csharplang VS ASP.NET Core

Certain parts of Microsoft Learn are permissive, for example the .NET BCL documentation is Creative Commons Attribution: https://github.com/dotnet/dotnet-api-docs as is ASP.NET Core: https://github.com/dotnet/AspNetCore.Docs (a good hint if documentation is permissively licensed and on GitHub is if there's an edit button at the top.)

The C# language specification is unfortunately a bit fuzzier: https://github.com/dotnet/csharplang/discussions/4855

The updated unified C# language specification is CC, but it's still catching up to modern C#: https://github.com/dotnet/csharpstandard

No OP, but for example you still see the C# folks still struggling to add discriminated unions to the language because of complex interactions due to its too many features[1]. Virtual threads are easier to use than async/await is another example.

[1] https://github.com/dotnet/csharplang/issues/113

For example, C# had a research fork called Spec# that had compile-time support for contracts, with keywords such as requires (for arguments) and ensures (for return values), all the way back in 2004. While still being discussed, it doesn't seem to be shipping any time soon.

Hi there. I'm the language designer who created the 'Collection Expression' design/specification: https://github.com/dotnet/csharplang/issues/5354

You can see the entire history of the proposal there. To answer you specific question, we went with `..` because that's what the language already uses for the complimentary 'pattern matching deconstruction' form for collection patterns.

In other words, you can already say this today:

    if (x is [var start, .. var middle, .. var end]) { ... }

You must specify concrete type.

There was a plan to have "natural type" so "var list = [1,2,3]" would be of type "List" but it was postponed to C# 13 (https://github.com/dotnet/csharplang/issues/5354#issuecommen...)

While C# currently lacks direct support for this kind of functionality, there's a glimmer of hope with an active proposal under discussion that aims to bring this feature to the language. This potential addition promises a future where C# can natively offer similar robust type narrowing.

Given few people anticipated ValueTuple and C# adding a more direct tuple syntax, I feel like it is only a matter of time before C# adds discriminated unions.

(There are multiple proposals tracking the idea. This seems the most comprehensive and "central": https://github.com/dotnet/csharplang/issues/7016)

I always liked list abbreviations in python, but I absolutely love Linq. I believe there is a feature proposal for C# 12, which makes collection initialization better imo.

> Just .GetAwaiter().GetResult() it.

That won’t work with various synchronization contexts, where doing this would cause a deadlock. There’s not much fun in trying to debug such issues.

And now that various libraries only provide async api, or worse an non-async version wrapping the async one with . GetAwaiter().GetResult(), you’ll be in for a treat updating your dependencies.

Async all the way is the answer, although various frameworks still don’t offer async hooks. Recently I ran into this for example trying to write an async validator in blazor, but that’s not possible and you have to work around it [1].

C# 5 introduced async/await almost 12 years ago. And we’re still not “async all the way”.

[1]: https://github.com/dotnet/aspnetcore/issues/40244

This approach to organizing middleware enhances code readability, maintainability, and reusability. By following this encapsulation pattern, you're adhering to best practices in ASP.NET Core development, ensuring your application remains well-organized and scalable.

🌟.NET 9 Preview 2 ➡️.NET 9 Preview 2 Discussion ➡️ASP.NET Core updates in .NET 9 Preview 2 ➡️ASP.NET Core updates in .NET 9 Preview 2 Release Notes ➡️EF Core updates in .NET 9 Preview 2 ➡️.NET Aspire preview 4 - .NET Aspire

https://github.com/dotnet/aspnetcore/issues/50643

Even if you look at Microsoft’s by far most popular GitHub project, they’re still only half as big as SupaBase. If you believe “the SupaBase story”, SupaBase grew and became twice as large as Microsoft in 3 years. Below is their likes over time if you’re curious, together with a couple of additional “too good to be true” Silicon Valley projects.

https://github.com/dotnet/aspnetcore/issues/10117

To achieve these objectives, we will take inspiration from ASP.NET Core Identity's PasswordHasher class. It incorporates a concept of hash versioning, allowing only the number of iterations to be modified.

yes I watched several courses, may be aim not getting clearly. but i worked with asp.net which uses http call and firebase cloud function also which uses socket connection, for socket connection its makes sense to use observable bcoz there streams of data we can observe once the connection establish ,but for http it need to be call every time.