Hiding Complexity with Encapsulation

Object-Oriented Programming with S3 and R6 in R

Richie Cotton

Data Evangelist at DataCamp

Encapsulation

|

implementation | user interface

|

microwave_oven_factory <- R6Class(
  "MicrowaveOven",
  private = list(
    power_rating_watts = 800,

    door_is_open = FALSE

  ),

  public = list(

    open_door = function() {

      private$door_is_open <- TRUE

    }

  )

)

private$ accesses private elements

self$ accesses public elements

Summary

Encapsulation = separating implementation from UI
Store data in private list
Store methods in public list
Use private$ to access private elements
... and self$ to access public elements

Let's practice!

Object-Oriented Programming with S3 and R6 in R