How were we suppose to come to this conclusion with the information we've been given?

Hello Benjamin:

I am sorry you feel that way, it can get overwhelming when you are learning a new language, specially a coding language. I went back to the challenge and the videos prior to the challenge, and I do find the information that teaches you how to declare a class and what is a "variable property".

Learning a language, means you have to learn a few things other than just writing code. Terminology is very important, perhaps one of the most important.

I will break down the challenge for you, and you will see that it is not as difficult.

Challenge

• Let's get in some practice creating a class. Declare a class named Shape with a variable property named numberOfSides of type Int.

The first step is telling us that we have to declare a class that has a name of "Shape", with a variable that has a name "numberOfSides" of the type Int.

// Let's declare that class

class Shape {
// Lets add that variable

var numberOfSide: Int

}

• Remember that with classes you are required to write an initializer method.

Then it reminds us that classes need an initializer. Remember structs generate their own initializer, which are called memberwise initializer. On the other hand, classes requires you to create an initializer for it.

class Shape {
var numberOfSide: Int

// Lets create the initializer

init(numberOfSides: Int){
       self.numberOfSides = numberOfSides
     }
}

• Once you have a class definition, create an instance and assign it to a constant named someShape.

Now that we have a class declared, they want us to create an instance of this class, and then assign it to a constant named "someShape"

class Shape {
var numberOfSide: Int

init(numberOfSides: Int){
       self.numberOfSides = numberOfSides
     }
}

// Here we will create that instance and assign it to the constant.

let someShape = Shape(4)

/*
You may ask, why in the answer I found it has 
Shape(sides:4) and you have Shape(4), and that's because 
I did not give the parameters it's external parameter name. On your
example it has the external parameter name, and the local parameter name.
*/

I am sure that when you look at it this way, you will realize that it was not as difficult and that somewhere in those videos you did see this information given to you. But it will not hurt if you go back to re-watch some of the videos. I am not sure how far you are along with this course, or if you started from "Swift 2.0 basics" and continued the courses by levels. If you have not done that, then I recommend you do so.

If you have any other questions, or do not understand my answer, please let me know..

Good luck