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! BatterySpecifications) return false;
  BatterySpecifications _other = other;
  return totalCapacityInKilowattHours == _other.totalCapacityInKilowattHours &&
      initialChargeInKilowattHours == _other.initialChargeInKilowattHours &&
      targetChargeInKilowattHours == _other.targetChargeInKilowattHours &&
      DeepCollectionEquality().equals(chargingCurve, _other.chargingCurve) &&
      DeepCollectionEquality().equals(connectorTypes, _other.connectorTypes) &&
      minChargeAtChargingStationInKilowattHours == _other.minChargeAtChargingStationInKilowattHours &&
      minChargeAtFirstChargingStationInKilowattHours == _other.minChargeAtFirstChargingStationInKilowattHours &&
      minChargeAtDestinationInKilowattHours == _other.minChargeAtDestinationInKilowattHours &&
      maxChargingVoltageInVolts == _other.maxChargingVoltageInVolts &&
      maxChargingCurrentInAmperes == _other.maxChargingCurrentInAmperes &&
      chargingSetupDuration == _other.chargingSetupDuration &&
      maxPowerAtLowVoltageInKilowatts == _other.maxPowerAtLowVoltageInKilowatts;
}