Return from initializer without initializing all stored properties

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I have a simple class like this.

public class User {
    let id: Int
    let firstName: String
    let lastName: String
    let email: String?

    init(id:          


        
5条回答
  •  北荒
    北荒 (楼主)
    2020-12-05 13:28

    Change the email from "let" to "var" as below.

    public class User {
        let id: Int
        let firstName: String
        let lastName: String
        var email: String?
    
        init(id: Int, firstName: String, lastName: String) {
            self.id = id
            self.firstName = firstName
            self.lastName = lastName
    
        }
    }
    

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