Sample code demonstration Interfaces and Mixins in Dart

interfaces-and-mixins.dart

void main() {
  var pixel = Phone('Pixel XL', 'Google');
  pixel.getDeviceInfo();
  pixel.getAllFeatures();
}

class FeaturesMixin {
  bool blueTooth = true;
  bool dualSim = false;
  bool NFC = true;
}

mixin UtilitiesMixin on FeaturesMixin {
  bool flashlight = true;
  bool calculator = true;
  bool thermometer = false;
  
  String _has(bool feat) => feat ? 'Yes' : 'No';
  
  void getAllFeatures() => print('''
  -- FEATURES --
  
  BlueTooth: ${_has(super.blueTooth)}
  Dual SIM: ${_has(super.dualSim)}
  NFC: ${_has(super.NFC)}
  Flashlight: ${_has(flashlight)}
  Calculator: ${_has(calculator)}
  Thermometer: ${_has(thermometer)}
  
  ===
  '''); 
}

abstract class Device {
  String model;
  String manufacturer;
  void getDeviceInfo();
}

class Phone with FeaturesMixin, UtilitiesMixin implements Device {
  String model;
  String manufacturer;
  
  Phone(this.model, this.manufacturer);
  
  void getDeviceInfo() => print('''
  ===
  
  Device name: $model
  Manufactured by: $manufacturer
  ''');
}