KVO vs Notification Center

One-to-Many or One-to-One

Photo by Frederick Marschall on Unsplash

I’ve previously covered the Observer Pattern in Swift, but there seems to be two implementations in the iOS SDK -

• NotificationCenter
• KVO

So which is what, and what is in the now can we?

Read on to find better English. Or watch the following video:

Prerequisites

You will be expected to be aware how to make a Single View Application in Swift, or be able to code in Swift Playgrounds.

Terminology

NotificationCenter: A notification dispatch mechanism that enables the broadcast of information to registered observers

Dynamic property: An interface for a stored variable that updates an external property of a view

NotificationCenter

Notification Center enables the broadcast of information to any registered observers. This means that a single event can broadcast to many observers — a one-to-many…