```go package main import( "fmt" "time" ) //class Thread type Thread struct{ name string } func (this *Thread)run()string{ fmt.Println(this.name, "start") return "" } //class Threads type Threads struct{ t map[string]Thread } func (this *Threads)runn()string{ for key, v:=range this.t{ fmt.Println("Key:",key, "Value:", v.name) go v.run() //这个地方输出的不是我预期的， why } return "" } func main(){ fmt.Println("main start") var tt Threads = Threads{} tt.t = make(map[string]Thread) tt.t["one"] = Thread{name:"one1"} tt.t["two"] = Thread{name:"two2"} tt.t["three"] = Thread{name:"three3"} tt.runn() //why time.Sleep(5*1e9) fmt.Println("main end") } ```
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