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iOS

Posted by Arda KARACA
Arda KARACA
1,793 Points

What is init method?

Where am I need to use init method?

3 Answers

Steve Hunter
Steve Hunter
57,712 Points

Hi Arda,

The init method can be part of a class or struct. This method is called every time a new instance of the class or struct is created.

So, within the init method you can do all the setup work for your class such as initialising variables.

I hope that helps you. If not, please just ask and I'll try to be clearer!

Cheers,

Steve.

Arda KARACA
Arda KARACA
1,793 Points
Arda KARACA
Arda KARACA
1,793 Points

Thanks Steve. I want to ask something with some code.

import UIKit

enum Status {
    case Arrived, Waiting, Sent, NotAvaliable

    init(){
        self = .NotAvaliable
    }   
}

enum Type {
    case Fragile, ColdPackage, QuickDelivery, NormalPackage

    init(){
        self = .NormalPackage
    }
}

struct cargoStatus {
    var property = Type()
    var status = Status()
    var description: String
    var recipient: String
    }

var television = cargoStatus(property: .QuickDelivery, status: .Sent, description: "LCD TV", recipient: "Somebody")

I want to make it like, if I enter Status and Property it's going to use it, if I didn't enter some Status and Property it's going to use default value. How can I do it?

Thanks Arda

Steve Hunter
Steve Hunter
57,712 Points
Steve Hunter
Steve Hunter
57,712 Points

Have a look through the swift courses for default & convenience initialisers. Those allow you to handle various levels of detail in terms of the parameters you pass in.

In essence, you declare various initialisers in, nearly, the same way with different numbers of parameters.

You set the undeclared ones within your method where it is not supplied in the code.

Google is likely to more informative than I am, to be honest.

Steve.