type-driven development

The Michigan TypeScript group shows the Doom engine running entirely inside the TypeScript type system. It is open source, and two follow-up videos cover why and how they did it.

A Ben Heck Show episode tearing down the Nintendo PlayStation prototype, one of the rarest consoles ever, with its owners Terry and Dan Diebold. Part 2 then gets it working again.

CuriousMarc connects a restored 1930 Model 15 Teletype to a Linux machine and uses it as a terminal, after commenters requested it. The video shows the challenges of linking a 5-bit mechanical device to a modern OS.

Ruby developer Avdi Grimm gives a seven-minute tour of Pharo Smalltalk's development environment, focusing on tools like search-by-example and the integrated, live coding experience.

Tom Wildenhain's SIGBOVIK 2018 presentation of WordTeX, a Microsoft Word template that mimics LaTeX typesetting output. It is a joke research project executed with serious effort.

A short demo of Code Bubbles, an IDE interface built around editable code fragments in bubbles instead of files. It was a research prototype for Java development.

A demonstration of loading Altair 4K BASIC on an Altair 8800 clone, using a front-panel bootloader and an ASR-33 Teletype. It shows the full sequence of entering boot code, loading BASIC and running a program.

Tested gets hands-on with four Meta Reality Labs research VR headset prototypes testing resolution, brightness, focus shifting and form factor, plus an interview with Mark Zuckerberg on display technology.

A one-minute Tesla clip showing a prototype robotic snake charger that finds a Model S's charge port and plugs itself in.

A GameTrailers walkthrough from E3 2012 of an Unreal Engine 4 real-time tech demo with Epic's Alan Willard. It shows live code changes and hot reloading while the game runs.

A Computer History Museum demonstration with Dan Ingalls of Smalltalk-76 running on a Xerox Alto, recorded in 2017. He shows the live environment and discusses the system.

A short demonstration of radioteletype (RTTY), a digital communication mode used in amateur radio, showing what the signal sounds like.

A 1991 NeXT promotional video that stages a head-to-head programming contest between a NeXT computer and a Sun workstation. It shows NeXT's interface builder and object-oriented tooling producing an application far faster than traditional UNIX development.

A timelapse of Notch (Markus Persson) creating his Ludum Dare 21 entry, Prelude of the Chambered, from scratch in 48 hours.

A timelapse of Notch (Markus Persson) making Metagun, a game built from scratch in 48 hours for Ludum Dare 18. It shows the whole coding session sped up.

UploadVR covers a Facebook Reality Labs prototype that tracks facial expressions using cameras mounted in a VR headset. The updated version captures subtle micro-expressions for realistic avatars.

A 35-minute demonstration of NeXTSTEP Release 3 by Steve Jobs. It shows the object-oriented development environment and features such as dragging a live chart between apps.

Linus Tech Tips tests whether USB Type-C connectors are more durable than Micro-B by repeatedly plugging and unplugging them. In the test, Micro-B failed at around 8000 insertions while USB-C kept working.

Bruce Hauman live-codes Flappy Bird in ClojureScript in about six minutes, using figwheel to hot-reload changes into the running game. The demo shows game behavior being changed interactively without restarting.

Matthaeus Krenn presents a concept for car touchscreen UI where the screen controls only one thing at a time, designed to suit driving. A tablet prototype accompanies the short demo.

Steve Jobs demos NeXTSTEP Release 3, showing the object-oriented development environment and UI that later became the basis of Mac OS X. Midway through he builds a database-backed GUI app with Interface Builder and Enterprise Objects Framework with almost no code.

A 1995 Sun Microsystems film about the Self programming language, a prototype-based Smalltalk relative, showing its live, graphical programming environment.

Google engineer Dany Qumsiyeh presents a prototype automatic, non-destructive book scanner that turns pages and captures high-resolution images, built in Google's workshops. The talk includes a live demo and a short technical overview.

A Gource visualization of 826 days of Minecraft development, from alpha 1.2 to release 1.5, condensed into eight minutes. Each dot is a file, folders are links, and developers fly around zapping files as they work on them.

A short clip of the Super Mario Bros 3 proof-of-concept PC port built by id Software's founders to pitch Nintendo on a PC version. Nintendo passed, and the same technology led to Commander Keen.

The Godot Engine 2022 showreel of apps and tools built with Godot, with a timestamped list of each project. It shows the engine being used well beyond games.

An early 2009 tech test by Notch of an Infiniminer-style cave game running about 700 fps on a 256x256x64 tile map. It is the prototype that grew into Minecraft.

Promotional video from Zapata Racing showing Franky Zapata flying the Flyboard Air prototype, claiming autonomous flight to 10,000 feet, 150 km/h top speed and 10 minutes of endurance.

A live mock programmer interview in which Casey Muratori interviews game developer Shawn McGrath using a less confrontational format devised by Chris Hecker. It gets deep into technical details while showing how the candidate actually thinks and works.

Allan Blomquist demonstrates the internal programming and debugging tools Tomorrow Corporation uses to make games, including live modification of a running game and time-travel debugging.

A four-minute tour of the TeXmacs scientific editor, showing math typing, figures, citations, a drawing tool, document styles, HTML export, presentations and animations.

AngeTheGreat describes building a physically realistic internal combustion engine simulator in C++, drawing on fluid dynamics, physics and chemistry. It generates procedural audio for engines such as a V8.

A demo of the Symbolics Graphics Division's S-Packages, a Lisp-based 3D color graphics and animation system from the 1980s. It was later used in developing for the Nintendo 64.

In the finale of Double Fine's Devs Play, speedrunner SMK demonstrates glitches and exploits that skip entire sections of Psychonauts while Tim Schafer and the dev team watch. The developers react to and discuss the bugs as they appear.

Andreas Kling ports the game Diablo to SerenityOS, his from-scratch Unix-like operating system, using the devilutionX project. The roughly 80-minute session shows what porting third-party software to the OS involves.

A five-minute video showing how to build a counter in the Imba web programming language in under a minute, then style it.

A five-minute demo of a live ClojureScript game editor by Chris Granger. It is based on Bret Victor's demo from the Inventing on Principle talk, with code changes reflected instantly in the running game.

A Microsoft Flight Simulator Feature Discovery episode in which CEO Sebastian Wloch explains the new aerodynamics simulation for the 2020 release.

A five-minute demo of the Common Lisp debugger fixing a bug, recompiling a single function, and resuming execution from the failed stack frame. It shows how to avoid re-running long computations.

A compilation of hover tests of exoatmospheric kill vehicles, the small rocket-propelled interceptors used in missile defense, including early prototypes from the late 1980s. It shows the vehicles maneuvering with thrusters in test facilities.