parseDouble function

double? parseDouble(
  1. String? rawDouble, {
  2. bool tryParse = false,
})

Parses a rawDouble String to a double.

The rawDouble might include a unit (px, em or ex) which is stripped off when parsed to a double.

Passing null will return null.

Implementation

double? parseDouble(String? rawDouble, {bool tryParse = false}) {
  assert(tryParse != null); // ignore: unnecessary_null_comparison
  if (rawDouble == null) {
    return null;
  }

  rawDouble = rawDouble
      .replaceFirst('rem', '')
      .replaceFirst('em', '')
      .replaceFirst('ex', '')
      .replaceFirst('px', '')
      .replaceFirst('pt', '')
      .trim();

  if (tryParse) {
    return double.tryParse(rawDouble);
  }
  return double.parse(rawDouble);
}