In this chapter, we look at R’s flavor of object-oriented programming. Actually, R has three different systems for object-oriented programming: S3, S4, and RC. We will only look at S3, which is the simplest and (as far as I know) the most widely used.
Immutable Objects and Polymorphic Functions
Object orientation in S3 is quite different from what you might have seen in Java or Python or that class of languages. Naturally so, since data in R is immutable and the underlying model in OO in languages such as Java and Python is that you have objects with states that you can call methods ...
