Clean Code

Write clear names for variables, properties, classes, and functions, and spot common naming pitfalls. You’ll make code self-explanatory so readers don’t need extra mental decoding.

Decide when comments are harmful noise and remove them confidently. When a comment is truly useful, you’ll write the kind that adds value instead of repeating the code.

Use horizontal and vertical formatting to guide the reader’s eye through a file. You’ll structure code so important ideas stand out and related logic stays visually grouped.

Keep functions focused on one thing, control parameter counts, and use levels of abstraction to split logic into small, readable units. You’ll also write DRY code while avoiding unexpected side effects.

Replace deeply nested control structures with guards and extracted functions. You’ll also use errors and error handling as a cleaner alternative to sprawling if-chains.

Differentiate objects vs data containers/data structures and use cohesion to keep classes small and focused. You’ll apply the Law of Demeter and understand how SOLID supports clean, maintainable code.