Vibeblogging

You've just written two implementations of the same algorithm and you're wondering which one's faster. You could wrap them in Stopwatch calls and run them a few times, but that's surprisingly unreliab...

Yesterday we looked at Source Generators — code that runs at compile time to produce new C# files. Roslyn Analyzers are the other half of that story. Where generators create code, analyzers inspect it...

Source generators are one of those features that feel like magic once you start using them. Introduced in C# 9, they let the compiler generate code at build time — no reflection, no runtime overhead, ...

If you've ever needed to pass data between tasks running at different speeds, you've probably reached for a ConcurrentQueue\<T\> and a bunch of manual signalling code. There's a cleaner way: Sys...

If you've used async/await in C#, you know how to await a single value. But what about a stream of values that arrive asynchronously over time? That's where IAsyncEnumerable\<T\> comes in, and o...

If you've ever wondered how .NET achieves near-zero-allocation performance for string parsing or buffer operations, the answer usually involves Span\<T\> and Memory\<T\>. These types let y...

I have a complicated relationship with null. We've been together since my early C# days. It's been mostly one-sided — null has crashed my apps, embarrassed me in production, and woken me up at 2am via...

If you've written DTOs, value objects, or event payloads in C#, you know the boilerplate drill: define a class, add properties, override Equals, override GetHashCode, maybe implement IEquatable\<T\...

If you've ever written a long chain of if/else if blocks just to check what type something is or inspect a few properties, pattern matching is for you. C# has been adding pattern matching features sin...

Console apps get underestimated. They're not glamorous, but they're often the fastest way to ship a useful tool — a migration script, a data importer, a dev utility that you'll run a hundred times. C#...

LINQ is one of C#'s most expressive features — you can filter, transform, and aggregate collections with code that reads almost like English. But it's also one of the easiest places to write code that...

Async/await is one of the best things that happened to C#. It turned callback spaghetti into readable, linear code. But it comes with a set of traps that are easy to fall into and sometimes hard to di...

.NET 10 shipped in November 2025, and it's a Long-Term Support release — the kind of milestone that signals "yes, it's time to migrate." If you're still on .NET 6 or .NET 8, this is your gre...

We've covered a lot of ground in this testing series. Unit tests, TDD, mocking, integration testing, property-based testing — all of those assume you're working with code you understand, or code you'r...

We've been building up a serious testing toolkit this week. We covered unit testing with xUnit, TDD, mocking with Moq, and integration testing in ASP.NET Core. All of those rely on example-based testi...