Coding
Best Practices
Pillars of code quality
All the developers need to understand the five pillars of code quality are:
- Readability
- Maintainability
- Efficiency
- Reliability
- Reusability
Coding best practices
Coding best practices are essential to writing clean, maintainable, and efficient code. A few important practices include:
Consistent Naming Conventions
Write meaningful names for variables, functions, classes, components, modules, folders, files, git repositories and branches.
Use case styles
- PascalCase for classes, components, modules (e.g., UserAccount).
- camelCase for variables and functions (e.g., customerName, getUsers).
- snake_case for constant, global variables (e.g., BASE_PATH).
- kebab-case for folders, files, git repositories and branches. (e.g., project-name).
Proper Commenting
- Inline Comments: Add comments to explain complex logic or important decisions within the code.
- Block Comments: Add block comments to describe the overall purpose of a code.
- Documentation Comments: Add comments to describe the purpose and usage of modules, classes, and functions.
Consistent Formatting
- Indentation: Use consistent indentation throughout your codebase (e.g., 4 spaces).
- Line Length: Keep lines reasonably short, typically around 80-120 characters.
- Spacing: Use spaces around operators and after commas to improve readability.
Readable Control Structures
- Clear Conditionals: Write conditionals that are easy to understand. (e.g., if count == 0 rather than if not count).
- Avoid Deep Nesting: Do not use deep nesting of loops and conditionals.
Modular Code
Small Functions and Methods: Break down your code into small, manageable functions or methods that do one thing well.
Avoid Hard-Coding
- Configuration Files: Use configuration files or environment variables for values that may change (e.g., API keys, database URLs).
- Constants: Define constants for fixed values and avoid using magic numbers or strings.
Follow to write optimization Code
- Avoid Over-Engineering: Do not use complex logic where a simpler solution will be there.
- Conditional Checks: Place conditions in a way that minimizes redundant checks.
- Re-use Computed Values: Store and reuse values that are computed multiple times.
- Minimize Loop: Reduce the number of calculations or function calls inside loops.
- Use Built-in Functions: Prefer to use built-in functions and libraries
- Avoid Repeated Concatenation: Avoid repeated string concatenation inside loops.
- Leverage Optimized Libraries: Use libraries and frameworks that are optimized for performance.
- Stay Updated: Keep libraries and dependencies updated to benefit from performance improvements and take advantage of new benefits.
- Batch I/O Operations: Group input/output operations to reduce the overhead.
- Asynchronous I/O: Use asynchronous I/O operations where possible to improve performance.
Memory Management
- Avoid Memory Leaks: Ensure that resources are properly released after use.
- Use Efficient Data Types: Use appropriate data types (e.g., using byte instead of int when storing small numbers).
- Cache Results: Store the results of expensive computations and reuse them when needed.
Optimize Network Usage
- Reduce Data Transfer: Minimize the amount of data transferred over the network.
- Compression: Use data compression to reduce the size of data being transferred.
Error Handling
- Defensive Programming: Handle potential errors and edge cases.
- Validate Inputs: Check for valid input values and handle invalid inputs appropriately.
- Check Return Values: Always check the return values of functions and handle errors.
- Error Handling: Use try-catch blocks or equivalent error-handling mechanisms to catch and handle exceptions.
- Meaningful Error Messages: Provide clear and informative error messages that help diagnose the issue.
Use plugins for perfect web development
- Prettier: The Prettier extension for Visual Studio Code brings about a seamless integration between the code editor and Prettier, allowing you to easily format code using a keyboard shortcut, or immediately after saving the file.
- ESLint: The ESLint extension for Visual Studio Code enables integration between ESLint and the code editor. This integration allows ESLint to notify you of problems right in the editor.
- GitLens: GitLens displays views containing essential repository data and information on the current file, such as file history, commits, branches and remotes.
- Code Spell Checker : Code Spell Checker” is an essential VS Code extension that enhances your coding experience. Seamlessly integrated into the editor, it diligently checks and corrects spelling errors, ensuring clean and error-free code.
- Auto Rename Tag : The extension works for HTML, XML, PHP, and Javascript, and removes the need to change your tag names twice.
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