Dart - Primitive types

main.dart

void main() {
  //Különbség int és double között
  int firstInt = 5;
  double firstDouble = 5;
  num firstNum = 5;
  print("Testing 5");
  print(firstInt.runtimeType);
  print(firstDouble.runtimeType);
  print(firstNum.runtimeType);
  
  //int secondInt = 5.0; !ERROR!
  double secondDouble = 5.0;
  num secondNum = 5.0;
  print("Testing 5.0");
  print(secondDouble.runtimeType);
  print(secondNum.runtimeType);
  
  double thirdDouble = 5.1;
  num thirdNum = 5.1;
  print("Testing 5.1");
  print(thirdDouble.runtimeType);
  print(thirdNum.runtimeType);
  
  //firstInt = firstDouble; !ERROR!
  //firstDouble = firstInt; !ERROR!
  firstInt = firstDouble.toInt();
  firstDouble = firstInt.toDouble();
  
  firstNum = firstInt;
  firstNum = firstDouble;
  
  //Int hossza
  print("Testing int length");
  print(1 << 31);
  print(1 << 32);
  
  bool testBool = true;
  
  //Null
  int nullInt = null;
  print("Null értékei");
  print(nullInt.runtimeType);
  print(nullInt.hashCode);
  print(nullInt.toString());
  //print(a.abs()); !ERROR!
  
  //Dynamic típus
  dynamic testDynamic;
  testDynamic = 5;
  print(testDynamic.runtimeType);
  testDynamic = "Hello Dynamic!";
  print(testDynamic.runtimeType);
  //testDynamic.gcd(3); !ERROR!
}