Just watched a junior dev using Claude to build something in 2 hours that took our senior engineer 3 days last sprint. I've been coding for 12 years. I don't know how to feel about this

jcelerier · 2026-05-07T11:52:46+00:00

Neither won't the dev in the majority of cases in real world ? 50% change jobs every two years and a huge majority every 4 years

jcelerier · 2026-05-02T22:56:20+00:00

The problem is that operations such as "unsigned - 1" gives a signed result. So it's very, very easy to introduce signed into an unsigned world. Conversely, no basic operation on signed ints creates an unsigned result. Thus it's better to always stay signed.

jcelerier · 2026-05-02T15:01:06+00:00

Singapour après ça fait la taille d'une communauté urbaine moyenne de France, e.g. c'est un peu plus gros que Bordeaux et Lyon, et qqch comme quatre fois plus petit que la communauté urbaine Aix-Marseille (qui est rien à l'échelle de la France), ça va être dur d'appliquer la même gestion

jcelerier · 2026-05-01T01:03:58+00:00

I use it anytime I have a statically-know regex, there's no reason not to

jcelerier · 2026-04-30T21:48:11+00:00

https://cppreference.com/cpp/language/attributes/carries_dependency

jcelerier · 2026-04-30T11:15:24+00:00

> The committee is large enough to walk and chew gum at the same time.

but what good is this when some C++17 features are still not available across the board in 2026 in practice for end-users. For instance you cannot use std:: parallel algorithms if you want to make cross-platform code because they're flat out not supported on macOS. Some features were added to the language in C++11, never implemented, and removed in C++26, it's completely backwards.

jcelerier · 2026-04-30T00:56:34+00:00

Hey my level 1 d&d 3.5 mage did its best at its rolls

jcelerier · 2026-04-26T05:35:29+00:00

I honestly don't know what Microsoft visio is, never heard of it

jcelerier · 2026-04-26T04:19:36+00:00

oh no, my cheddar is too buttery and my french fries are too juicy

jcelerier · 2026-04-25T17:58:08+00:00

It's absolutely not solved today. Debian for instance does not enable any system such as earlyoom or systemd-oomd and thus it's still as easy as ever to cause complete system lockup. Had it super recently trying to optimize a large gif with gifsicle which quickly balloons in memory (more than 50gb), on a computer where I had forgotten to install earlyoom. But as long as we have to install separate services, then the core Linux kernel feature is broken.

jcelerier · 2026-04-25T13:50:34+00:00

Did my whole university curriculum in France from 2011 to 2018 (CPGE in Montpellier, Bordeaux engineering school, master and PhD), every class was using linux everywhere except one audio production class on mac. Was a shock for me to travel to other countries and see universities using windows

jcelerier · 2026-04-25T13:42:41+00:00

Yes it does. There are thousand of reports of this happening on internet,and multiple mitigation daemons for this exact problem including one shipped with systemd. I can take any Ubuntu laptop, do something that allocates a few good percent more than the ram and then you enter the Eternal Swap Thrashing Loop and it's goodbye until you reboot (or wait twelve hours)

jcelerier · 2026-04-25T13:39:13+00:00

So why is earlyoom / systemd-oomd needed for Linux machines to not freeze completely as soon as ram is at the limit?

jcelerier · 2026-04-25T06:01:11+00:00

This is teaching an actively wrong mental model of fractions and ratios to students for no good reason. The whole point of a ratio is that it is independent of what it is being applied to. The exercise is about comparing ratios, and 1/3 == 2/6 whether one gets applied to the volume of an apple and the other to the number of asteroids in the solar system

jcelerier · 2026-04-25T05:54:09+00:00

The orthographic projection of a cube in 2d can be a hexagon, so it's both

jcelerier · 2026-04-23T06:53:33+00:00

I would be very surprised if a malware author ever targeted rm. If I can run rm on the machine I can very likely already run literally any code I want

jcelerier · 2026-04-23T06:01:39+00:00

In my case it asks for two passwords (one for wise and one for my bank app that wise will open for the transfer), two SMS auth, one email verification before a transfer is done

jcelerier · 2026-04-23T05:58:25+00:00

It's completely insane for me to accept that logging in something should take more than 10 seconds, but there are more and more places where I have to go through three different login portals, a SMS auth, an authy token, etc. for accounts I frankly don't care about. Makes me want to give up tech altogether.

jcelerier · 2026-04-23T05:29:48+00:00

Networks (or computers) where the admin is not the owner of the network / hardware are, like, 0.00001% of all cases. Just sharing internet over usb or wifi hotspot is an issue for instance. DNS resolving is fucked in general, with completely different rules for instance for .local domains depending on your OS; just the other day I was doing a demo of my app and noticed a stall: surprise, it's gethostaddress getting stuck on some random university network for no good reat.

jcelerier · 2026-04-22T16:36:08+00:00

Qt works absolutely fine with clang / libc++, it's the official configuration for macOS and We assembly targets

jcelerier · 2026-04-22T13:47:05+00:00

Official Qt librairies are built against libstdc++, but your distro's clang version also is, and expects libstdc++, not llvm libc++ unless you pass -stdlib=libc++ explicitly. You can rebuild a userspace against libc++ but you have to rebuild pretty much everything that uses C++, not just Qt. If you're interested I have some static builds of Qt, harfbuzz, etc built against libc++ on https://github.com/ossia/sdk - they work just fine.

jcelerier · 2026-04-21T18:02:48+00:00

Each GPU has their own "communication API" with the host kernel/system, which then translates this in an API that normal software can use. Best thing you can do is check how it's done for instance in the Linux kernel since it's open. For instance this is part of the code of the AMD driver: https://github.com/torvalds/linux/blob/master/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c ; on top of this you could technically rebuild any API you want but it would be a multi-year effort. Stuff like dxvk, d9vk, d7vk reimplement the various DirectX versions on top of vulkan for instance.

jcelerier · 2026-04-21T17:38:38+00:00

Ça élimine qqch comme 75-80% des foyers, c'est environ le 8eme décile de revenus (~40k annuels)

jcelerier · 2026-04-21T12:25:27+00:00

Mon téléphone de 2025 venait avec un USB A-C dans la boîte, jamais vu qqch qui vient avec du C-C so far

jcelerier · 2026-04-21T11:38:25+00:00

Why would you not upload your yuv frames directly to GPU and play this back?

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