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Wrapper around specialized datatype with SwiftUI Identifiable will work
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| //: [Previous](@previous) | |
| import SwiftUI | |
| import PlaygroundSupport | |
| protocol Nameable { | |
| var name: String { get } | |
| } | |
| struct Name: Nameable { | |
| var name: String | |
| public init(_ value: String) { | |
| self.name = value | |
| } | |
| /// Imagine cool Name Stuff here that is unique to this type | |
| /// But also notice how it is the same as Surname | |
| } | |
| struct Surname: Nameable { | |
| var name: String | |
| public init(_ value: String) { | |
| self.name = value | |
| } | |
| /// Imagine cool Surname Stuff here that is unique to this type | |
| /// But also notice how it is the same as Name | |
| } | |
| /// Wrapper around the specialized name types above | |
| /// We know how this type will be used so now it conforms to Identifiable | |
| /// instead of the models above | |
| struct NameHolder: Nameable, Identifiable { | |
| var id: UUID | |
| var name: String | |
| init<U>(nameable name: U) where U: Nameable { | |
| self.name = name.name | |
| self.id = UUID() | |
| } | |
| } | |
| let names: [NameHolder] = [ | |
| NameHolder(nameable: Name("Alice")), | |
| NameHolder(nameable: Name("Bob")), | |
| NameHolder(nameable: Surname("Clark")), | |
| NameHolder(nameable: Surname("Davis")), | |
| NameHolder(nameable: Name("Elanore")), | |
| NameHolder(nameable: Name("Frank")), | |
| NameHolder(nameable: Surname("Gonzalez")), | |
| NameHolder(nameable: Surname("Harris")), | |
| NameHolder(nameable: Surname("Harris")), //Can Duplicate | |
| NameHolder(nameable: Name("Harris")), // Can go across types | |
| ] | |
| struct SimpleIdentifiableList : View { | |
| var body: some View { | |
| List(names) { name in | |
| Text(name.name) | |
| } | |
| } | |
| } | |
| let viewController = UIHostingController(rootView: SimpleIdentifiableList()) | |
| PlaygroundPage.current.liveView = viewController | |
| //: [Next](@next) |
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