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Non-nullability C# compiler warning meanings and examples
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Basierend auf der SOC-Berufsklassifikation
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correct modelling of C# datastructures for maintainable code
Correctly call native (C/C++) libraries from .NET using P/Invoke and LibraryImport. Covers function signatures, string marshalling, memory lifetime, SafeHandle, and cross-platform patterns. USE FOR: writing new P/Invoke or LibraryImport declarations, reviewing or debugging existing native interop code, wrapping a C or C++ library for use in .NET, diagnosing crashes, memory leaks, or corruption at the managed/native boundary. DO NOT USE FOR: COM interop, C++/CLI mixed-mode assemblies, or pure managed code with no native dependencies.
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Microsoft code analysis CA warning meanings and examples
Routing guide for enabled compiler and analyzer warnings in this Bendex solution
| name | csharp-compiler-warnings |
| description | Non-nullability C# compiler warning meanings and examples |
CS)Use this skill for enabled C# compiler diagnostics that are not nullable-reference warnings. For nullable CS8xxx warnings, use ../nullability-warnings/SKILL.md.
CS0162 - Unreachable code detectedWhat it flags: The C# compiler reported code that is unreachable, unused, malformed, or inconsistent with language rules.
Example:
return, throw, or an always-false branch.CS0168 - Variable is declared but never usedWhat it flags: The C# compiler reported code that is unreachable, unused, malformed, or inconsistent with language rules.
Example:
catch (Exception ex) { LogFailure(); } without using ex.CS0219 - Variable is assigned but its value is never usedWhat it flags: The C# compiler reported code that is unreachable, unused, malformed, or inconsistent with language rules.
Example:
var result = Calculate(); and result is never read.CS0628 - New protected member declared in sealed typeWhat it flags: The C# compiler reported code that is unreachable, unused, malformed, or inconsistent with language rules.
Example:
protected void M() in a sealed class.CS1696 - Single-line comment or end-of-line expectedWhat it flags: The C# compiler reported code that is unreachable, unused, malformed, or inconsistent with language rules.
Example:
CS1998 - Async method lacks await operatorsWhat it flags: The C# compiler reported code that is unreachable, unused, malformed, or inconsistent with language rules.
Example:
async Task SaveAsync() { Save(); } with no await.async and return a completed task, or await real async work.