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.
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