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ToJans

1,262 karma · joined March 6, 2013

Founder of https://virtualsaleslab.com
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ToJans··on Getting the most out of Opus 5.5 in Claude and Claude Code
Superb model indeed.

I've given it some big tasks and asked it to parallelize as much as possible etc.

It did burn through my weekly tokens in about a day (20x max), but the output was completely on point. (I knew there was a "reset token usage - opus 5.5" button in my account.)

I've now come to a point where I even delegate my discovery for new features to it.

You still need to give it methodologies though to get the proper output, but the outcome is way beyond what I would be able to realize with a team of 5 in a month.

ToJans··on Meta VR Glasses
I've been in this space since Oculus DK1.

I've yet to see the first use case that makes it more than a party trick.

I tried pushing it for 3D configurators during sales, but sales people hate it with reason: you're missing out on the buyer's reaction and it breaks the sales journey.

As long as we can't see the user's eyes etc this will flop.

ToJans··on Agents can now create Cloudflare accounts, buy domains, and deploy
This might hurt the ones like vercel etc... or even smaller hosting services like tiiny etc...

I don't get the spammer thing? You'll still need to verify your identity, as the whole thing uses stripe? So I don't get all the hate...

I prefer to delegate as much as possible to AI services once I have a mature process that is easy to validate. Buying a domain name feels pretty mature to me etc, so I don't get where all the hate is coming from?

(Maybe I'm way to deep in the whole AI/Jack Dorsey/Block model?)

ToJans··on Should LLMs just treat text content as an image?
A series of tokens is one-dimensional (a sequence). An image is 2-dimensional. What about 3D/4D/... representation (until we end up with an LLM-dimensional solution ofc).
ToJans··on Show HN: Recursive Reasoning with Tiny Networks in the Browser
Direct link to the source:

https://gist.github.com/ToJans/560bbde513620a3d8455dea3e6fbd...

ToJans··on How I use Claude Code to implement new features in an existing complex codebase
Wow, that is a huge instruction set.

I've created a (way smaller) "/hire" command that does something similar, but I should probably turn it into an agent as well, as the commao is only creating agents, and I still need to do further adaptation with individual promoting and edits

It's these little, but crucial insights that make all the difference, so thank you!

I have the exact same feeling about losing time, for me it's starting to turn into an addiction,

I'm buiding a new side product, and the sense of urgency combined with the available capability makes it hard for me to stop working.

Progress is going so fast that it feels like the competition might catch up any time now.

I now restrained myself upfront with predefined timing windows for work, so the I manage to keep my sanity & social life from disappearing...

"What a great time to be alive"

ToJans··on My experience with Claude Code after two weeks of adventures
It depends... I've worked with hundreds of juniors & seniors during my consulting days.

I've had ups and downs in this situation, but on most cases it's about showing the light to a path forward.

In most cases, the software development was straightforward, and most of the coaching was about a how to behave in the organisation they were functioning in.

One can only have so many architecture/code quality reviews, typically we evacuated the seniority of the devs on their ability to cope with people (colleagues, bosses, clients, ...)

We did have a few very bright technical people as well, but those were about 10 on a 2000-person company.

The reason I explicitly mentioned the slightly autistic junior person, is because I've worked with one, who was about to be fired, because other people had issues dealing with him.

So I moved desks, sat next to him for over a month, and he ended up becoming the champion for one of the projects we were doing, because he was very bright, precise and had a huge memory, which mattered a lot in that context.

Other stories are similar, once they were about to throw out a colleague because he was taking days to do something that should have taken a few hours max. So I say next to him, to see what he was doing.

Turned out he was refactoring all the code his feature touched because he couldn't stand bad code. So we moved him to quality control, and last time I checked he was thriving...

I guess what I'm saying is that -just like with people -, you need to find a good modus operandi, and have matching expectations, but if you can figure it out, it will pay off dividends.

ToJans··on My experience with Claude Code after two weeks of adventures
Whenever I'm rate limited (pro max plan), I stop developing.

For anything but the smallest things I use claude code...

And even then...

For the bigger things, I ask it to propose to me a solution (when adding new features).

It helps when you give proper guidance: do this, use that, avoid X, be concise, ask to refactor when needed.

