wiki/articles/oop.md

Object Oriented Programming

Also known by its acronym OOP (POO in Spanish for Programación Orientada a Objectos) is a programming paradigm.

OOP is split between two "schools" of design: Simula-style OOP and Smalltalk-style OOP.

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Simula-style OOP

Most popular languages that have OOP have it in the Simula form. Some of these languages are:

• C++
• Java
• JavaScript
• Python
• ...

Smalltalk-style OOP (message passing)

In Smalltalk-style OOP, objects communicate with each other by means of message passing. This allows for greater dynamism, something that on Simula-style OOP can be archived with virtual methods.

Some languages based on or inspired by Smalltalk-style OOP are:

• Objective-C: some C-Smalltalk chimera; similar to C++ but using message passing instead of method calling.
• Common Lisp's CLOS
• Python: but more like in a conceptual way, as in making everything an object.
• ...