9.2. Classes

At first glance, a class looks the same as a struct. However, there are a few major differences between them.

We will discuss classes using the differences they have.

An example of a class is as follows:

class Vehicle{
    var type:String
}

If you just write the above block of code, you'll get an error:

So, it is not like a struct where you do not need to have an initializer method. You must have your own initializer to be able to create an instance of a class. This is the first difference between a** struct and a class.**

Now let's define our init() method and create a variable:

class Vehicle{
    var type:String
    
    //mandatory init() method
    init(type:String){
        self.type = type
    }
    
}

var car1 = Vehicle(type: "Car")
var car2 = Vehicle(type: "Truck")
var car3 = Vehicle(type: "Minivan")
print(car1.type) //prints: Car