Elm Town

Members of the organising teams of all four major Elm conferences – elm-conf, Elm In The Spring, Elm Europe, and Oslo Elm Day – come together to discuss what goes into a successful Elm conference, the lessons they've learned along the way, and what we can expect at their next conference! Thank you to our sponsors, Ellie, Culture Amp and Joel Clermont. Special thanks to Xavier Ho (@Xavier_Ho) for editing and production of this episode! Recording date: 14 April 2019 Guests Blake Thomas (@dijjnn) Danielle Pham (@quelledanielle) Erik Wendel (@ewndl) Thibault Assus (@tibastral) Show Notes 00:00:00 Introduction elm-conf Elm In The Spring NoRedInk Elm Europe Not Only Meetings Oslo Elm Day Bekk 00:04:50 Sponsors Ellie Culture Amp Joel Clermont 00:06:53 Blake: How Elm In The Spring got started 00:08:43 Danielle: How they joined NoRedInk and elm-conf 00:10:08 Thibault: How teaching led to Elm Europe 00:11:53 Erik: Oslo Elm Day was “the ambitious approach” 00:14:30 Blind CFPs and curating for diversity Speak at elm-conf ElmBridge Global Diversity CFP Day 00:27:13 Doing it all again next year 00:29:35 The organising teams 00:31:04 Elm In The Spring coming up soon SPRINGTIME10 – 10% off Elm in the Spring 00:32:39 Blind CFPs and curating for diversity (part 2) 00:35:44 The organising teams (part 2) 00:39:06 Lessons: Respect the schedule 00:41:55 Lessons: Audience Q&A is usually a bad idea 00:45:37 Evan and Richard’s involvement 00:48:29 Elm Europe coming up in June ELMTOWN10 – 10% off elm-europe until the end of April 2019 00:49:01 Be there for the hallway track 00:52:35 Speaking at a conferece 00:54:38 Outro

Keith Lazuka and AJ Alt from Microsoft share their experience writing the amazing Elm language support package for the IntelliJ family of integrated development environments. Thank you to our sponsors, Ellie, Culture Amp and Joel Clermont. Special thanks to Xavier Ho (@Xavier_Ho) for editing and production of this episode! Recording date: 23 February 2019 Guests Keith Lazuka (@klazuka) AJ Alt (@ajalt on Medium) Show Notes 00:00:00 Introduction 00:01:37 Guest intro intellij-elm elm-hot 00:02:45 Project beginnings 00:07:10 About IntelliJ 00:08:04 Elm at Microsoft 00:09:20 Writing IntelliJ plugins with Kotlin 00:13:34 Parsing Elm to produce an Abstract Syntax Tree (AST) 00:16:22 So many features! 00:18:56 Type inference 00:19:55 How do you decide what features to build? 00:20:44 Tidying up dead code and imports since Elm 0.19 00:23:03 Supporting both Elm 0.18 and Elm 0.19 00:27:25 Parsing partial Elm programs with errors 00:30:38 Language servers and multi-editor support 00:32:57 Saving on scrolling 00:34:28 Effortless refactoring 00:36:19 Extensible records 00:37:43 Test-driven development & BNF grammar 00:38:39 How do you split work? 00:40:42 Outro

Erkal Selman shares the story behind Kite, a web application for drawing and exploring directed graphs written entirely in Elm. Thank you to our sponsors, Ellie, Culture Amp and Joel Clermont. Special thanks to Xavier Ho (@Xavier_Ho) for editing and production of this episode! Recording date: 25 January 2019 Guests Erkal Selman (@AzizErkalSelman) Show Notes 00:00:00 Introduction 00:01:34 Guest intro Kite Thread: An Interactive Visualization Tool for Graph Theory 00:04:59 Graph theory 00:07:08 Origins of Kite 00:10:13 Elm benefits 00:12:15 Inspirations Talk: The Life of a File, Evan Czaplicki Talk: Make Data Structures, Richard Feldman 00:13:24 D3.js via JavaScript interop 00:18:42 Replacing D3.js with elm-visualisation 00:20:37 It's Darth Vader!!! 00:21:05 Ian MacKenzie's elm-geometry Talk: Now You're Thinking in Functions, Ian Mackenzie 00:23:17 Matthew Griffith's elm-ui 00:25:41 Performance bottlenecks 00:27:09 Importing Elm dependency graphs Code: Support for private repos 00:29:44 Multiple centers of gravity 00:30:54 Planned features, welcomed contributions 00:34:20 Erkal wants a job! 00:35:03 Outro and the Sublime Text Editor Integration Package: Elm Language Support for Sublime Text

Brian Hicks stops by to talk about elm-particle, a handy particle physics simulation you can use to throw confetti across your users' screens! Thank you to our sponsors, Ellie, Culture Amp and Joel Clermont. Special thanks to Xavier Ho (@Xavier_Ho) for editing and production of this episode! Recording date: 2019-01-19 Guests Brian Hicks (@brianhicks) Show Notes 00:00:00 Introduction 00:01:32 Guest intro 00:02:12 Project origin Elm-particle 1.0.1: create visual flourishes in SVG 00:06:13 Particle Physics 00:08:20 Library Overview 00:11:21 Getting started with the API 00:12:36 Normal distribution of random numbers Random.Float.normal in Random.Extra 00:14:37 Opaque types and 'with' functions 00:17:21 SVG vs WebGL 00:21:39 Weighted randomness and Markov chains 00:24:25 Dynamic generators via subscription function 00:28:42 Generating GitHub site with make 00:30:56 Future work 00:33:17 Oslo Elm Day 00:33:51 Thank You

