guid-empty

void main() {
  final entity = Entity();

  print(entity is Disposable);
  print(entity is Clonable);
  print(entity is Comparable);
  print(entity is BaseEntity);
  //  entity.
}

guid-empty

void main() {
  final CustomStorage storage = SqlCustomStorage(Engine());

  print(storage.runtimeType);
  storage.foo();
}

class CustomStorage {
  final Engine engine;

guid-empty

void main() {
  final CustomStorage storage = CustomStorage();
  
  print(storage.runtimeType);
}

class CustomStorage {
  Engine engine;

  //  todo:

guid-empty

void main() {
  var tommorrow = new DateTime(2021, 02, 25).add(
    new Duration(days: 1),
  );

  print(tommorrow);

  /// альтернативный вариант
  tommorrow = DateTime(2021, 02, 25).add(
    Duration(days: 1),

guid-empty

void main() {
  final myList = [1, 2, 3];
  final myMap = {'key': 10};

  print(myList is Iterable);
  print(myMap.entries is Iterable);

  for (var i = 0; i < myList.length; i++) {
    print(myList[i]);
  }

guid-empty

void main() {
//    for (final current in 'Hello World!') {
//     print(current);
//   }

//   for (final current in StringIterable('Hello World!')) {
//     print(current);
//   }
}

guid-empty

void main() {
  final myList = [1, 2, 3];
  final myEmptyList = [];
  print(myList.runtimeType);
  print(myEmptyList.runtimeType);

  final myMap = {'key': 10};
  final myEmptyMap = {};
  print(myMap.runtimeType);
  print(myEmptyMap.runtimeType);

guid-empty

void main() {
  var someVariable = 365;
  someVariable = 366;

  const pi = 3.14159168;
  pi = 3.14;
}

guid-empty

typedef LoggerFunction = void Function(String messaghe);

void main(List<String> arguments) {
  void loggerFunction(String message) {
    print(message);
  }

  loggerFunction('Hello World!!!');

  if (loggerFunction is Function) {

guid-empty

void main(List<String> arguments) {

  void loggerFunction(String message) {
    print(message);
  }
  
  loggerFunction('Hello World!!!');
  
  if (loggerFunction is Function) {
    print('mmm, loggerFunction is function');