Hacker News with Generative AI: Object-Oriented Programming

Stop Writing If-Else Trees: Use the State Pattern Instead (medium.com)
The State design pattern is a behavioral software pattern that allows an object to alter its behavior when its internal state changes. In simpler terms, the State pattern lets an object behave differently based on its current state, without cluttering the code with endless if/else or switch statements.

Programming, Object-Oriented Programming

6 points by atomlib 2 days ago | 5 comments

Stop Writing `__init__` Methods (glyph.im)
YEARS OF DATACLASSES yet NO REAL-WORLD USE FOUND for overriding special methods just so you can have some attributes.

Python, Programming, Object-Oriented Programming, Software Development

6 points by rbanffy 3 days ago | 0 comments

UML diagram for the DDD example in Evans' book (github.com/takaakit)
This project uses UML diagrams to illustrate the structure and behavior of the DDD example—a cargo shipping system—from Eric Evans' book (Domain-Driven Design: Tackling Complexity in the Heart of Software). These diagrams are created based on the source code of the dddsample-core project on GitHub. The diagrams aim to help us understand how the example implements the strategic and tactical designs of DDD and the mechanisms by which it operates.

Domain-Driven Design, Software Development, UML, GitHub, Object-Oriented Programming

121 points by takaakit 8 days ago | 75 comments

Loglan'82: programming language for object-oriented and distributed programming (uksw.edu.pl)
Loglan'82 is a programming language conceived for object and distributed programming.

Programming Languages, Object-Oriented Programming, Distributed Computing

60 points by danielam 8 days ago | 9 comments

Using Python's .__dict__ to Work with Attributes – Real Python (realpython.com)
Python’s .__dict__ is a special attribute in classes and instances that acts as a namespace, mapping attribute names to their corresponding values. You can use .__dict__ to inspect, modify, add, or delete attributes dynamically, which makes it a versatile tool for metaprogramming and debugging.

Python, Programming, Object-Oriented Programming, Metaprogramming, Debugging

3 points by rbanffy 10 days ago | 0 comments

Method dispatch mechanisms in Swift: static and dynamic dispatch (nilcoalescing.com)
Method dispatch refers to the process of determining which method implementation to execute when a method is called. In Swift, this can be either dynamic or static, each with distinct implications for performance and flexibility.

Programming, Swift, Performance, Object-Oriented Programming, Language Design

5 points by ingve 29 days ago | 0 comments

The Gang of Four is wrong and you don't understand delegation (2012) (saturnflyer.com)
The Gang of Four got it wrong. Ruby's standard library has it wrong. Rails has it wrong.

Programming, Software Design, Ruby, Object-Oriented Programming

28 points by Tomte 31 days ago | 54 comments

How to create value objects in Ruby – the idiomatic way (ghinda.com)
When writing Ruby OOP, a typical pattern might be to create an object to group multiple values together meaningfully and sometimes also add some extra methods (computed properties, predicates, representations, …) to allow the object to respond to various situations.

Ruby, Object-Oriented Programming, Software Development

59 points by thinkingemote 36 days ago | 2 comments

How to create value objects in Ruby – the idiomatic way (ghinda.com)
When writing Ruby OOP, a typical pattern might be to create an object to group multiple values together meaningfully and sometimes also add some extra methods (computed properties, predicates, representations, …) to allow the object to respond to various situations.

Ruby, Object-Oriented Programming, Value Objects

42 points by unripe_syntax 37 days ago | 18 comments

Show HN: Object-Oriented Programming with ANSI-C (github.com/shichao-an)
Sources for "Object-Oriented Programming with ANSI-C" (rerelease 02-01-04 and 14-01-03) Copyright (c) 1993 Axel T. Schreiner, University of Osnabrueck, Germany

Programming Languages, Object-Oriented Programming, C, Open Source

3 points by swatson741 44 days ago | 0 comments

Rust Trait Object Layout (neugierig.org)
Rust makes a distinction between values and references that you generally learn to work with while using the language. This week I learned an interesting new corner around how that distinction applies to trait objects, despite using the language for quite a long time. Maybe it will surprise you too!

Rust, Programming Languages, Software Development, Object-Oriented Programming

11 points by ingve 45 days ago | 0 comments

Getter-Setter Pattern Considered Harmful (wolfgang-ziegler.com)
Many developers (like myself) who started their careers with OOP (Java, C#, ...) during the last decades will look at this code and find nothing wrong about it at first sight.

Software Development, Object-Oriented Programming, Design Patterns

42 points by gm678 69 days ago | 86 comments

Inheritance and Subtyping (frankel.ch)
Java is the first language I learned in my career. Its structure is foundational in my early years of understanding programming concepts. After going through several other languages with very different approaches, I’ve widened my point of view. Today, I want to reflect on the idea of inheritance.