Manuel Fuchs shares what he learned by taking on a very unusual Elm project: a Nintendo Game Boy emulator! Thank you to our sponsors, Ellie, Culture Amp and Joel Clermont. Special thanks to Xavier Ho (@Xavier_Ho) for editing and production of this episode! Recording date: 2018-11-10 Guests Manuel Fuchs (@malax) Show Notes 00:00 Show opening 01:58 Manuel's journey to Elm 07:09 Why a Game Boy emulator Tetris Effect video: Writing a Game Boy Emulator in Ruby 12:19 False assumptions and unexpected difficulties 18:37 Loading Game Boy ROM images as binary data 19:59 Breaking out of the Elm Architecture 22:30 Implementing a CPU instruction set in Elm Elmboy source code 25:46 Debugging and profiling 27:03 Throwing out types 31:49 Adding Pokemon compatibility 33:30 Readability, teaching and welcoming contributors 34:57 More performance optimisations 41:05 Elm + Game Boy = fun Try Elmboy

Annaia Berry and Ossi Hanhinen share previously unreleased details of an important client project, and why their choice of Elm cost Annaia her job. Thank you to our sponsors, Ellie, Culture Amp and Joel Clermont. Special thanks to Xavier Ho (@Xavier_Ho) for editing and production of this episode! Recording date: 2018-09-30 Guests Annaia Berry (@ann_arcana) Ossi Hanhinen (@ohanhi) Show Notes 00:00 Show opening article: Prevent Impossible States with JSON Decoders in Elm, Julio Feijo 1:58 Guest Intros video: I Used Elm In Production and It Cost Me My Job 02:50 Annaia Berry The Heresy programming language 03:24 Ossi Hanhinen video: Beyond Hello World & Todo Lists 04:14 Futurice 5:03 The Project: Ferrari Sanoma Group Helsingin Sanomat (English) Ilta-Sanomat (English) 14:00 Ossi’s “Space Invaders” prototype article: Base for a game in Elm 0.17 14:36 Choosing and Learning Elm 32:02 Porting Ferrari to Elm 0.19 Elm Analyse Glitch slides: I used Elm in production and it cost me my job (source code) video: When and how to use Web Components with elm 44:26 Elm cost Anna her job

Robin Heggelund Hansen (Bekk Consulting) shares the very personal story that led to him contributing improvements to List, Dict and Array in Elm 0.19. Thank you to our sponsors, Culture Amp and Ellie! Recording date: 2018-09-30 Guests: Robin Heggelund Hansen (@robheghan) 1:55 article: Elm 0.19 Brings Better Collections 28:15 package: Elm Benchmark by Brian Hicks 32:08 package: AnyDict

Richard Feldman (No Red Ink) and Luke Westby (Ellie, No Red Ink) visit Elm Town to celebrate the just-released Elm 0.19, talk through No Red Ink's plan to upgrade its 250K lines of Elm to the new release, and revisit Luke and Richard's talks from Elm Europe on web components and data structures, respectively. Thank you to our sponsors, Culture Amp and elm-conf 2018! Recording date: 2018-08-25 Guests: Luke Westby (@blurrythoughts@mastodon.technology), Richard Feldman (@rtfeldman@mastodon.technology) 01:37 Elm 0.19 is out! 03:59 Guest introductions 05:24 Elm Europe talks 05:27 video: Make Data Structures, Richard Feldman @ Elm Europe 2018 07:49 video: When and how to use Web Components with elm, Luke Westby @ Elm Europe 2018 15:43 Ellie and Elm 0.19 16:54 audio: Elm Town 21 - Ellie! 17:32 Porting No Red Ink to Elm 0.19 40:57 Picks 41:31 article: Elm 0.19 brings better collections, Robin Heggelund Hansen 42:09 Mastodon 43:01 book: Capital in the 21st Century 43:30 Elm Language Support for Sublime Text 44:15 Frontend Masters 45:13 Dhall

Dhruv Dang visits Elm Town to share his experience learning from and ultimately adoption Elm at Project6. We discuss issues of team leadership, risk management, and hiring, and Dhruv explains Project6’s elegant solution to SEO with Elm. Recording date: 2018-08-16 Guests: Dhruv Dang (hi@dhruv.io) 02:05 About Project6 02:05 Project6 website 04:47 Doing your best work with Elm 04:47 Elm Blog: A Farewell to FRP 09:53 Elm Architecture in JavaScript 11:48 Adopting Elm (the Tech) 17:01 Adopting Elm (the Team) 22:09 Convincing Your Company 33:07 Elm and SEO 38:24 Blog post: SEO for Single-Page Apps 39:32 Elm and Hiring

Show Notes – Elm Town Episode 35 - Herzog Drei with Francesco Orsenigo Francesco Orsenigo visits Elm Town to share a behind-the-scenes look at his game Herzog Drei. It’s written entirely in Elm with 60fps SVG graphics and gamepad support. Recording date: 2018-07-22 Guests: Francesco Orsenigo (@xarvh) Stax.io Sebastian Porto Haifisch elm-gamepad Herzog Drei Dijkstra's algorithm John Carmack Quakecon 2013 talk Herzog Drei game state guide Elm Discourse thread #gamedev on Elm Slack