first Dart var exploration

main.dart

void main(){
 
  var country = 'United States';
  String name;
  var dynamo;
  var preType = dynamo.runtimeType;
  print(preType);
  //print(name is dynamic);
  //looks like everything is dynamic?!?
  dynamo = 47;
  var type = dynamo.runtimeType;
  print(type);
  print(dynamo is String);
  dynamo = 'dynamic!';
	print(dynamo is String);
  name = '1';
  print(name);
  print('Hello ' + country);
  print('7.23');
  double fraction = 23;
  fraction += 0.00;
  fraction = 23.00;
  //only upon adding a decimal will it print the tenths/hundredths 
  print(fraction);
  print(fraction.runtimeType);
  fraction += .5;
  //interesting that a single var has dynamic typing
  print(fraction.runtimeType);
  print(fraction);
}