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Vincent D. Warmerdam

@koaning.bsky.social
3K followers 793 following 595 posts

Prefer common sense over hype. Employed at @marimo.io, known for calmcode.io and koaning.io. Also working on remember.cards these days.

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Vincent D. Warmerdam @koaning.bsky.social · 06/10/2026
TIL that ceramic keycaps are actually a thing. youtu.be/G27Mcd2RDNQ
youtu.be
Yes, Ceramic Keycaps
YouTube video by CalmCode
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Vincent D. Warmerdam @koaning.bsky.social · 05/10/2026
The line between winning and losing can be incredibly blurry at times ... www.youtube.com/watch?v=Q-Ks...
youtube.com
The Optimizer's Curse
YouTube video by marimo
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Vincent D. Warmerdam @koaning.bsky.social · 25/09/2026
It's funny you mentioned that because I am actually exploring a little Plants vs. Zombie simulation. How many sunflowers should you plant before you plant a pea-shooter?
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Vincent D. Warmerdam @koaning.bsky.social · 24/09/2026
Adding more fun data to my datasette instance.
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Vincent D. Warmerdam @koaning.bsky.social · 21/09/2026
Why? Because it is worth defending, that's why. koaning.substack.com/p/in-defense...
koaning.substack.com
In Defense of Weird Internet
It keeps online life interesting
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Vincent D. Warmerdam @koaning.bsky.social · 07/09/2026
I wish people would share fun datasets more. So I made a little video on datasette to help motivate what's so cool about having your own little data-sharing-instance out there. youtu.be/RSUfvh9MowE
youtu.be
The Tool That Solves The Silent Data Problem
YouTube video by marimo
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Vincent D. Warmerdam @koaning.bsky.social · 04/09/2026
appreciate the ping but not sure if i fully agree with the design. your thumb enjoys a circular arc movement ... why make the thumb buttons a straight line?
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Vincent D. Warmerdam @koaning.bsky.social · 01/09/2026
Why build a final solution when you can build the lego bricks instead.
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Vincent D. Warmerdam @koaning.bsky.social · 21/08/2026
yo @zed.dev is pretty darn cool that crosshairs in their agent sidebar totally helped me catch a bunch of problems
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Vincent D. Warmerdam @koaning.bsky.social · 19/08/2026
link?
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Vincent D. Warmerdam @koaning.bsky.social · 19/08/2026
rct.css is a fun reminder of RollerCoaster Tycoon for the web koaning.github.io/rct-css/
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Vincent D. Warmerdam @koaning.bsky.social · 17/08/2026
So yeah, I actually got this to work. I'll be running more and more simulations for HOMM3, if there's stuff you think that I should check, let me know!
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Vincent D. Warmerdam @koaning.bsky.social · 12/08/2026
you can now attach MIDI hardware in marimo notebooks, latest version of wigglystuff supports the "knob" widget
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Vincent D. Warmerdam @koaning.bsky.social · 12/08/2026
Added a new roster of units to my datasette instance. We now have HOMM3 + unofficial expansion units. datasette.exe.xyz/h3_units/units
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Vincent D. Warmerdam @koaning.bsky.social · 12/08/2026
I am going to attend PyData Amsterdam this year
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Vincent D. Warmerdam @koaning.bsky.social · 27/07/2026
i mean, that too :sweat-smile:
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Vincent D. Warmerdam @koaning.bsky.social · 27/07/2026
Being in tech and being dyslexic really makes ads feel different. I honestly thought I was looking at an ad for agent support in music instruments for a bit ...
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Vincent D. Warmerdam @koaning.bsky.social · 23/07/2026
Code should make it inevitable for you to learn. And I just released a first set of tools that show you how you might get there. youtu.be/VD5bAOvDxFY
youtu.be
Making It Impossible Not To Learn
YouTube video by CalmCode
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Vincent D. Warmerdam @koaning.bsky.social · 18/07/2026
Am just going to leave this here in case people want to pitch in :) www.reddit.com/r/marimo_not...
reddit.com
From the marimo_notebook community on Reddit: marimo is doing a launch-week next week! Can anyone guess what we will announce?
