note.md

Put Alias aside for subtyping

Create Error msg for the if branches

Module name with a minuscule caps

Operation order manager with ".", "+", etc.

Make an interface behave more like a Generic

if (Addable, Addable) -> Addable is an interface then (int, int) -> int should be allowed if i implement add

Factor implementation

By default, function like read.csv() and data.frame() automaticaly convert character vectors to factors. Automatically add stringAsFactors = FALSE in the parameters.

Set by default a: options(warnPartialMatchDollar = TRUE)

Use x[[i]] <- NULL to remove the field i of the list x

For loops

An inside variable can rewritte a global variable

On exit

Use on.exit([parameter], add = TRUE) to clean up the environment

Encapsulated OOP VS functional OOP

Check R.oo package for a mutable S3

About S3

Simple OO System Offer freedom and extensibility TypR automatically add and manage constrains in a less restrictive manner Can't explicitelly change a object's class

• Find a way to implement those elements:

  • Constructor DONE
  • Validator
  • Helper

• Safe convention for inheritance and subtyping: structural typing