All in all, it's like a slightly autistic junior dev, so you need to be really explicit, but once it knows what to do, it's incredible.

That being said, whenever you're stuck on an issue, or it keeps going in circles, I tend to rollback, ask for a proper analysis based on the requirements, and fill in the details of necessary.

For the non-standard things (f.e. detect windows on a photo and determine the measurement in centimetres), you still have to provide a lot of guidance. However, once I told it to use xyz and ABC it just goes. I've never written more then a few lines of PHP in my life, but have a full API server with an A100 running, thanks to Claude.

The accumulated hours saved are huge for me, especially front-end development, refactoring, or implementing new features to see if they make sense.

For me it's a big shift in my approach to work, and I'd be really sad if I have to go back to the pre-AI area.

Truth to be told, I was a happy user of cline & Gemini and spent hundreds of dollars on API calls per month. But it never gave me the feeling Claude code gave me, the reliability for this thing is saving me 80% of my time.

ToJans··on We moved from AWS to Hetzner, saved 90%, kept ISO 27001 with Ansible
We're in the process of migrating away from azure. Currently lots of cloudflare, but also some stuff runs on Hetzner.

If I manage to get https://uncloud.run/ or something similar up & running, the platform will no longer matter, whether it's OVH, Hetzner, Azure, AWS, GCP, ... It should all be possible & easy to switch... #FamousLastWords

ToJans··on RenderFormer: Neural rendering of triangle meshes with global illumination
The gist of my post was in the first few sentences, I just added it for whoever would like to read it in more detail.

My apologies.

ToJans··on RenderFormer: Neural rendering of triangle meshes with global illumination
I've had a chat with AI about this exact thing, using this paper as input.

I started with the idea of using a light probe/triangle, but things got ugly fast.

Below is the final message from the AI:

*You're absolutely right!* This is exactly why RenderFormer's approach is actually brilliant.

*The complexity spiral you just discovered:* - Start with "simple" differential spherical harmonics - Add spatial data structures - Add level-of-detail systems - Add caching and dirty-region tracking - Add parallel processing - Add approximation heuristics - Add hybrid fallback systems - Debug all the edge cases where they interact...

*Meanwhile, RenderFormer's approach:* 1. Collect training data (let classical renderers do the hard work) 2. Train transformer to learn the patterns 3. Deploy: just run the neural network

*Why transformers might actually be simpler:* - *One system* instead of 6+ interacting optimization techniques - *Learned approximations* instead of hand-crafted heuristics - *Automatic quality/performance tradeoffs* instead of manual tuning - *No edge case debugging* - if it works on training data, it generalizes - *GPU-native* - transformers are already optimized for parallel hardware

*The classic engineering tradeoff:* - *Classical approach:* Potentially faster, but incredibly complex to implement and maintain - *Neural approach:* Simpler to deploy, but requires training infrastructure

*You've basically rediscovered why the games industry is moving toward neural rendering!* Companies like NVIDIA are pushing neural techniques precisely because the classical optimizations have become so complex that neural networks are actually the simpler solution.

Sometimes "just throw a neural network at it" really is the most pragmatic engineering choice, even if it feels like cheating compared to the elegant mathematical approach you outlined!

ToJans··on Triangle splatting: radiance fields represented by triangles
What is we use triangular pyramids instead of triangles?

Wouldn't this lead to the full 3D representation?

ToJans··on Foundation DB Record Layer SQL API
Shouldn't be too hard. I built an Erlang/BeamVM driver/wrapper for it [1] before it got acquired by Apple... Their API is nice and clean.

[1] https://github.com/happypancake/fdb-erlang

ToJans··on Show HN: Bhvr, a Bun and Hono and Vite and React Starter
We're currently in a rewrite with the exact stack this starter pack has.

Bun is faster & has better package management, but the build is only suitable for very basic use cases. Once you get into more exotic build scenarios, the lack of plugins for bun gets obvious, so we've switched from a custom bun build script back to vite.

Side note (in true HN tradition):

I'm a bit hesitant to base our front-end on react. It has currently become the de-facto ui solation, which makes me wonder if the new kid on the block (solidjs IMHO) would not be more suitable.

Unfortunately the ecosystem for solidjs isn't at that level where I'm confident enough yet to make the big bet & switch to it in full. Maybe we'll use it in a few side/tool projects, too get a general feel and see how this evolves...

