What are providers in Dart?

Providers allow to not only expose a value, but also create/listen/dispose it . When you place a Provider widget in your widget tree all the Childs of the Provider will have access to the values exposed by it. For this tutorial we will use a particular type of Provider: ChangeNotifierProvider.

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What is the stream in Flutter?

There are two types of streams in Flutter: single subscription streams and broadcast streams . Single subscription streams are the default. They work well when you’re only using a particular stream on one screen. A single subscription stream can only be listened to once.

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