Modern C# (C# 14 / .NET 10)

Core Principles

1. Use the newest stable features — C# 14 is the target. Prefer language-level constructs over library workarounds.
2. Readability over cleverness — Pattern matching and expression-bodied members improve readability when used appropriately; deeply nested patterns do not.
3. Value types where possible — Prefer record struct, Span<T>, and stack allocation to reduce GC pressure.
4. Immutability by default — Use record, readonly, init, and required to make illegal states unrepresentable.

Patterns

Well-Known Features Quick Reference