Operators and conditions summary

You’ve made it to the end of the third part of this series, so let’s summarize:

1. Swift has operators for doing arithmetic and for comparison; they mostly work like you already know.
2. There are compound variants of arithmetic operators that modify their variables in place: +=, -=, and so on.
3. You can use if, else, and else if to run code based on the result of a condition.
4. Swift has a ternary operator that combines a check with true and false code blocks. Although you might see it in other code, I wouldn’t recommend using it yourself.
5. If you have multiple conditions using the same value, it’s often clearer to use switch instead.
6. You can make ranges using ..< and ... depending on whether the last number should be excluded or included.

SAVE 50% To celebrate WWDC23, all our books and bundles are half price, so you can take your Swift knowledge further without spending big! Get the Swift Power Pack to build your iOS career faster, get the Swift Platform Pack to builds apps for macOS, watchOS, and beyond, or get the Swift Plus Pack to learn advanced design patterns, testing skills, and more.

Save 50% on all our books and bundles!