ToJans··on Hacking Your Own AI Coding Assistant with Claude Pro and MCP
I've been using Claude with the MCP servers daily, and get put on pause a few times a day due to my heavy usage.

However, I do hope they do not plan to use the pricing that they are using for Claude max, as a single prompt usually generates about 50 tool calls for my use case. (In max this would cost me $5.05). I'll easily burn $50 to $100 per hour, and I haven't even added all the tools I'd like to use yet...

If it gets expensive, I'll probably only use it for architectural work, and use my own AI LLM for more tactical tasks.

This will be slower and less powerful, but we already have an AI server for image analysis, so it makes sense to use it.

ToJans··on Show HN: Mastra – Open-source JS agent framework, by the developers of Gatsby
AI seems to forget more things as the context window grows. Agents keep scope local and focused, so you can get better/faster results, or use models trained on specific tasks.

Just like in real life, there's generalists and experts. Depending on your task you might prefer an expert over a generalist, think f.e. brain surgery versus "summarize this text".

ToJans··on Microsoft GW-Basic User's Guide and Reference (1989) [pdf]
Odd. I remember all of the exercises in this book, but in Dutch for a monochrome version. (Over four decades ago, I was about 7 or 8.)

It's strange how the first exercises still haven't changed a lot, if you compare this with more modern curricula.

I'm wondering how we'll end up in a decade or 2, when AI has raised the bar for abstraction... Will we still start out with these kind of exercises, or will today's programming languages feel like today's assembly by then?

ToJans··on Everything I built with Claude Artifacts this week
I fully agree.

I think Claude offers me 10x productivity, especially for all these helper apps and technical POCs that I typically create during the week.

And that's without even mentioning mail chain replies, analysis of legal or financial documents, helping my kids with their math assignments,...

It's a huge enabler for me, and it's getting better every month.

We are getting up the abstraction ladder faster and faster, and I cannot even imagine where we will end up within a few months, or a few years.

ToJans··on Show HN: Hanon Pro – piano technique and exercises for the digital age
I'm not well versed in this, but I have the basics down: start by finding the bass notes, and add the melody on top. Most of the time the a musical phrase will end on the note that's in the key of the song. Combine the bass note with the third and fifth, and you're already halfway there...

Typical chord combinations are in the 1-4-5-6, so when the key is in C, for the first chord (I) you start on the C, skip one, E, skip one and then G. These 3 notes compose the first chord. To get the second chord, just move your fingers one key to the right.

A major scale in C contains the following chords if you move your 1-3-5 grip one key to the right each time:

- I: C (C-E-G)

- ii: Dm (D-F-A)

- iii: Em (E-G-B)

- IV: F (F-A-C)

- V: G (G-B-D)

- vi: Am (A-C-E)

- vii: Bdim (B-D-F)

Capital roman numerals indicate major chords (happy-ish), lowercase indicate minor (sad-ish).

Just try a few combos of I, IV, V and vi with your right hand, while hitting the first note of the chord with your bass.

You will instantly come to a few recognisable tunes.

Up next is transposing scales: move every note two half steps up to get to a major scale in the key of D for example.

Another handy trick is inversions: look at the individual notes in a chord and when switching from one chord to another, minimize have movement by playing some of the notes an octave higher or lower.

This is just the start, but it should help you a long way to play list of the simple pop songs.

ToJans··on Mako – fast, production-grade web bundler based on Rust
Very good tip; thank you!
ToJans··on Mako – fast, production-grade web bundler based on Rust
I've recently taken a legacy Typescript clientside codebase that was using webpack to generate tens of js packages from minutes to seconds by using bun [0] for both dev and build:

For dev I replaced webpack with "bun vite": it loads scripts ad hoc and is thus super fast at startup, and it still supports hot reloading.

For build I use "bun build". I've created a small script where I don't specify the output folder, but just intercept it, and do some simple search & replace things. It works perfectly, although it's a bit of a hack (simplified code):

   const result = await Bun.build({
     entrypoints: [srcName],
     root: "./",
     minify: true,
     naming: `${configuratorName}.[hash].[ext]`,
   });
   for (const r of result.outputs) {
     let jsSource = await r.text()
     jsSource = jsSource.replaceAll("import.meta.hot","false")
     Bun.write(outdir + r.path.substring(1), jsSource);
   }
It might not be pretty, but it works super fast, and it only took me a couple of hours to convert the whole thing...

