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csharp-pro

combined

Write modern C# code with advanced features like records, pattern Write modern C# code with advanced features like records, pattern matching, and async/await. Use for version-compatible .NET implementation and evidence-based testing/performance review.

When to use

• Working on csharp pro tasks or workflows
• Needing guidance, best practices, or checklists for csharp pro
• Implement or review C#/.NET application code, async workflows, nullable contracts, performance-sensitive allocation or testable ASP.NET/EF boundaries.

When not to use

• The task is unrelated to csharp pro
• You need a different domain or tool outside this scope
• This single-file guide is the available local procedure; no external reference pack or implementation-playbook is bundled or required. Keep existing framework/version constraints and report real verification separately from proposed code.
• Do not treat the output as a substitute for environment-specific validation, testing, or expert review.
• Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.

Skill page

Conflict

The two copies share the same core C# expert persona, focus areas, and output list, but they disagree on the primary approach. The rmyndharis copy is a general best-practice guide that encourages leveraging modern features. The sickn33 copy adds critical constraints: it requires checking the actual project/runtime version before choosing features, distinguishes between proposed optimizations and measured BenchmarkDotNet results, and includes a 'Limitations' section that the other lacks. Crowning one would hide the version-compatibility and evidence-based constraints of the other.