The Object Factory

Object-Oriented Programming with S3 and R6 in R

Richie Cotton

Data Evangelist at DataCamp

 

 

 

class generators are templates for objects

 

 

class generators are templates for objects a.k.a. factories

 

 

 

library(R6)
thing_factory <- R6Class(
  "Thing",

  private = list(
    a_field = "a value",
    another_field = 123
  )

)

Coming soon ...

 

 

     public

     active

 

a_thing <- thing_factory$new()

another_thing <- thing_factory$new() 

yet_another_thing <- thing_factory$new()

Summary

• Load the R6 package to work with R6!
• Define class generators with R6Class()
• Class names should be UpperCamelCase
• Data fields stored in private list
• Create objects with factory's new() method

Let's practice!

Object-Oriented Programming with S3 and R6 in R