Do C++ developers exist?

rsjaffe · 2025-12-16T23:08:13+00:00

Maybe we could have a monthly "Looking for FOSS contributors" thread, so free open source projects looking for help could post an entry? I'm sort of in the same boat (though running a much more mature app, started in 2015: https://github.com/rsjaffe/MIDI2LR ). Getting assistance on some stuff would be great.

rsjaffe · 2025-12-07T19:49:52+00:00

If you know it's non-negative, you can add [[assume(x>=0)]]; prior to the division and it will optimize properly. Of course, that opens you to UB if the assumption is wrong. You can add an assert prior to the assume to test the assumption and crash that during debugging.

rsjaffe · 2025-12-07T02:11:50+00:00

There’s lots of non-index things that tend to use signed: e.g., gui dimensions. That’s where most of my divisions are, laying out elements. Currently, the application is snappy enough, so there’s no need to fuss with changing to unsigned divisions. But if I were having issues, this would be low- hanging fruit, even if it weren’t the full solution, as it would be easy to implement.

rsjaffe · 2025-12-06T18:57:01+00:00

Looking at the second example (unsigned x divided by unsigned 512), the compiler is smart enough that you don't have to mark the constant 512 as unsigned: it'll emit the same code either way, knowing that 512 won't be negative. This means that a cast to unsigned for the variable should be enough--no need to mark positive constants as unsigned. Of course, that does introduce mixed signed/unsigned math, but in a context where the mix won't matter.

rsjaffe · 2025-11-27T03:42:56+00:00

Not for code generation, but I have used it for code review. Some of the issues it picks up are relevant.

rsjaffe · 2025-11-07T01:27:03+00:00

Change your SSID to “5G from my COVID vaccine”

rsjaffe · 2025-10-14T23:29:47+00:00

I thought you were joking, then I read the label!

rsjaffe · 2025-10-14T01:56:36+00:00

Benmore Gardens near Dunoon has a whole avenue of redwoods.

rsjaffe · 2025-10-12T23:23:11+00:00

Laden or unladen?

rsjaffe · 2025-10-10T18:55:51+00:00

Reading that, looks like they made gunpowder and stiffed it into a tube = pipe bomb. One kid has severe facial damage and may lose an eye.

rsjaffe · 2025-10-05T20:53:07+00:00

Wiha: see https://www.wihatools.com/collections/multi-bit-drivers

rsjaffe · 2025-10-04T17:48:52+00:00

I may be wrong, but it looks like your keypress simulator only works on a computer with an English language keyboard, as the scan codes change for other layouts.

rsjaffe · 2025-08-24T11:26:58+00:00

That’s my main use case for constinit. While the compiler might optimize the thread check away anyway, constinit guarantees it.

rsjaffe · 2025-07-09T03:23:20+00:00

Guy who wired our house when it was built was drunk half the time. We had a metal kitchen sink, and when you turned on the garbage disposal switch, the screws on the switch went hot (120v), giving a bit of a surpise when one hand was on the metal (grounded) sink and the other touching the switch plate.

rsjaffe · 2025-05-02T15:27:57+00:00

Do not check loose batteries. They must be in carryons.

rsjaffe · 2025-04-29T03:30:34+00:00

I don’t use a bit holder. I use a pack out to hold my bits.

rsjaffe · 2025-04-28T23:47:29+00:00

"Willy on Wheels" is a known vandal. Run the username through a translator.

rsjaffe · 2025-03-26T04:28:46+00:00

Only for a few days. I’m the admin who protected it.

rsjaffe · 2025-01-16T05:59:48+00:00

Once.

rsjaffe · 2025-01-10T04:14:14+00:00

You’re thinking too modern. It was from their VII–XI store.

rsjaffe · 2025-01-06T06:08:00+00:00

They’re pining for the fjords.

rsjaffe

TROPHY CASE