Dart const experimentation

main.dart

class WithConstConstructor {
  final x;
  
  const WithConstConstructor(this.x);
}

void main() {
  // Generates new instance at runtime because there is no "const"
  final a1 = WithConstConstructor(0);
  final a2 = WithConstConstructor(0);
  print('a: ${a1 == a2}'); // false
  
  // const objects are created at compile-time
  // const objects with the same parameters are the same object
  
  // Explicit const value
  final b1 = const WithConstConstructor(0);
  final b2 = const WithConstConstructor(0);
  print('b: ${b1 == b2}'); // true
  
  // Implicit const value
  const c1 = WithConstConstructor(0);
  const c2 = WithConstConstructor(0);
  print('c: ${c1 == c2}'); // true
}