object-oriented design

Robert C. Martin (Uncle Bob) gives a talk on the SOLID principles of object-oriented and agile design, in the context of encapsulation and clean code.

Mike Acton of Insomniac Games argues that a program's purpose is transforming data, and shows how common C++ approaches work against that in performance-critical game development. He covers cache behavior, data layout and the limits of compilers.

Mark Bastian contrasts top-down object-oriented design with bottom-up, data-oriented design in Clojure. He models a board game as plain data plus small composable functions and compares it with a roughly 22-class OOP version.

Andrew Kelley, creator of Zig, presents practical data-oriented design techniques for shrinking memory footprint and making programs cache friendly. He ends with a case study of how these ideas sped up the Zig compiler.

A CppCon 2018 talk arguing that OOP has failed to deliver on reuse and performance, and presenting data-oriented design for C++ with practical worked examples from real systems.

Sandi Metz takes an ugly section of conditional code and refactors it into a few simple objects, bridging object-oriented theory and practice. The talk includes her take on the Gilded Rose refactoring kata and the idea that duplication is cheaper than the wrong abstraction.

Sandi Metz argues that hidden assumptions in code are missing concepts, and shows how to name and expose them so code is easier to understand and change. It covers null objects and messages in Ruby.

Alan Kay's 1997 OOPSLA keynote, preserved on YouTube after being lost from Google Video. He discusses what object orientation was meant to be, messaging, system design, and the state of computing practice.

Joshua Bloch's Google Tech Talk on how to design good APIs and why it matters, with concrete principles and examples. It treats every programmer as an occasional API designer.

Stuart Halloway's satirical talk describes how to protect yourself from industry change by spreading complexity through systems while following idiomatic practice. It uses this inversion to catalog software design anti-patterns.

Alex Martelli's Google Developers Day talk on classic design patterns (creational, structural and behavioral) and how they appear in Python. He stresses that patterns must be studied in the context of the implementing language.

Raph Levien presents his new Rust GUI framework, built on data-oriented design and ideas from entity component systems, for the Xi editor. He weighs the approach against alternatives and discusses pros and cons.

Erik Meijer argues that category theory is the mathematicians' version of interface-based design. He shows that Java 8 lambdas and method references form a Cartesian closed category.

Jonathan Blow talks at Gamelab 2018 about the design decisions behind Jai, the programming language he is building for game programmers. He covers low-friction development, quality of life and the effects of compile times.

Chandler Carruth's CppNow 2023 talk on modernizing compiler design for the Carbon toolchain, using data-oriented design and modern hardware assumptions. It covers lexing, parsing and compact data structures aimed at compiler performance.

John Ousterhout, Stanford professor and creator of Tcl, presents the ideas of his book A Philosophy of Software Design in a Talks at Google session. He covers managing complexity, deep modules and interfaces, and what he teaches in his Stanford software design course.

Rich Hickey's 2013 talk applies language-design thinking to whole systems, covering names, queues, data, failure, and the interfaces between programs. It ends with a call to action for building systems holistically.

Casey Muratori's two-hour talk tracing the history of object-oriented programming back to the 1960s and examining how its ideas, and later entity component systems, came about. It is followed by a Q&A.

Misko Hevery's Clean Code Talk shows how to use object-oriented techniques such as polymorphism to remove repeated if and switch statements. The result is code that is easier to test, understand and maintain.

Robert C. Martin (Uncle Bob) talks about clean architecture and design, including keeping the database and frameworks out of the center of an application. It is an hour-long conference talk.

James Gosling gives a personal talk at the 50th anniversary seminar of Simula about using the language from 1974 and how it shaped his thinking. He explains how Simula's object model and coroutines influenced the design of Java.

Evan Czaplicki, creator of Elm, talks at Curry On 2015 about user-focused language design. He explains the principles behind Elm and how to make a functional, typed language as approachable as JavaScript.

The 1969 pitch film in which Saul Bass presents the Bell System logo redesign to AT&T, part of the largest corporate re-identity program in U.S. history.

TEDxStanford talk by Bill Burnett, executive director of Stanford's design program, on applying design thinking to your own life and career. He offers five practical tips such as getting curious, talking to people and trying things.

Roman Mars gives a funny TED talk on vexillology, laying out five basic principles of good flag design and why many city flags fail them.

A 2001 panel with Paul Graham, John Maeda, Jonathan Rees and Guy Steele on programming language design, part of the Dynamic Languages Wizards Series.

Christian Schafmeister presents CANDO at the 2016 European Lisp Symposium. It is a compiled Lisp-based language for designing macromolecules and nanoscale materials, built on the Clasp implementation of Common Lisp.

Blizzard's Timothy Ford explains in this 2017 GDC session how Overwatch uses an Entity Component System architecture for layered gameplay. He also covers its server-authoritative netcode with client-side prediction and how they keep the game responsive and fair.

Jack Diederich's PyCon 2012 talk argues that classes are overused in Python and walks through real code, refactoring away unnecessary classes, exceptions and modules. It popularized the heuristic that a class with two methods, one being __init__, should be a function.

Sandi Metz's RailsConf 2013 talk offers practical guidelines for deciding what to test and how, so tests stay cheap and stable. She argues for testing the public interface rather than implementation and using mocks appropriately.

Luca Sas's ACCU 2021 talk on Modern C, a style of C and C-like C++ aligned with data-oriented design. It covers centralized memory management, zero-is-initialization, error handling and API design.

Rich Hickey's Clojure Conj 2023 talk on design in practice, covering problem statements, decision matrices, choosing precise words and making decisions in a team.

Paul Phillips, a Typesafe co-founder and prolific Scala committer, explains why he walked away from Scala. He critiques the Scala collections library and presents his own design focused on immutability, performance and correctness.

Christian Schafmeister's Google Tech Talk on Clasp and CANDO, a Common Lisp implementation on LLVM and C++ used to design molecules, including energy minimization and force-field calculations.

Rich Hickey's philosophical talk from the first Clojure Conj in 2010. He argues that good design comes from deliberate, away-from-keyboard thinking, and describes how to feed the background mind so it solves problems.

Rich Hickey's talk at Clojure's tenth anniversary on the kind of programs Clojure is designed for. He argues for situated programs that deal with changing requirements, and for dynamic typing and data over static types.

Rich Hickey's Strange Loop 2011 keynote separates 'simple' (not intertwined) from 'easy' (familiar or near at hand) and argues that software complexity comes from complecting things. It offers a vocabulary for judging designs and abstractions.

A five-minute excerpt of Rich Hickey's Clojure Made Simple talk, with new slides, ranting about HttpServletRequest and specificity. He argues for using generic maps instead of many specific classes and getters.

Stuart Halloway argues that simplicity is objective, with a definition and etymology useful to programmers, rather than a subjective buzzword. He shows how this view informs Clojure's design and how to make programs simpler.

Runar Bjarnason's Scala World talk argues that restraint and precision in components beat power and flexibility. Constraints on parts make them easier to compose into systems.