2-3-types-5.md

void main() {
  //a
  Set mySet = {'Москва', 'Вашингтон', 'Париж'};
  mySet.add('Вашингтон');
  //b
  print('MySet length ${mySet.length}');
  // In set we can add only unique element.
  
  //c
  String text = 
  """
  She sells sea shells on the sea shore;
  The shells that she sells are sea shells, I’m sure.
  So if she sells sea shells on the sea shore,
  I’m sure that she sells seashore shells.
  """;
  var formatText = text.trim().replaceAll("\n", "");
  var word = formatText.split(' ');
  print('Word count: ${word.length}');
}

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