Becoming a better developer: explain your decisions

A working code fragment is not the end of a review. Another developer maintaining the behaviour also needs to understand the decisions and their basis.

Describe behaviour rather than labels

Instead of saying only “refactored”, explain what changes under a concrete condition. Preserving form text when an external service fails is an observable result. Build the technical explanation around that behaviour.

Keep assumptions limited

State which inputs a component expects and rejects. Make its responsibility boundary explicit rather than assuming the whole system behaves identically. Clear inputs and outputs make reuse easier to assess.

Match verification to risk

Changing a visual gap and changing an access check need different levels of review. Behaviour affecting records, permissions or payments calls for stronger validation. Ask what an incorrect result would affect.

Leave a useful handover note

What changed, why and under which conditions was it checked? Give short, concrete answers. Avoiding the need for the next maintainer to rediscover the decision is part of good maintenance.