您可以使用如下:
struct MyAppUser: User {
// default init coming from protocol
init() {
self.firstname = ""
self.lastname = ""
}
// you can use below init if you want
init(firstName: String, lastName: String) {
self.firstname = firstName
self.lastname = lastName
}
// coming from protocol
var firstname: String
var lastname: String
}
// user 1
var user1 = MyAppUser()
user1.firstname = "Ashis"
user1.lastname = "laha"
print(user1)
// user 2
let user2 = MyAppUser(firstName: "Kunal", lastName: "Pradhan")
print(user2)
输出:
MyAppUser(firstname: "Ashis", lastname: "laha")
MyAppUser(firstname: "Kunal", lastname: "Pradhan")