Programming, Java, Object-Oriented Programming

43 points by saikatsg 87 days ago | 49 comments

Better Know a Ruby Thing: Singleton Classes (noelrappin.com)
It is time to Better Know what is perhaps the Ruby-iest of Ruby things, a feature that didn’t even have an official name for several years, despite being critical to Ruby’s Object-Oriented semantics. (It only just now occurs to me that there was no official name in English, I wonder what the Japanese name for it was…).

Ruby, Programming Languages, Object-Oriented Programming

130 points by mooreds 89 days ago | 25 comments

Enigma Cipher Machine: An Object Oriented Python Implementation (christopherchmielewski.xyz)
This program is an objected oriented implementation of the Enigma cipher machine written in Python.

Cryptography, Python, Object-Oriented Programming

13 points by horeszko 92 days ago | 0 comments

Open Dylan (opendylan.org)
Dylan is an object-functional language originally created by Apple for the Newton.

Programming Languages, Object-Oriented Programming, Functional Programming

60 points by ofrzeta 97 days ago | 24 comments

Pharo (pharo.org)
Pharo is a pure object-oriented programming language and a powerful environment, focused on simplicity and immediate feedback (think IDE and OS rolled into one).

Object-Oriented Programming, Programming Languages, Software Development, IDEs

51 points by TheFreim 104 days ago | 11 comments

Thinking in Actors – Part 3 – Using the Actor Model to Track Aircraft (jeremycarterau.substack.com)
Previously we outlined the three pillars of the virtual actor: Ownership, Lifecycle and Transaction. I also briefly introduced a few techniques we can use to help us model our actors. Now, we will put it all together and model a system that allows us to track aircraft in real-time.

Software Development, Object-Oriented Programming, Real-Time Systems, Aviation

8 points by thunderbong 114 days ago | 1 comments

Issues with object-oriented programming in Guile (2022) (dthompson.us)
Scheme is often thought of as a functional programming language, but really it is a multi-paradigm language, including object-oriented programming.

Programming Languages, Scheme, Object-Oriented Programming

59 points by BoingBoomTschak 119 days ago | 4 comments

Implementing a simple object system from scratch in Ruby (metacircu1ar.github.io)
“What I cannot create, I do not understand.” – Richard Feynman

Ruby, Object-Oriented Programming, Programming Languages, Software Development, Computer Science

23 points by metacircu1ar 133 days ago | 9 comments

Exploring PHP Lazy Objects: A Practical Implementation (dailyrefactor.com)
One of the new features in PHP 8.4 is Lazy Objects, which are part of the PHP OOP model.

PHP, Programming, Object-Oriented Programming, New Features

14 points by esher 145 days ago | 1 comments

A C++ Mixin System (jennyjams.net)
I've had this idea in the back of my head for a while of pervasively using mixins to add code and logic for more high level concepts, although this gets somewhat close to Rust style traits (and C++ concepts). This has existed in the back of my head for a long time as a way to model a framework or standard library implementaiton while also providing it for user types.

C++, Object-Oriented Programming, Design Patterns, Software Design

74 points by luu 158 days ago | 40 comments

99 Bottles of OOP now available in Python (sandimetz.com)
99 Bottles of OOP is a practical guide to writing cost-effective, maintainable, and pleasing object-oriented code.

Python, Object-Oriented Programming, Programming Books

254 points by mattcollins 162 days ago | 86 comments

OOP is not that bad (osa1.net)
OOP is certainly not my favorite paradigm, but I think mainstream statically-typed OOP does a few things right that are very important for programming with many people, over long periods of time.

Object-Oriented Programming, Programming Paradigms, Software Engineering

143 points by thunderbong 187 days ago | 288 comments

Beyond Procedure Calls as Component Glue: Connectors Deserve Metaclass Status (dl.acm.org)
We present the architecture-oriented programming language Objective-S, which goes beyond procedure calls for expressing inter-component connectors (so-called glue code) in order to directly express a wide range of architectural patterns directly in the implementation.

Software Engineering, Programming Languages, Architecture, Object-Oriented Programming

36 points by mpweiher 190 days ago | 23 comments

Medley Loops: The Basic System (Lisp Object-Oriented Programming System) [pdf] (interlisp.org)

Programming Languages, Lisp, Object-Oriented Programming

96 points by pamoroso 192 days ago | 28 comments

Alan Kay 80s 2h 40M OOP Talk Remastered [video] (youtube.com)

Object-Oriented Programming, Computer Science, History, Video, Alan Kay

11 points by TZubiri 201 days ago | 0 comments

Benchmarking the CLOS (djhaskin.com)

Programming, Benchmarking, Object-Oriented Programming, Lisp

10 points by djha-skin 220 days ago | 1 comments

Python Data Model (python.org)
Objects are Python’s abstraction for data. All data in a Python program is represented by objects or by relations between objects. (In a sense, and in conformance to Von Neumann’s model of a “stored program computer”, code is also represented by objects.)