mrsmrtss

JavaScript didn't "win" because it was a good language (it is not), it "won" because it was the only language that ran in the browser.

Agreed on async. You better know if a function does IO, hiding that can lead to nasty surprises.

> JavaScript is faster than C#

Are you joking? C# is in another leage, when we talk about performance.

That's not how TDD works. You test the whole chain and all the components with tests and you can move from top to bottom with TDD, it's actually how you should do it.

> while if you wrote it exactly like Java, you'd probably end up with slower code.

That's not the case for some time already, at worst you get similar performance with Java and with a little effort you can get significantly better performance.

I don't get what the big problem is with function coloring. You basically only need async when doing IO, and you had better know when a function does it, or you may have a bad surprise at some point in the future.

Maybe startup time was a problem before AOT?

So you try to say that Java gets to be more semantically sound by making bad choices early on? That does not make sense. Those choices are very difficult fix today and many of them can't be fixed. Say what you want but semantically more sound Java won't be. And the boxing with C# unions can and will be addressed later, this was a deliberate choice by the team to bring unions earlier.

For almost 10 years now, we have not published anything .NET to the Windows platform. .NET is more performant on Linux today than Windows, and I would say development is also better there (using Rider). However, we do still have devs who prefer Windows. We have built many critical systems on .NET and they just work, so they may be boring to some of the folks who like to have more excitement from their systems.

As if C# is Windows only? Today C# runs also almost everywhere.

C# (.NET) would probably be the winner here. Go standard library is rather minimalistic compared to it.

Fun it is not.

    if err != nil

It's amazing how they managed to design a new language with all the flaws of '90s languages.

C# will have more advanced sum types this year, it's currently in preview.

Well, C# has more powerful pattern matching, only compiler exhaustiveness on types is missing today. In Java, sum types (sealed interfaces/classes) require all members to have the same parent, so they can be used only in very narrow cases.

Reified generics, value types, nullable reference types, LINQ are only some of the things that would give C# an edge in DevEx today.