operator + method

@override Quantity operator +(dynamic addend)

Override the addition operator to manage the Temperature/TemperatureInterval relationship.

• Adding a Temperature returns a Temperature object.
• Adding a TemperatureInterval returns a TemperatureInterval object.

Implementation

@override
Quantity operator +(dynamic addend) {
  if (addend is TemperatureInterval) {
    final newValueSI = valueSI + addend.valueSI;
    final ur = Quantity.calcRelativeCombinedUncertaintySumDiff(
        this, addend, newValueSI);
    return TemperatureInterval(K: newValueSI, uncert: ur);
  } else if (addend is Temperature) {
    final newValueSI = valueSI + addend.valueSI;
    final ur = Quantity.calcRelativeCombinedUncertaintySumDiff(
        this, addend, newValueSI);
    return Temperature(K: newValueSI, uncert: ur);
  } else {
    return super + addend;
  }
}