2 docs tagged with "impl"

We've learned how to define structs to store data. Now, let's learn how to add behavior to our structs by defining methods. Methods are functions that are associated with a specific struct and can operate on its data.

In Part 1 of this project, we wrote a program that calculates the area of a rectangle using a standalone function. This works, but we can make the code clearer and more organized. The area function is directly related to the Rectangle struct, so it should be a method of the struct.