GO语言练习:map基本用法
1、代码
2、运行
1、代码
文件: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] PersionInfo 12 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、运行
$ go run map.go Did not find persion with ID 1234. Found persion Tom with ID 12345.
作 者:fengbohello
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