Comparison operators

Swift has several operators that perform comparison, and these work more or less like you would expect in mathematics.

Let’s start with a couple of example variables so we have something to work with:

let firstScore = 6
let secondScore = 4

There are two operators that check for equality: == checks two values are the same, and != (pronounced “not equals”) checks two values are not the same:

firstScore == secondScore
firstScore != secondScore

There are four operators for comparing whether one value is greater than, less than, or equal to another. These are just like in mathematics:

firstScore < secondScore
firstScore >= secondScore

Each of these also work with strings, because strings have a natural alphabetical order:

"Taylor" <= "Swift"

SPONSORED Would you describe yourself as knowledgeable, but struggling when you have to come up with your own code? Fernando Olivares has a new book containing iOS rules you can immediately apply to your coding habits to see dramatic improvements, while also teaching applied programming fundamentals seen in refactored code from published apps.

Try the book!

Sponsor Hacking with Swift and reach the world's largest Swift community!