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[[!meta title="Old McCarthy Had a Form"]]
[[!meta copyright="Copyright © 2021 Ian Eure"]]
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# Old McCarthy Had a Form
Ian Eure
Name Pronunciation: (EE-un YOU-r)
Pronouns: he/him/his
Preferred contact info: ian@retrospec.tv / ieure on Libera
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Most practical languages are multi-paradigm, offering several
abstractions for the programmer. But did you know that Emacs Lisp
comes with a powerful system for object-oriented programming? Join me
for a discussion of EIEIO, and learn how it can help you write more
modular, flexible Emacs Lisp.
# Outline
- What is EIEIO?
- Why OOP?
- The CLOS Model
- Classes
- Generic Functions
- Methods
- Specialization
- Method Qualifiers
- Multiple Inheritance
- Nice Properties
- Practical Examples
- Encapsulation
- Example: `transmission.el`
- Abstraction
- Example: `sql.el`
- Extensibility
- Example: comint
- Conclusion
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