init and class

Question

I don't think i understood the init method right could someone give me explanation of what it does and why we need to use them. I watched the video a couple of times but i dont seem to understand it.
thank you
```objects.swift
// Enter your code below
class Shape {
var numberOfSides: Int
init() {
self.numberOfSides = numberOfSides
}
}
let someShape = numberOfSides
```

Brandon Mahoney · Answer

So init is used to initialize the object i.e. assign it, its initial value. Below are two answers that are both accepted by the challenge. The first assigns a pre determined number of sides and the second uses a parameter in the init method which will be assigned later.
1 -
```Swift
class Shape {
  var numberOfSides: Int
  init() {
    self.numberOfSides = 4
  }
}
let someShape = Shape()
```
2 -
```Swift
class Shape {
  var numberOfSides: Int
  init(numberOfSides: Int) {
    self.numberOfSides = numberOfSides
  }
}
let someShape = Shape(numberOfSides: 4)
```

Welcome to the Treehouse Community

Looking to learn something new?

aren polat

aren polat

init and class

1 Answer

Brandon Mahoney

Brandon Mahoney