Dart-1

Hello World : Command line

void main() {
  print("Hello, World!");
  // Ref: http://www.dart-tutorials.co.uk/#Tutorials/Getting-Started
  String a = "Hellow World 1";
   String b = 'Hello World 2';
   var c = "Hello World 3";
   print('$a');
   print('$b');
   print('$c');
   String a2 = "1";
   String c2 = "1";
   int b2 = 1;
   print(stringToInt(a2)==b2);
   print(a2==b2);
   print(a2==c2);
 }

 int stringToInt(String value) {
   return value.codeUnitAt(0)-48;
 }