Summarize What a Function Does [DI15] [WHAT]

A summary doesn’t have to be long - it can be as short as a single sentence. The following shows several concise summaries for various function signatures (documentation for other things like parameters are important but omitted here - we’ll get to those later):

If you can concisely, clearly, and accurately describe a function in a single sentence, that is often a good sign of its simplicity, cohesiveness, and understandability to others.

However, if you’re struggling writing a concise and easily-understandable overview for a function, that’s a warning sign that it might be too complex or you lack sufficient understanding of its role in the broader codebase. Revisit the design, refine your understanding, and simplify if needed.