name: self-documenting-code-checklists description: Use this skill when writing, reviewing, or refactoring code to ensure it is self-documenting. Apply these checklists to routines, data naming, data organization, and overall code layout to improve code clarity and maintainability without relying on comments.

Self-Documenting Code Checklists

Self-documenting code communicates its purpose through clear naming, structure, and organization rather than through comments. Use these checklists to evaluate and improve code clarity.

When to Use

• Writing new routines, functions, or methods
• Conducting code reviews
• Refactoring existing code for maintainability
• Evaluating code quality and readability

Routine Design Checklist

Apply this checklist when designing or reviewing functions, methods, and subroutines:

• Naming accuracy: Does the routine name accurately describe what it does?
• Single responsibility: Does the routine perform one well-defined task?
• Modularity: Have all parts that could benefit from being independent been extracted into their own routines?
• Interface clarity: Is the routine's interface obvious and clear?

Action: If any item is "no," refactor the routine.

Data Naming Checklist

Apply this checklist when declaring or naming variables, constants, and types:

• Type descriptiveness: Is the type name descriptive enough to help document data declarations?
• Variable naming: Are variables named well?
• Purpose consistency: Is each variable used only for the purpose its name indicates?
• Loop counters: Do loop counters use more informative names than i, j, k?
• Enumerated types: Are well-named enums used instead of ad-hoc flags or booleans?
• Named constants: Are named constants used instead of magic numbers or magic strings?
• Naming conventions: Do naming conventions distinguish between type names, enums, named constants, local variables, class variables, and global variables?

Action: Rename variables or introduce constants if magic numbers or ambiguous names are found.

Data Organization Checklist

Apply this checklist when organizing data access and structures:

• Helper variables: Are additional variables used where needed to improve clarity?
• Reference locality: Are references to variables grouped together?
• Type simplicity: Are data types simple to minimize complexity?
• Abstract access: Is complex data accessed through abstract access routines (abstract data types)?

Action: Refactor data structures or introduce intermediate variables to simplify logic.

Layout and Design Checklist

Apply this checklist when reviewing code layout or high-level design:

• Logical layout: Does the program's layout display its logical structure?
• Directness: Is the code straightforward, avoiding "clever" tricks?
• Hidden details: Are implementation details hidden as much as possible?
• Domain terminology: Is the program written using problem-domain terminology rather than computer science or programming language terminology?

Action: Format and simplify code if it is too "clever" or the layout is confusing.