Arithmetic operations

When you take one or more pieces of data and turn them into another piece of data, this is known as an operation.

The simplest way to understand operations is to think about arithmetic. The addition operation takes two numbers and converts them into the sum of the two numbers. The subtraction operation takes two numbers and converts them into the difference of the two numbers.

You’ll find simple arithmetic all over your apps; from tallying the number of “likes” on a post, to calculating the correct size and position of a button or a window, numbers are indeed everywhere!

In this section, you’ll learn about the various arithmetic operations that Swift has to offer by considering how they apply to numbers. In later chapters, you see operations for types other than numbers.