Functions Vs. Methods

Hi, methods are just functions inside of an object

If you look at this example, this struct object is for counting.

struct Counter {
        var count = 0

        func incrementByOne() {
            count += 1
        }
        func increment(by amount: Int) {
            count += amount
        }
        func reset() {
            count = 0
        }
}

If we then assign the object to a constant

let viewCount = Counter()

We then can access , update and store properties form this object.

viewCount.count // This would display 0
viewCount.incrementByOne()
viewCount.count // This would display 1

The greatest thing about using methods and objects is that the object can be used in many different cases. We can assign this object to a new constant and update the values of count without affecting the others instances of that object

let subscribers = Counter()
viewCount.count // This would display 1 because we haven't updated the variable *count*
subscribers.count // This would display 0
subscribers.increment( amount: 10) 
subscribers.count // This would display 10

In the example above us we can create a new instance of the object without changing the other instances. We can not get this functionality from using just functions.

Sorry for this being so long. Hope this helps I would play about in Xcode playground and do further tests.

Thanks