Dart class

The cascade notation (. .) in Dart allows you to make a sequence of operations on the same object (including function calls and field access). This notation helps keep Dart code compact and removes the need to create temporary variables to store data.

Cascade notation is syntactic sugar in Dart that allows you to make a sequence of operations on the same object. You can use the “double dot” to call functions on objects and access properties . This “operator” is simply used to make your code cleaner and concise.

Two dots is an informal and cute way of implying there is something else to say , except philosophically you don’t need to say it at that moment, so it’s more of a short-cut, and yes two dots is quicker that three since the latter means something else, formally any-way.