.NET 10

That's a lot of goodies in a new release! It seems it is outpacing the JVM's development...

Apart from [the equivalent of] records, I see nothing big.

Except...

this '''let! a = fetchA() and! b = fetchB()''' really puzzles me. Does C# have a high-level syntax for concurrency timing? [something that Java is strongly lacking, and that Typescript did solve with Promise.all(), which is an ugly syntax, from my perspective]

Any elaboration on this is very welcome.

Here `a` and `b` can have different types:

    let! a = fetchA() and! b = fetchB()

Whereas `Promise.all` usually requires all promises to have the same type (returning a `List<T>` or even a `List<obj>`) .

See https://learn.microsoft.com/en-us/dotnet/fsharp/whats-new/fs...

Actually, TypeScript's `Promise.all` can handle different types too.

    const [a, b] = await Promise.all([fetchA(), fetchB()]); // => a: A, b: B