Advanced Object-oriented Programming In R: Stat... Apr 2026

90% of R tasks, especially providing print() , summary() , or plot() methods for new data types. Pros: Minimal boilerplate; easy to learn; highly flexible.

S4 is a more formal version of S3, requiring explicit class definitions with "slots" and typed data. Advanced Object-Oriented Programming in R: Stat...

S3 is R’s original, informal OOP system. It is essentially a list with a "class" attribute. 90% of R tasks, especially providing print() ,

Managing stateful objects (like database connections, caches, or GUI widgets) and avoiding R’s usual copy-on-modify behavior. 90% of R tasks

No formal validation; it relies on naming conventions (e.g., generic.class ). 2. S4: The Rigorous Contract