order property
The physical order, with mezzanines after their corresponding floor.
Implementation
double get order {
final number = int.tryParse(code.replaceAll(RegExp('[^0-9]'), '')) ?? 0;
if (code.startsWith('R')) {
return 100 + number.toDouble();
}
final base = code.startsWith('B') ? -number.toDouble() : number.toDouble();
return base + (code.endsWith('M') ? 0.5 : 0);
}