formatMoney method
Formats a dynamic value as a currency string in Brazilian Real (BRL).
The value is first parsed to a double. The format used is "R$ #,##0.00".
Implementation
String formatMoney(dynamic value) {
double dValue = parseDouble(value);
final formatter = NumberFormat("#,##0.00", "pt_BR");
String newText = "R\$ " + formatter.format(dValue);
return newText;
}