Better late than never - this week's Module of the Week is all about RcMap, @EffectTS_ 's reference counted map module.
See you nerds at Office Hours tomorrow!
effect.website/blog/module-o…
This is now available in the latest @EffectTS_ RC release.
You can use @effect/ai-typesafe or the open router package to provide a DecisionModel implementation.
- Yes I reviewed them all with my own eye balls
- But my clankers cleaned up all the slop first so they were in a better state before I looked at them (stats below)
- Most of them were only a couple line fixes so generally took less than a minute to understand the change
Huuuge thanks to @kitlangton and @anomalyco for unleashing Astra on Effect. 🫡
In just over two days:
204 PRs opened. 174 already merged.
Fixes across the runtime, platform, SQL, Schema, CLI, docs, and more!
Effect Days is back 🇮🇹
Join us on December 9–11 for three days with the people building Effect and the people building with it.
Workshops. Talks. Community.
Early Bird tickets are now live ↓
effect.website/effect-days
ALT Effect Days 2026 banner eaturing a large group photo of the Effect community.
Effect v4 Release Candidate is here!
After months of beta releases, real-world usage, and community feedback, v4 is entering the final stretch before stable.
Try it, migrate, test your integrations, and tell us what still breaks before 4.0.
↓↓↓
effect.website/blog/releases…
ALT Effect v4 Release Candidate banner. A horizontal timeline shows 3.0 stable on the left, 4.0 RC in the center marked “we are here,” and 4.0 stable on the right.
I made a small spotlight-like app for quickly sending tasks to my clankers. Super useful for capturing quick thoughts when in the middle of something else!
It does a bit of investigation first then assigns it the best agent for the job using @MulticaAI
Enjoy a special Cause & Effect episode with @jdegoes, creator of @zioscala, and grandfather of Effect.
@schickling@MichaelArnaldi
00:00 Intro, From ZIO to Effect
06:54 Software engineering in the age of AI
12:34 More developers, but a wider skill gap
23:03 What is still worth learning?
29:40 Closing the loop around coding agents
39:10 Preventing engineering skills from atrophying
47:20 Effect through the eyes of ZIO’s creator
52:42 Why Effect’s primitives matter more with AI
58:05 Teaching coding agents to write good Effect code
1:01:25 Rethinking tests, DRY, and boilerplate
1:08:45 The Effect Companion
1:18:16 A role-playing game for learning Effect
1:25:05 Turning knowledge into a product
Been having fun coding with the boys. Each agent uses a particular model, system prompt and skills to excel at its job.
Using a mix of Fable, 5.6 sol and Kimi K3.