Learn what object-oriented programming (OOP) consists of, when to use it, and what OOP systems are available in R.  You'll also learn how R identifies different types of variable, using classes, types, and modes.

What is Object-Oriented Programming?

Should I OOP?

You've Already Been Working With Objects

The Nine Systems

Which Systems Should I Use?

How does R Distinguish Variables?

What's my type?

Assigning Classes

Make it Classy (1)

Make it Classy (2)

Introduction to Object-Oriented Programming

S3 is a very simple object-oriented system that lets you define different behavior for functions, depending upon their input argument. This chapter explains how to use S3, and how generics and methods work.

Generics and Methods or Function Overload

What's in a Name?

Creating a Generic Function

Creating an S3 Method (1)

Creating an S3 method (2)

Methodical Thinking

Finding Available Methods (1)

Finding Available Methods (2)

Method Lookup for Primitive Generics

Primitive Generic Functions

Who is Calling?

Too Much Class

Very Classy

Writing the Next Method

Using S3

Learn how to define R6 classes, and to create R6 objects.  You'll also learn about the structure of R6 classes, and how to separate the user interface from the implementation details.

The Object Factory

Specifying the Microwave Oven Class

Making Microwave Ovens

Hiding Complexity with Encapsulation

Learning to Cook

Close the Door

First Thing's First

Getting and Setting with Active Bindings

Read the Rating

Control the Power

Using R6

Learn how to inherit from an R6 class, and how the relationship between parent and child classes works.

Propagating Functionality with Inheritance

Specifying a Fancy Microwave Oven

Who's the Daddy?

Making a Fancy Microwave Oven

Embrace, Extend, Override

Extending the Cooking Capabilities

Overriding the Cooking Capabilities

Multiple Levels of Inheritance

Exposing your Parent

Over-Overriding the Cooking Capabilities

Remembering Your Origins

R6 Inheritance

Complete your mastery of R6 by learning about advanced topics such as copying by reference, shared fields, cloning objects, and finalizing objects.

Environments, Reference Behavior, & Shared Fields

Working with Environments (1)

Working with Environments (2)

Static Electricity

Cloning R6 Objects

Attack of the Clones (1)

Attack of the Clones (2)

Shut it Down

The Final Countdown

This is the End (of an R6 Object)

Advanced R6 Usage

Cooking times (SQLite file)

Object-oriented programming (OOP) lets you specify relationships between functions and the objects that they can act on, helping you manage complexity in your code. This is an intermediate level course, providing an introduction to OOP, using the S3 and R6 systems. S3 is a great day-to-day R programming tool that simplifies some of the functions that you write. R6 is especially useful for industry-specific analyses, working with web APIs, and building GUIs.

Introduction to Writing Functions in R

Manage the complexity in your code using object-oriented programming with the S3 and R6 systems.

Object-Oriented Programming with S3 and R6 in R

R Developer

R Programming Fundamentals

Who is Calling?

Object-Oriented Programming with S3 and R6 in R

Hands-on interactive exercise