作為函數參數 ``` import "fmt" func main() { m := make(map[string]string, 1) m["sn"] = "sn...." m["ln"] = "ln..." for k,v := range m{ fmt.Println(k, v) } test(m) for k,v := range m{ fmt.Println(k, v) } } func test(m map[string]string) { m["lc"] = "lc.." } ```
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