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R Object-oriented Programming

You're reading from   R Object-oriented Programming A practical guide to help you learn and understand the programming techniques necessary to exploit the full power of R

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Product type Paperback
Published in Oct 2014
Publisher
ISBN-13 9781783986682
Length 190 pages
Edition 1st Edition
Languages
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Author (1):
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Kelly Black Kelly Black
Author Profile Icon Kelly Black
Kelly Black
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Chapter 9. S4 Classes

This chapter is the third part in our introduction to programming. We examined S3 classes in the previous chapter. We will now examine S4 classes. The approach associated with S3 classes is more flexible, and the approach associated with S4 classes is a more formal and structured definition.

This chapter is roughly divided into four parts:

  • Class definition: This section gives you an overview of how a class is defined and how the data (slots) associated with the class are specified
  • Class methods: This section gives you an overview of how methods that are associated with a class are defined
  • Inheritance: This section gives you an overview of how child classes that build on the definition of a parent class can be defined
  • Miscellaneous commands: This section explains four commands that can be used to explore a given object or class
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