Data types – where it all starts

Swift offers a collection of built-in data types. Data types are known as string, integer, floating-point numbers, and Booleans. These data types can be found in most programming languages. Therefore, if you are not new to programming, you can skip this section and start at the variables and constants section here.

Let's walk through each data type for those of you who are new to programming or would like a refresher.

String

The first data type we will discuss is a string. A string is represented by a series of characters. strings are used to display text in an app. When a string is wrapped in quotes, it is known as a string literal. In programming, we cannot just add text into Playgrounds. So, in order to write a string, we must wrap our string inside of quotes. Let's now add our name into Playgrounds wrapped in quotes:

In Playgrounds, your values also will appear inside of your Results panel. So, we now know that, in order to create a String, we need to use...