elm

Richard Feldman's Elm Europe 2017 talk on how to structure and scale large Elm applications, including when to nest messages.

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.

A joint Erlang Factory 2016 keynote by Phoenix creator Chris McCord and Elm creator Evan Czaplicki on using the two together, including Phoenix.Presence design and PubSub optimizations.

Copenhagen's bicycle ambassador Mikael Colville-Andersen argues in a TEDx talk that bicycle helmets threaten bicycle culture. He says they distract from road design and make cycling look dangerous.

Richard Feldman describes introducing Elm into a mixed React and jQuery front-end in production, and why the result was reliable, clean and fast enough to make the back-end team jealous.

A one-minute skateboarding clip with a wreck in which a helmet likely prevented serious injury. It shows downhill longboarding without brakes.

FortNine argues that the US DOT motorcycle helmet standard (FMVSS 218) is badly outdated and weak. It compares it with Snell and ECE standards and points to where you can look up test reports for your own helmet.

Elm creator Evan Czaplicki's talk on how a file grows and when to split code up. He argues for keeping code in one file until it hurts and warns against premature extraction.

A Telegraph news clip showing newly revealed footage from the January 6 Capitol attack, with rioters overwhelming police. It accompanies coverage of the congressional committee's televised hearing.

A short promotional video of a 5-axis CNC machine milling an elaborate helmet, made by DAISHIN SEIKI with a DMG machine and hyperMILL CAM software. It shows what 5-axis machining can produce.

A JuliaCon talk by a NASA Launch Services Program engineer on modeling spacecraft separation dynamics in Julia. He describes replacing a Simulink-based workflow for checking launch vehicle separation requirements with Julia and ModelingToolkit, with large speedups and much shorter code.

Evan Czaplicki, creator of Elm, gives an elm-conf 2016 talk on the non-code side of building a language. It covers the philosophy behind Elm's development approach, including batching work and the priorities of different language communities.

Matthew Griffith, creator of elm-ui, presents a toolkit for designing layouts in Elm as an alternative to CSS. He explains the opinionated approach to layout and styling.

Richard Feldman's elm-conf talk on designing models so that bugs from impossible application states cannot occur, using Elm's compiler and types. It demonstrates techniques for making invalid states unrepresentable.

Elm creator Evan Czaplicki's 2018 Elm Europe talk on how to define success for an open source project and language community. It argues against judging projects by GitHub activity and touches on community expectations.

Evan Czaplicki, creator of Elm, discusses the hard parts of running an open source project: online community conflict, why its patterns arise, and a cultural history of open source. He offers ideas for more civil, productive communication.

Ben Anderson's VICE documentary shows embedded reporting on Afghan security forces and US Marines in Helmand during the troop drawdown, exposing incompetence, drug abuse and corruption.

Evan Czaplicki, creator of Elm, examines how programming languages are funded. He looks at where compiler engineers' salaries come from, why Go has about 5 engineers while Dart has about 30, and how this limits language design.

Evan Czaplicki's Strange Loop 2014 talk surveys the many formulations of functional reactive programming and how they relate historically and theoretically. It then shows how Elm's variant enables hot-swapping and its time-traveling debugger.

Richard Feldman argues that functional programming is not the norm largely because of historical accidents, such as C++ popularity, platform exclusivity, marketing spend and network effects, rather than merit. He traces the history of how languages become mainstream.

A short clip of Gary Johnson being booed at a Libertarian Party debate for saying he supports driver's licenses.

A Discovery Channel computer simulation of a large asteroid impact on Earth, showing the scale of the devastation. It sits in a broader context of early Earth impacts and the moon-forming collision.

A 21-minute animation showing how a sphere can be turned inside out without creases or tears, known as sphere eversion.

An animated account of Day 1 of the Desert Storm air war on 17 January 1991, covering the 2,775 sorties flown against Iraqi strategic targets in the first 24 hours.

A POV video of climbers illegally scaling the 650 m Shanghai Tower while it was under construction, filmed on a helmet camera.

Edward Kmett speaks at the Boston Haskell meetup about type classes and the design tradeoffs of global coherence compared with other approaches to implicit instances. It covers why uniqueness of instances matters for reasoning and refactoring.

Military History Visualized charts ship production by the United States and Japan from December 1941 to September 1945. The growing numbers show why Japan, despite a stronger starting navy, could not win a long war.

Lex Fridman interviews Bryan Johnson, founder of Kernel and previously Braintree, about brain-computer interfaces and Kernel's non-invasive brain monitoring hardware. It covers what the devices can do today and the company's plans.

Not Just Bikes explains why upright Dutch-style bicycles are comfortable and practical, and why they are rare outside the Netherlands.

A sped-up two-minute view of morning rush hour at a busy Utrecht junction, where thousands of bicycles and buses pass each day. It illustrates a city where about a third of trips are by bike.

Helmet-camera footage of linemen installing a spacer on an energized 765,000 volt transmission line, working from a helicopter. The crew bonds on and off the live wire as part of the job.

A performance recording of Alvin Lucier's 1969 experimental piece in which a spoken text is repeatedly played back and re-recorded in a room until the room's resonances overwhelm the words. It is a landmark of electronic and conceptual music.

Highlight clip from the 2021 Free Expression Awards honoring YouTube CEO Susan Wojcicki. The video became notable for its overwhelmingly negative like/dislike ratio.

A short Streetfilms montage of Vredenburg in Utrecht, a car-free street carrying about 33,000 cyclists a day. It shows heavy bike traffic alongside pedestrians and buses.