Modern C# Techniques for Performance and Code Quality

Short summary

Modern C# developers use pattern matching, records with `with` expressions, ReadOnlySpan<T> for allocation-free performance, primary constructors with required members, async iterables for lazy evaluation, local functions, and source generators to eliminate boilerplate. Concrete wins include 18% Azure cost reduction, shorter code reviews, eliminated immutability bugs, and significant productivity gains from automated repetitive tasks.

• •Pattern matching and records reduce complex logic to elegant expressions while preventing immutability bugs
• •ReadOnlySpan<T> and async iterables minimize memory allocations; Azure costs dropped 18% after one refactor
• •Source generators, primary constructors, and local functions eliminate boilerplate code and visual clutter

Generated with AI, which can make mistakes.