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Flutter Dev Tutorial: Turn ScrollController Into a Reactive State Machine Using CubitSignalMixin

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A developer tutorial published on DEV Community explores how to eliminate third-party infinite scroll packages in Flutter by transforming ScrollController into a reactive state machine. The article, the second in a series, builds on earlier work showing how BlocSignal solves race conditions during rapid list scrolling without relying on Rx streams. It highlights how popular pub.dev pagination packages often introduce architectural problems, such as proprietary widget wrappers and competing state controllers that conflict with existing BLoC setups. The core challenge addressed is Dart's single-inheritance constraint, which historically prevented ScrollController from also acting as a CubitSignal or BlocSignal. The tutorial introduces CubitSignalMixin and BlocSignalMixin from the bloc_signals package as a way to bypass this limitation through composable mixins.

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Flutter Dev Tutorial: Turn ScrollController Into a Reactive State Machine Using CubitSignalMixin · ShortSingh