LowFile-scopeC# Plug & play

Remove unreachable code

Delete dead code and after-return/throw statements that never execute.

Why this matters

Reduces noise and avoids misleading readers and analyzers.

Side-by-side examples engineers can pattern-match during review.

Avoid

return x; Console.WriteLine("after return");

Prefer

return x; // removed unreachable line

Bad

throw e; DoMore();

Good

throw e; // no more code

From the same buckets as this rule.

Critical
Avoid Duplicating String Literals
Store repeated string literals in constants or variables to improve maintainability and reduce redundancy.
duplication-complexitymaintainability
Critical
Avoid Empty Methods
Detect methods that have an empty body. If a method is empty, ensure that a comment is present explaining why it remains unimplemented.
maintainabilityreadability-refactor
Critical
Avoid modifying built-in prototypes
Detect modifications to built-in prototypes. Modifying built-in objects can lead to compatibility issues and unexpected behavior. Recommend creating helper functions instead.
maintainabilitysecurity-hardening