@rtfeldman
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Let’s go with the ambitious approach.
Philadelphia, PA
Joined September 2008
- Tweets2.6K
- Following676
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Richard Feldman retweeted
The same thing with happen with AI video as happened with AI writing and AI art. As soon as we're oversaturated on a style, it becomes gauche. We want to see novelty, we want to see style, and above all we want to see craft.
Richard Feldman retweeted
in Delta (delta.dev), you can easily learn about the product from the product.
if you're unsure whether we already support something you're missing, just @-mention delta at any time and you'll get the answer right away, without even having to visit the docs :)
Richard Feldman retweeted
Post-Git Agentic Collaboration
Yes, we did Multiplayer AI live with Lukas Wirth (@zeddotdev)
My keynote from FUNARCH 2026 is up!
"Functional Mechanical Sympathy"
youtu.be/jSHmDnUZCm8?si=9Z_0…
Richard Feldman retweeted
curious if someone from @NotionHQ here could share a bit about the heuristic to notify someone that's been @-mentioned on a document. when does the app know it's time to fire-off the email/app notification pipeline?
Richard Feldman retweeted
Really enjoyed the talk. I watched Casey's OOPs talk at the time. This provided a lively additional followup. Making my way through the video links in the YT description.
So at the beginning I foolishly tempted fate by joking with @cmuratori that there would be no technical difficulties with the recording.
It ended up having *by far* the most technical difficulties of any recording in the history of the show.
Lesson learned: do not self-curse.
Richard Feldman retweeted
For people wanting to use DeltaDB from an agent harness other than Delta, can you help me understand the specific capabilities and workflows you hope that would enable for you? I'm trying to improve my understanding of what people are wanting out of this use case. Thanks!
Richard Feldman retweeted
Defining row-level security policies can be simple and efficient!
✨ acadia.engineering/blog/simp… ✨
Acadia even does "symbolic evaluation" at compile time so that in many cases, you pay zero runtime cost for your security guarantees!
The example app runs an Elm server too! 🚄
Richard Feldman retweeted
Richard Feldman (@rtfeldman) uses Delta to update Delta itself, then walks through how code review and collaboration work. Check it out!
youtube.com/watch?v=HWB48DFk…
Richard Feldman retweeted
Last week, we turned off pull requests in the Delta repository, and moved all review into Delta threads.
Delta generates guided reviews of changes, and allows us to comment in context alongside the teammates and agents who produced the code.
Now, your team can do the same.
zed.dev/blog/delta-public-be…
Richard Feldman retweeted
Run an Elm program as a simple HTTP server!
✨ github.com/acadia-engineerin… ✨
Check out the full client/server/database example written in Elm/Acadia, and please share your results if you evolve it into something cool!
Very curious to see what you can make!
Idea for a button in email clients: Report Spam And Tell Them You Know This Hurts Their Deliverability But They Are The Ones Who Signed You Up Without Asking And Then Hid The Unsubscribe Link Under The Words Manage Your Preferences Or Whatever.
There's probably an icon for that.
Richard Feldman retweeted
My favorite part of the Lincoln-Douglas Debates is when Douglas said, "This Post was deleted by the Post author," and Lincoln countered, "You’re unable to view this Post because this account owner limits who can view their Posts. Learn more."
2x the builds, half the duration — that's what @honeycombio saw after switching from CircleCI to RWX in March 2026.
@lizthegrey (Technical Fellow at Honeycomb) included the exhibit below in the company's blog post, "AI Amplifies Your Existing Practices: Lessons from Our Shift to an AI-First Strategy."
As Liz puts it: "Fast CI is no longer a nice-to-have. It's now a precondition for AI throughput to be worth anything at all."
Read Honeycomb’s full post: honeycomb.io/blog/ai-amplifi…
A browser extension that replaces all instances of "many orders of magnitude" with "at least 1,000,000,000,0000x"
Richard Feldman retweeted
Acadia is out today! Bringing the benefits of @elmlang to SQLite and PostgreSQL:
- Friendly error messages
- Custom types for precise column data
- Simple module system for easy reuse
Check it out! acadia.engineering/blog/reth…
Richard Feldman retweeted
Another day GitHub is down, another day teams using RWX can run all their CI locally so they can keep moving while they wait for GitHub to come back up.
Recording is up! 😃
Thanks again for having me, it was fun to talk about all this!
A Preview of Roc 0.1.0 by @rtfeldman at Func Prog Sweden
@roc_lang first numbered release, 0.1.0, is on the horizon. This talk previews what we’re aiming to include, the key language and tooling milestones needed to get there.
youtu.be/a7qEOtkkDb8