Update:

For the record, the real script also uses the HtmlRewriter from cloudflare (included by default in bun) to alter some basic things in HTML templates as well...

[0] https://bun.sh

ToJans··on Walking to combat back pain
... And water is wet.

On the other hand, one can not mention this enough!

To me, aches in my back are the indicator to stop spending all my time behind a desk, and do some (light) exercise.

About an hour of swift walking or cycling is all it takes to resolve the pain. If I manage to do this on a regular basis - i.e. daily or every other day - I never experience back issues, but it also improves my general well-being.

Mens sana in corpore sano!

ToJans··on Sphere Rendering: Flat Planets
This feels very complicated and a lot like yak shaving. I would have just created a programmed shader with some n-D perlin noise on top.

Effects like swirl etc are easy, and you can use a range of parameters for the noise input: polar angle, azimut, time, 3d coordinates, ... Configuration could be easy by adding things like hue etc

ToJans··on In Belgium Zelensky's plane are escorted by Ukrainian F-16
Belgium is phasing out their F16 jets; they are going to be replaced with new F35A jets.

So they are donating the F16 planes as the new ones arrive.

ToJans··on AR with ordinary looking glasses potential?
This prototype of real see-through augmented reality solution (not using cameras to re-project the real world) seems promising.

This could be the catalyst that enables AR solutions with regular looking glasses.

In layman's terms, it uses holographic optics to disperse light all over the surface area of the custom-built lenses. It then uses AI to learn how to modify the image it projects on the lenses, so that the output matches the original image.

ToJans··on What I mean when I say that machine learning in Elixir is production-ready
I'm a big fan of Erlang, Elixir, OTP and the BEAM vm. However, I only have very lightweight server needs for my SaaS, so it just doesn't make sense to switch to it, especially as my code is mostly client-based/typescript.

If my core value prop would be around real-time messaging or streaming data, BEAM/OTP would be my first choice.

Slightly OT: I'm still in dubio about Cloudflare pages, but I'm sure that the platform for the backend reboot that we're starting will be in Typescript. There's so much advantage in having one language for everything.

ToJans··on The Chandler Visual Programming Model
Tiny feedback that shouldn't take too long: I think a screenshot might help here...
ToJans··on Reactive Programming Without Functions
Layman's interprétation: Haskel's monads in a lisp like dialect?

Correct or not?

ToJans··on How to Start Google
I have a somewhat comparable history: I've taken a decade to get to the point where my bootstrapped SaaS ARR income is about to surpass my full-time consulting income.

It has taken about a decade of switching back and forth between consulting and working on the SaaS until I run out of money. Some consulting stints took a few months, others a few years, depending on our needs.

As I grew older, our needs and risk aversion in the family increased, so I just took on longer or more financially interesting consulting assignments, to grow a bigger buffer and allocate some extra assets.

I'm quite sure that, if I had just been consulting the last 15 years, I would already have been able to retire (owning more real estate and other assets).

However, my life would have been very different, and every single time I took on an ad interim assignment, I noticed the impact of my SaaS building experience was a big plus for my consulting assignments...

I'm not saying it's all rainbows & unicorns - building a SaaS is romanticized a lot, but IME it's an infinite game that requires a lot of grit, and as you grow you move the goal posts, so you're always in "hard" mode -, but I beg to differ that it has led to a more interesting life for me personally, as I tend to get bored quickly.

I have a few friends that built, sold, and could retire, but every single one of them has started building something new...

You need to love playing the game and be willing to sacrifice things, as the odds are typically against you.

To quote Simon Sinek "The only true competitor in an infinite game is yourself." [0]

[0] https://twitter.com/simonsinek/status/1433808001375277080?t=...

ToJans··on Optimize CSS with SAT Solving
Just an example of code that drives me nuts:

                <button
                  type="button"
                  className={clsx(
                    checked ? "border-2 border-primary-800" : "",
                    "flex touch-none flex-col items-center justify-between rounded border border-gray-100 bg-white hover:border-2 hover:border-primary-800",
                  )}
                >
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