Hot reload works by injecting updated source code files into the running Dart VM (Virtual Machine). This doesn’t only add new classes, but also adds methods and fields to existing classes, and changes existing functions. Hot restart resets the state to the app’s initial state.
If you like this question & answer and want to contribute, then write your question & answer and email to freewebmentor[@]gmail.com. Your question and answer will appear on FreeWebMentor.com and help other developers.