Dart Samples

dynamic_keyword.dart

void main() {
 /// dynamic is a special type indicating it can be any type.
  dynamic x = 'hal';
  x = 123;
  print(x);
  var a = 'hal';
 // a = 123;
  print(x);
  }

extension.dart

void main(){

 print( 10.sum(12));
}

extension SUM on int {
  int sum (int no) {
    return this+no;
  }
  
}