All About Optionals In Swift — 2024 Guide | iOS
If you are an iOS developer, you should know about optionals in swift. This article explains everything you need to know about Optionals .
When I started learning swift it was difficult to understand optionals in swift. So, let’s understand what they are.
Optionals are a fundamental part of swift coding. Keeping it simple, we can say that optionals help us to separate good code from bad code and hence prevent crashes.
Different programming languages uses different preventive measures to avoid a crash. But most of them are helpless in most of the cases. Swift however is more practical in this case and optionals will help you to make your code crash free. Well that’s not 100 percent true, but however it will help you to make a much better code.
Optionals either hold no value or hold some value. Optionals allow storing
nil, a.k.a absence of value.
The Optional type is an enumeration with two cases. Optional.none is equivalent to the nil literal. Optional.some(Wrapped) stores a wrapped value.
In short, optional is an generic enum. For easy understanding, have a look at the following code:
