Swift Switch Statement
Learn how to use the Swift switch statement as a cleaner alternative to complicated "if.. else if... "statements. Even if you have used switch statements in other languages, you should be aware of some differences in the Swift implementation.
In the previous lesson, we looked at how to control program execution flow using the if and else statements. While these statement constructs work well for testing a limited number of conditions, they quickly become unwieldy when dealing with larger numbers of possible conditions. To simplify such situations, Swift has inherited the switch statement from the C programming language.
In this lesson, we will explore the Swift implementation of the switch statement in detail.
Note: Those familiar with the
switchstatement from other programming languages should be aware that the Swiftswitchstatement has some key differences from other implementations.
Why use a switch statement?
For a small number of logical evaluations of a value, the if ... else if ... construct is perfectly adequate. Unfortunately, any more than two or three possible scenarios can quickly make such a construct both time-consuming to write and difficult to read. For such situations, the switch ...