Читать книгу Programming Kotlin Applications - Бретт Мак-Лахлин, Brett McLaughlin - Страница 37

A few specifics on terminology again. A function is a piece of code that runs. main is an example of a function. A method is, basically, a function that's attached to an object. Put another way, a method is also a piece of code, but it's not “stranded” and self-standing, like a function is. A method is defined on an object and can be run against a specific object instance.

NOTE In much of the official Kotlin documentation, there is not a clear distinction drawn between a function and a method. However, I've chosen to draw this distinction because it's important in general object-oriented programming, and if you work or have familiarity with any other object-based language, you'll run across these terms. But you should realize that in “proper” Kotlin, all methods are functions.

That last sentence is important, so you may want to read it again. It's important because it means that a method can interact with the object instance. For example, a method might want to use the object instance's property values, like, say, a first name and last name. And with that in mind, back to your code!