Oncecall

Oncecall is a memoization tool for use in the build method of Widgets.

Installation

Run the following command:

dart pub add oncecall

Or add to your pubspec.yaml file:

dependencies:
  oncecall: latest

Usage

class MyWidget extends StatelessWidget {
    const MyWidget({super.key});

    Widget build(BuildContext context) {
        final value = oncecall(context, () {
            // This function will only be executed once, even if the widget rebuilds
            return expensiveComputation();
        });

        return OtherWidget(value);
    }
}