Created
March 23, 2018 02:48
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| import Foundation | |
| protocol User { | |
| var firstName: String { get } | |
| var lastName: String { get } | |
| func fullName() -> String | |
| } | |
| class CurrentUser: User { | |
| let firstName: String | |
| let lastName: String | |
| init(firstName: String, lastName: String) { | |
| self.firstName = firstName | |
| self.lastName = lastName | |
| } | |
| func fullName() -> String { | |
| return "\(firstName) \(lastName)" | |
| } | |
| } | |
| class GuestUser: User { | |
| var firstName = "Guest" | |
| var lastName = "User" | |
| func fullName() -> String { | |
| return "\(firstName) \(lastName)" | |
| } | |
| } | |
| class YourViewControllerOrSomeOtherPlace { | |
| private let user: User | |
| init(user: User) { | |
| self.user = user | |
| } | |
| func viewDidLoadOrSomeOtherMethod() { | |
| print("rendering UI for the user since we clearly have one, either current or guest") | |
| print("user's full name is: \(user.fullName())") | |
| } | |
| } | |
| let currentUser = CurrentUser(firstName: "Joe", lastName: "Dow") | |
| let aVCWithAUser = YourViewControllerOrSomeOtherPlace(user: currentUser) | |
| aVCWithAUser.viewDidLoadOrSomeOtherMethod() | |
| print("=================") | |
| let guestUser = GuestUser() | |
| let aVCWithGuestUser = YourViewControllerOrSomeOtherPlace(user: guestUser) | |
| aVCWithGuestUser.viewDidLoadOrSomeOtherMethod() |
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