Wonderful job, we’ve successfully created our own data type using structures and modeled dogs, books, and birds in our code!

In this lesson, we covered:

• Structures are a means of modeling real-life objects programmatically.
• How to create a structure using the struct keyword along with properties and methods.
• Structure properties are used to describe the characteristics and values of the structure.
• To model individual objects, we can create instances of structs, which may have unique property values.
• We can access and edit properties using dot notation.
• If we know that most of our instances will have a specific property value, we can assign default property values inside the struct.
• Using the init() method allows us to provide an instance with specific values for the structure’s given properties.
• Even without an init() method, structs come with a default memberwise initialization method that can assign values to declared properties inside a struct.
• Structures can have methods that are functions accessible to their instances.
• Structures are value types, any copied struct that has its properties altered will not affect the original structure from which it was copied.

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