operator == method

  1. @override
bool operator ==(
  1. Object other
)

The equality operator.

The default behavior for all Objects is to return true if and only if this object and other are the same object.

Override this method to specify a different equality relation on a class. The overriding method must still be an equivalence relation. That is, it must be:

  • Total: It must return a boolean for all arguments. It should never throw.

  • Reflexive: For all objects o, o == o must be true.

  • Symmetric: For all objects o1 and o2, o1 == o2 and o2 == o1 must either both be true, or both be false.

  • Transitive: For all objects o1, o2, and o3, if o1 == o2 and o2 == o3 are true, then o1 == o3 must be true.

The method should also be consistent over time, so whether two objects are equal should only change if at least one of the objects was modified.

If a subclass overrides the equality operator, it should override the hashCode method as well to maintain consistency.

Implementation

@override
bool operator ==(Object other) {
  if (identical(this, other)) return true;
  if (other is! TruckAmenities) return false;
  TruckAmenities _other = other;
  return hasParking == _other.hasParking &&
      hasSecureParking == _other.hasSecureParking &&
      hasCarWash == _other.hasCarWash &&
      hasTruckWash == _other.hasTruckWash &&
      hasHighCanopy == _other.hasHighCanopy &&
      hasIdleReductionSystem == _other.hasIdleReductionSystem &&
      hasTruckScales == _other.hasTruckScales &&
      hasPowerSupply == _other.hasPowerSupply &&
      hasChemicalToiletDisposal == _other.hasChemicalToiletDisposal &&
      hasTruckStop == _other.hasTruckStop &&
      hasWifi == _other.hasWifi &&
      hasTruckService == _other.hasTruckService &&
      hasShower == _other.hasShower &&
      showerCount == _other.showerCount;
}