Přemek Vysoký

Principal Software Engineer @ .NET Engineering / Microsoft · Opinions are probably stolen

[Přemek Vysoký @premun_]

@valigo The only explanation is - you're the mid:
- Bad ones come → you can spot them as you're better
- Top → you can tell they're better
- Mid → you see them as equal, but you think you're top, so you assume them too.

This way you spot no mid ones.

Q.E.D.

[Julien Couvreur @jcouv]

We merged an early C# 15 preview feature into .NET 11 preview 5: closed class hierarchies.

Allows a `closed` modifier on a `class` declaration.
A `closed` class prevents direct inheritance from other assemblies, so pattern matching can treat its derived types as a complete set.

[Přemek Vysoký @premun_]

@glasgreat @zacbowden What's wrong with Edge?

[Přemek Vysoký @premun_]

@Dadka12345678 @RaskanLp @VyvleckovaM @AndrejBabis Reagovala jste na můj komentář, kde říkám, že by radši měl dělat práci, za kterou placenej je, a kterou mimochodem nedělá, práci poslance. Měl asi jeden výstup v PS, hlasoval asi tak ze 40% a nic dalšího tam z něj nevypadlo.

[Přemek Vysoký @premun_]

@Dadka12345678 @RaskanLp @VyvleckovaM @AndrejBabis Poslanci ČR mají minimálně 106 000 Kč měsíčně:
https://t.co/HhVQPJOHCs

[Přemek Vysoký @premun_]

@Dadka12345678 @VyvleckovaM @AndrejBabis Poslanec ČR, má za to přes kilo. Oba.

Ale to víte, jen trollíte.

[Přemek Vysoký @premun_]

@Dadka12345678 @VyvleckovaM @AndrejBabis A neměl by spíš dělat v tom čase práci, za kterou placenej je?

[Přemek Vysoký @premun_]

@vzarytovskii npm install -g glibc

[Přemek Vysoký @premun_]

@KooKiz This is probably because NUnit's setup methods are not ctors. So while your test will have your field initialized, the C# analyzer doesn't know that. You'd either have to make it nullable and if over it totally or.. do this.

NUnit is not very C#ey unfortunately.

[Julien Couvreur @jcouv]

We merged an early C# 15 preview feature into .NET 11 preview 3: unions.

Adds union declarations (`union Pet(Cat, Dog, Bird) { ... }`) and union types (attributed with `[Union]`).
They can be treated by pattern matching/switch expressions as a closed set for exhaustiveness.

[Přemek Vysoký @premun_]

@devinbgoble @McClellandRuss Can you estimate your team's velocity? Do you know how much you get done in a month?
Do you know how fast people on your team work?
If you do all of the above, why not just get these numbers out cheaply by chunking your work by time?

[Přemek Vysoký @premun_]

@avrldotdev @Adriksh Do you mean the part where you can point at any address and pretend that it contains whatever you feel like or the parts with undefined compiler behavior?

[Obie Fernandez @obie]

Software craftsmanship is over.

The industrial age of programming is here.

[Přemek Vysoký @premun_]

@KooKiz It's so refreshing to hear about examples of direct benefits of using the right data structures in the right situations when it actually matters

[Přemek Vysoký @premun_]

In 2025, Microsoft employees donated $255.6M and over 1.2M volunteer hours, supporting 36,500 nonprofits in 110 countries.

https://t.co/qJ9QyvnSkI

[Přemek Vysoký @premun_]

@DemetreeKaller1 @JonathanPeppers This has been the release cycle since .NET 5. Monthly previews starting February until summer, then some RCs and a GA release in November

[Přemek Vysoký @premun_]

Just a regular day at work these days

[Přemek Vysoký @premun_]

Is there a way to trim the list of startup projects in VS?

Most of there are libraries and test projects which I will never want to launch.
It's a bit tiresome to fish for the one or two CLI/API projects in a sea of non-runnables

@mkristensen?

[Přemek Vysoký @premun_]

@GodOfTweets Criticizing, sure. Disregarding while there's millions of counterexamples of it being useful, I don't know..

[Přemek Vysoký @premun_]

My whole career I've been meeting devs with strong edgy negative opinions about tools they've been using. I always thought they had some innate insight and saw through something.

Today, I'm of the opinion they just couldn't utilize tools to their max including their weak spots.

[notch @notch]

Reminder that using AI to write code is an incredibly bad idea still, and anyone advocating for it is either incompetent or evil.

It's just as dumb as letting AI write the laws. It's about logic, not about typing.

[Přemek Vysoký @premun_]

@Tynach @nickycakes @notch Thx for the explanation and also staying civil.
I don't work on/know the story with Windows.. or how many bugs you can attribute to AI. I wouldn't say it's a lot.

These are quite bold conclusions people jump to. A part of life, I guess?
Not much to do with my claim though..