checkPolandBBAN function
Used for Poland BBAN check
@ignore
Implementation
bool checkPolandBBAN(String bban) {
const List<int> weights = <int>[3, 9, 7, 1, 3, 9, 7];
final int controlDigit = int.parse(bban[7], radix: 10);
final String toCheck = bban.substring(0, 7);
int sum = 0;
for (int index = 0; index < 7; index++) {
sum += int.parse(toCheck[index], radix: 10) * weights[index];
}
final int remainder = sum % 10;
return controlDigit == (remainder == 0 ? 0 : 10 - remainder);
}