toCurrencyString method
toCurrencyString place a currencySymbol next to the number
Implementation
String toCurrencyString(
{int decimalPlaces = 2, String currencySymbol = '\$'}) {
if (isNull) return '';
if (this is int) {
return '$currencySymbol${toString()}';
}
final doubleValue = this!.toDouble();
final fixedValue = doubleValue.toStringAsFixed(decimalPlaces);
return '$currencySymbol$fixedValue';
}