aka The Bald Bearded Builder
Bringing smiles to the syntax — because laughter is the best error handler.
Learnings about .NET, JavaScript, Cloud, AI, and family.
Sealed looks like a tiny keyword, but it carries serious weight in modern .NET. This post explains what sealed does at class and member level, why the JIT can make sealed code faster, when you should not seal, and how to keep code testable with interfaces. You will see small, runnable examples and practical patterns that balance performance, clarity, and flexibility.
Exceptions are powerful for diagnostics but expensive in tight loops and high traffic code. This post explains what the runtime does when you throw, why that cost adds up, and when exceptions are the right tool. You will see small, runnable C# examples that model expected failures with Try, Result and tuples, plus a minimal API that returns HTTP results without throwing. We will also cover a micro tip for library authors to keep fast paths fast.
Time bugs are sneaky and expensive, but they do not have to be. This post shows a practical UTC first approach for ASP.NET Core using DateTimeOffset and TimeZoneInfo. You will learn how to design your data model, return UTC from APIs, convert to a user’s local time, and avoid DST traps without hard coded offsets. We will also wrap conversions in a clean service and make time testable with TimeProvider.
Join me for live coding sessions where I'm building Microsoft PowerToys. We laugh, we learn, and occasionally we break things spectacularly.
Tutorials, live coding, and tech discussions on YouTube