Explore this post and more from the marimo_notebook community
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Vincent D. Warmerdam @koaning.bsky.social · 17/07/2026
Hah! I'll take the compliment but am swamped with other topics at the moment.
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Vincent D. Warmerdam @koaning.bsky.social · 08/07/2026
I gave a demo yesterday to my colleagues that went so well that I figured I might as well make a recording of it right away. It's super early, but it's a v0 in a direction of "more humane coding experiences". May it offer you something to think about! youtu.be/BrQLCqofc30
youtube.com
Code That Is More Humane
This is a re-recording of a demo that I gave internally yesterday. ...
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Vincent D. Warmerdam @koaning.bsky.social · 08/07/2026
marimo webapps can also be deployed as interactive slides. And that means that if somebody asks a question about the data ... that you can live update the SQL behind the chart! Check it out if you haven't already: www.youtube.com/watch?v=_jc...
youtube.com
marimo is Better At PowerPoint Than PowerPoint
We upgraded the slides feature in marimo and we can genuinely say t...
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Vincent D. Warmerdam @koaning.bsky.social · 07/07/2026
Sometimes you win by throwing a GPU at a problem. But even in those cases ... it helps to consider your throwing technique. More details, and fun algorithm, in this video: youtu.be/1-5wkzdP1Jc
youtube.com
How to Throw a GPU at a Problem
If you have a GPU, sometimes it helps to dumb-down the algorithm. I...
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Vincent D. Warmerdam @koaning.bsky.social · 02/07/2026
Been working on a marimo mossball pico8 game. The AI is actually made with @marimo.io. Folks will need to wait just a little bit for this to be live, but if you're keen to play something fun in the meantime ... check out moss moss from @noelcody.bsky.social
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Vincent D. Warmerdam @koaning.bsky.social · 01/07/2026
TIL about elasticnet. An energy function trick to attempt to make TSP a differentiable problem. It doesn't perform well, but the animation is pretty! molab.marimo.io/github/koan...
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Vincent D. Warmerdam @koaning.bsky.social · 30/06/2026
If you want to know the fix ... it was to just start a new file, save it, and to then copy everything in. Honestly!
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Vincent D. Warmerdam @koaning.bsky.social · 30/06/2026
This is software I pay for and it is borderline insulting.
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Vincent D. Warmerdam @koaning.bsky.social · 29/06/2026
Thanks for sharing. Yeah, part of me regrets selling the moonlander. Am eyeballing second hand websites to buy one for the wall. Not the most ergonomic, but certainly a fun keyboard to type on.
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Reposted by Vincent D. Warmerdam
Gaël Varoquaux @gaelvaroquaux.bsky.social · 29/06/2026
🧑‍💻🧑‍🏫 I'm recruiting a post-doc to work on Tabular Foundation Models, one of the hotest topics in AI, where we are at the leading edge team.inria.fr/soda/files/2... This is an opportunity to develop the next-level tabular AI, blending deep learning and tables.
team.inria.fr
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Vincent D. Warmerdam @koaning.bsky.social · 29/06/2026
This video is all about a silly experiment that's been in my mind recently. Now that molab has GPUs ... can I use deep learning architectures to solve (NP)-hard computer science problems? youtu.be/QnP-EdJyiDo...
youtube.com
Probably The Weirdest PyTorch UseCase
Can neural networks tackle a TSP problem? The answer depends *a lot...
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Vincent D. Warmerdam @koaning.bsky.social · 28/06/2026
Played this the other day, it's amazing!
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Vincent D. Warmerdam @koaning.bsky.social · 25/06/2026
Just a small pro-tip: you can add vertical terminals by dragging the icon from the horizontal region to the sidebar.
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Vincent D. Warmerdam @koaning.bsky.social · 23/06/2026
TIL that FastAPI Cloud is in public beta. I also learned that you could do a fun marimo trick with that service too! youtu.be/HX3gMgkmqnk
youtube.com
You Can Run marimo on FastAPI Cloud
FastAPI Cloud is now in public beta. It's great for FastAPI apps, b...
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Vincent D. Warmerdam @koaning.bsky.social · 23/06/2026
Is Sam on bluesky? I couldn't find him.
