compareTo method

@override int compareTo(covariant Money other)

The order of the comparisons is:

1. amount

The two currencies must be the same.

Implementation

@override
int compareTo(covariant Money other) {
  if (currency != other.currency) {
    throw const FormatException(
        'You cannot compare two moneys with different currencies. Before'
        ' comparing, convert one of them.');
  }

  // Last comparison
  final int comparison1 = amount.compareTo(other.amount);
  return comparison1;
}