GO語言練習：map基本用法

這是一個建立於 的文章，其中的資訊可能已經有所發展或是發生改變。

1、代碼

2、運行

1、代碼

　　檔案：map.go

 1 package main 2 import "fmt" 3  4 type PersionInfo struct{ 5     ID string 6     Name string 7     Address string 8 } 9 10 func main(){11     var persionDB map[string] PersionInfo12     persionDB = make(map[string] PersionInfo)13 14     persionDB["12345"] = PersionInfo{"12345", "Tom", "Room 203, ..."}15     persionDB["1"] = PersionInfo{"1", "Jack", "Room 101, ..."}16 17     persion, ok := persionDB["1234"]18     if ok {19         fmt.Println("Found persion", persion.Name, "with ID 1234.")20     } else {21         fmt.Println("Did not find persion with ID 1234.")22     }   23 24     persion, ok = persionDB["12345"]25     if ok {26         fmt.Println("Found persion", persion.Name, "with ID 12345.")27     } else {28         fmt.Println("Did not find persion with ID 12345.")29     }30 }

2、運行

$ go run map.go Did not find persion with ID 1234.Found persion Tom with ID 12345.