numeric method

double? numeric()

Returns double 0.564 from string percentage like "56.4%" Parse source as a double literal and return its value.

Implementation

double? numeric() {
  if (this == null) {
    return null;
  }
  if (_percentageRegex.hasMatch(this!)) {
    return double.parse(this!.substring(0, this!.length - 1)) / 100;
  }
  return double.tryParse(this!);
}