The most basic way that we can group together data and functionality into a logical unit or object is to define something called a structure. Essentially, a structure is a named collection of data and functions. Actually, we have already seen several different structures because all of the types such as string, array, and dictionary that we have seen so far are structures. Now we will learn how to create our own.
Let's jump straight into defining our first structure to represent a contact:
struct Contact {
var firstName: String = "First"
var lastName: String = "Last"
}Here we have created a structure by using the struct keyword followed by a name and curly brackets ({}) with code inside them. Just like with a function, everything about a structure is defined inside its curly brackets. However, code in a structure is not run directly, it is all part of defining what the structure is. Think of a structure as a specification for future behavior instead of...