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! ManeuverNotificationOptions) return false;
  ManeuverNotificationOptions _other = other;
  return language == _other.language &&
      unitSystem == _other.unitSystem &&
      DeepCollectionEquality().equals(includedNotificationTypes, _other.includedNotificationTypes) &&
      enableRoundaboutNotification == _other.enableRoundaboutNotification &&
      enableDestinationReachedNotification == _other.enableDestinationReachedNotification &&
      arrivalNotificationOption == _other.arrivalNotificationOption &&
      enableDoubleNotification == _other.enableDoubleNotification &&
      enablePhoneme == _other.enablePhoneme &&
      notificationFormatOption == _other.notificationFormatOption &&
      textUsageOptions == _other.textUsageOptions &&
      enableHighwayExit == _other.enableHighwayExit &&
      enableLaneRecommendation == _other.enableLaneRecommendation &&
      DeepCollectionEquality().equals(includedNaturalGuidanceTypes, _other.includedNaturalGuidanceTypes) &&
      directionInformationUsageForActionNotificationOption == _other.directionInformationUsageForActionNotificationOption;
}