Flutter Modena Dart Examples

example.dart

// abstract classes and generics just like in any "real" OOP language
abstract class Accumulator<T> {
  void add(T el);
  void printState();
}

class ListAccumulator<T> extends Accumulator<T> {
  // constructor with implicit initializers!
  ListAccumulator({this.state = const []});

  List<T> state;

  @override
  void add(T el) {
    state.add(el);
  }

  @override
  void printState() {
    // iterate over arrays just like in any modern language
    for (var el in state) {
      print(el);
    }
  }
}

// first-class functions and variables just like in C, C++ or JS!
const evil = false;
void main() {
  var acc1 = ListAccumulator<String>(
      state: [
        // if-else inside list literals!
        if (!evil)
          "Ciao"
        else
          "Odio",
        "Flutter",
        if (!evil)
          "Modena",
      ]);
  acc1.printState();
  
  var acc2 = ListAccumulator<String>();
  acc2.add("Ciao!!!");
}