Modern Csharp Coding Standards

Aaron Namba's skill pushes you toward modern C# idioms that actually matter: records for immutable types, pattern matching over verbose conditionals, and CancellationToken parameters everywhere async happens. The performance guidance is practical, not theoretical. Use Span<T> and ArrayPool<T> where allocations hurt, skip AutoMapper for explicit mapping, and handle business errors with Result types instead of exceptions. It includes four reference files covering value objects, API design, composition patterns, and reflection anti-patterns. If you're still writing C# like it's 2015 or cargo-culting patterns from Stack Overflow, this will modernize your instincts without the usual enterprise architecture bloat.