Why Naming Functions Clearly Makes Code Easier to Read and Debug

A software developer reflects on the challenges of maintaining poorly written legacy code, particularly functions with vague names and multiple responsibilities. The article uses a real-world example of a bloated function called processData that mixed type-checking, image resizing, thumbnail extraction, and sorting without any clear indication from its name. The author argues that renaming and splitting such functions into smaller, single-purpose units dramatically improves code readability and debugging efficiency. Refactored code with descriptive function names like extractVideoThumbnail or sortByTimestampDesc allows developers to pinpoint bugs faster without wading through unrelated logic. The core principle advocated is that every function should have a name that reveals its intent and remain focused on exactly one job.