Golang的func参数及返回值操作_Golang_

 func main() { demo.Params(10, 20, "golang", true) } func Params(id int, params ...interface{}) (error, error) { fmt.Println(id) fmt.Println(params[0]) fmt.Println(params[1]) fmt.Println(params[2]) for key, val := range params { fmt.Println("key", key) fmt.Println("val", val, reflect.TypeOf(val)) } return nil, errors.New("error") } 

 package main import ( "errors" "fmt" ) type item struct { Name string } func (i item) String() string { return fmt.Sprintf("item name:%v", i.Name) } type person struct { Name string Sex string } func (p person) String() string { return fmt.Sprintf("person name:%v sex:%v", p.Name, p.Sex) } func Parse(i interface{}) interface{} { switch i.(type) { case string: return &item{ Name: i.(string), } case []string: data := i.([]string) length := len(data) if length == 2 { return &person{ Name: data[0], Sex: data[1], } } else { return nil } default: panic(errors.New("Type match miss")) } return nil } func main() { p1 := Parse("apple").(*item) fmt.Println(p1) p2 := Parse([]string{"zhanghan", "man"}).(*person) fmt.Println(p2) fmt.Println(p1.Name) fmt.Println(p2.Name) fmt.Println(p2.Sex) }