Lesson 15 - Enums and custom errors in Swift
In the previous lesson, Handling errors in Swift, we learned how to use methods which can
Error. There are several variants of
try-catch blocks to do this. In today's Swift tutorial, we're going
to explain enumerated types, enums, and how to define our own error states - own
It's nothing complicated. Enums represent a list of possible values of a
variable. It's useful, especially when storing an object's state which can be
one of only a few values. If we stored the individual values as
Strings, nobody could guarantee they only contain the defined
values and we could make a mistake. We can only store one of the
predefined values to an
enum type variable.
Days of the week are a typical example of
enum usage, just as
well as e.g.
...End of the preview...
ict.social is a large database made up of manuals and tutorials, whose main goal is to provide high-quality IT education to everyone. We started out in the Czech republic, where we display roughly a million articles per month and receive plenty of gratitude from our users. Thanks to our successful establishment, we are now bringing these articles to the rest of the world.
Although we are trying to keep our content free of charge, maintaining the site is a huge effort for everyone involved. Therefore, some content (exercises and more advanced material) costs network points. Don't worry, they're really cheap :)
Requested article covers this content:
In this Swift tutorial, we'll learn to use enums, the enumerated types. It'll be followed by creating and handling custom Errors.
Buying this article gives you unlimited access to it forever. You will learn some more and help us keep giving our site maintenance which helps you and others get better futures. It's a win-win.
You gain points by supporting our network. This is done by sending a helpful amount of money to support the site, or by creating content for the network.
You can get points immediately using:
|Credit card||SMS||Wire transfer|