Functional Shell and Reusable Components for Easy GUIs

on YouTube ↗31m

" summary

Claims that GUI Easy (a small Racket library) replaces tangled OO GUI state with composable observables and views and that it scales from tiny utilities to the Frost Haven editor used in production. Shows concrete code: an input observable updates a picture canvas live via a derived observable, uses @ constructor and map over multiple observables, and exposes escape hatches to the Racket OO toolkit. Notes runtime footguns (subscriptions can create cycles; setting a derived observable errors) and that web sync works via a single subscription bridge.

AI-written summary · about

" chapters (10)

1. 0:00Introduction
2. 1:06Racket GUI challenges
3. 3:34Gooey Easy benefits
4. 5:59Frost Haven editor demo
5. 7:24Observables and views
6. 10:17Reusable components
7. 13:12MVC versus data-down actions-up
8. 14:57Inversion of control
9. 16:45Conclusion
10. 17:28Q&A

" related talks

• 34mFunctional UIs and Unidirectional DataflowMikael Brevik · JSConf Budapest 2015
• 38mRe-usable GUI Components with Re-frame and Atomic DesignMark Nutter · Clojure/conj 2018
• 43mEvolution of Functional UI ParadigmsMichael Sperber, Markus Schlegel · FUNARCH 2025
• 35mClojureScript & User Interfaces: Simplicity yields PossibilitiesJelle Akkerman · :clojureD 2015
• 45mJanus: Easy Complex UI with Declarative FRPIssa Tseng · Strange Loop 2021
• 40mReactive Programming: A Better Way To Write Frontend ApplicationsHannah Howard · Strange Loop 2018
• 58mA Case-study in Rewriting a Legacy GUI Library for Real-time Audio Software in Modern C++Roth Michaels · CppCon 2021
• 46mFRP In Practice: Taking a look at Reactive[UI/Cocoa]Paul Betts · Strange Loop 2014