How does an inherited widget work?

InheritedWidget is a base class that allows classes that extend it to propagate information down the tree efficiently. Basically, it works by notifying registered build contexts if there is any change . Therefore, the descendant widgets that depend on it will only be rebuilt if necessary.

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What is scaffold widget?

A Scaffold Widget provides a framework which implements the basic material design visual layout structure of the flutter app . It provides APIs for showing drawers, snack bars and bottom sheets. Have a look at its constructor and the properties it has.

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