HighFile-scopeC# Plug & play

Use `readonly` or `const` for Immutable Data

Ensure that immutable instance fields are marked as `readonly`, and compile-time constants are marked as `const`.

Why this matters

Mutable fields can lead to unintended modifications. Use `readonly` for instance fields and `const` for compile-time constants.

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

Avoid

public int MaxValue = 100;

Prefer

public const int MaxValue = 100;

Bad

public int MaxValue = 100;

Good

public const int MaxValue = 100;

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