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

Methods belong to generic functions , not the objects themselves. When you call plot(x) , R looks at the class of x and decides which plot method to run.

Managing stateful objects (like database connections, caches, or GUI widgets) and avoiding R’s usual copy-on-modify behavior. Advanced Object-Oriented Programming in R: Stat...

No formal validation; it relies on naming conventions (e.g., generic.class ). 2. S4: The Rigorous Contract Methods belong to generic functions , not the

Advanced Object-Oriented Programming in R: Strategic Selection No formal validation; it relies on naming conventions (e

R6 (via the R6 package ) provides "classical" OOP similar to Java or C++.

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

S3 is R’s original, informal OOP system. It is essentially a list with a "class" attribute.