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Vincent D. Warmerdam @koaning.bsky.social · 23/06/2026
@fastapi.tiangolo.com now confirmed: FastAPI Cloud totally supports a marimo web deployment too 😀 youtu.be/HX3gMgkmqnk
youtu.be
You Can Run marimo on FastAPI Cloud
YouTube video by marimo
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Vincent D. Warmerdam @koaning.bsky.social · 22/06/2026
MNIST1D is my favourite dataset now. youtu.be/2eoOqqLvkl8
youtube.com
MNIST is Better in One Dimension
You've probably heard of MNIST before. It's the 101 hello world of ...
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Vincent D. Warmerdam @koaning.bsky.social · 22/06/2026
@hippopedoid.bsky.social I *think* I'm speaking to the correct Dmitry when I say this, but I really liked your paper! So we made a highlight of it for our YT channel. youtu.be/2eoOqqLvkl8
youtu.be
MNIST is Better in One Dimension
YouTube video by marimo
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Vincent D. Warmerdam @koaning.bsky.social · 11/06/2026
I wanted to learn about this new Hermes thing so I figured I'd do a search on YouTube. Asking for a friend, does anyone have a normal/calm explainer of it?
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Vincent D. Warmerdam @koaning.bsky.social · 11/06/2026
marimo is hosting a new notebook competition! And we've got free GPUs that you get to play with this time around. There's prizes too, and you can learn more here: marimo.io/pages/event...
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Reposted by Vincent D. Warmerdam
David Picard @davidpicard.eurosky.social · 09/06/2026
I'm taking this opportunity to make some advertising for an ECCV Workshop on empirical theory proposed by @jvgemert.bsky.social empiricaltheory.github.io Yes it's related. Think harder. You can connect the dots, I have faith in you 😉
empiricaltheory.github.io
E.T. : Empirical Theory in Representation Learning
Phoning home to science
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Vincent D. Warmerdam @koaning.bsky.social · 09/06/2026
I was contemplating sending you an email about it, but am even happier to found a way to follow you. That paper really made an impact the first time I read it back in 2018. It's one of the first experiments I'd do with a data class after reading it.
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Vincent D. Warmerdam @koaning.bsky.social · 08/06/2026
A highly personal remedy, but I can imagine other people may enjoy it too. youtu.be/vnmzz7vd_T8
youtube.com
How to Care About Code Again
Sure, there may be moments when you don't really care much about th...
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Vincent D. Warmerdam @koaning.bsky.social · 05/06/2026
Not an AMA, but a TMA. Tell Me Anything! www.reddit.com/r/marimo_no...
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Vincent D. Warmerdam @koaning.bsky.social · 01/06/2026
So we have a new thing that we've been working on ... Details are in the video: youtu.be/r3zrc7lwl6k
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Vincent D. Warmerdam @koaning.bsky.social · 01/06/2026
May this riddle nerd-snipe you as well. youtu.be/-Wdwiyxbp-8
youtube.com
The McNugget Nerd Snipe
You can buy McNuggets from MacDonalds in packs of 6, 9 and 20. That means that you can buy 12 nuggets in total, but you cannot buy 19. So if we connect all n...
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Vincent D. Warmerdam @koaning.bsky.social · 28/05/2026
Quality is so rare sometimes that it is a genuine relief when you stumble upon it.
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Vincent D. Warmerdam @koaning.bsky.social · 27/05/2026
A new day, a new wigglystuff widget enters the scene ...
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Vincent D. Warmerdam @koaning.bsky.social · 27/05/2026
This is happening again, and it's the coolest thing. Do consider participating! I'm prepping my marimo notebook story during the weekends again :) some.3b1b.co/
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Vincent D. Warmerdam @koaning.bsky.social · 27/05/2026
I may be able to demonstrate some new tools at this event. That includes some personal things, as well as things that we've been cooking at marimo. Do join for the hallway track! luma.com/twmvmr5r
luma.com
Learning in the Age of AI @ Xebia · Luma
Wecome to a the MLOps Community Meetups - EdTech Special in Amsterdam! This time, we are diving into how AI can be leveraged to support learning and education,…
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Vincent D. Warmerdam @koaning.bsky.social · 26/05/2026
Great song sometimes package some life advice. Be yourself Give your free will a chance You've got to want to succeed
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