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iOS Swift 2.0 Protocols Swift 2.0 Protocols Conforming to a Protocol

Posted by Billy Potts
Billy Potts
Courses Plus Student 2,344 Points

how do i make this struct conform to the protocol im getting an error

In the editor the protocol you created, UserType, is provided along with an empty struct. For this task, Person needs to conform to UserType. After you've written code to achieve this task, create an instance of Person and assign it to a constant named somePerson.

protocols.swift 
protocol UserType {
  var name: String { get }
  var age: Int { get set }
}

struct Person: UserType {
      var name: String
      var age: String
init(name: String, age: Int) {
    self.name = name
    self.age = age
  }
}

let somePerson = Person(name: "Billy", age: 22)

4 Answers

Jonathan Fernandez
Jonathan Fernandez
4,047 Points
Jonathan Fernandez
Jonathan Fernandez
4,047 Points

Why in the above examples, we dont use get constructs or set constructs for age and a get construct for name? Is it because in the protocol when the property is said to "{ get set }" that essentially means it has to be able to be read and has to be able to be changed, which can be done through a declaration in the syntax of a stored property?

Helgi Helgason
Helgi Helgason
7,599 Points
Helgi Helgason
Helgi Helgason
7,599 Points

the age variable is of type String in your struct but Int in the protocol

Mohammed Alkandari
Mohammed Alkandari
3,054 Points
Mohammed Alkandari
Mohammed Alkandari
3,054 Points

The (age) in protocol is Int but it's a String in the struct, also you don't need an init method in your struct. Xcode provides you automatically with it without the need to code it!

protocol UserType {
  var name: String { get }
  var age: Int { get set }
}

struct Person: UserType {
      var name: String
      var age: Int

}

let somePerson = Person(name: "Billy", age: 22)

hope it helps :)

i6ze5srftzgi8o5iu46z5etr
i6ze5srftzgi8o5iu46z5etr
6,931 Points
i6ze5srftzgi8o5iu46z5etr
i6ze5srftzgi8o5iu46z5etr
6,931 Points 
protocol User{
  var name: String { get }
  var age: Int { get set }
}

struct Person: User{
      var name: String
      var age: Int

}

let somePerson = Person(name: "xxxx", age: 22)