Split string to numbers, Extract date time from string

main.dart

/*
 * Split string to numbers
 * https://gist.github.com/PlugFox/f4734be9b89f6b65534a7494ac622c49
 * https://dartpad.dev/?id=f4734be9b89f6b65534a7494ac622c49
 */

void main() => print('Моя дата: "2002-02-27T14:00:00-0500"!'.splitToNumbers(7));

extension SplitToNumbersX on String {
  List<int> splitToNumbers([int max = 8]) => codeUnits
      .fold<List<int>>(
        List<int>.generate(max + 1, (i) => i < max ? -1 : 0, growable: false),
        (r, c) => (c < 48 || c > 57 || r[max] >= max)
            ? ((r[max] >= max || r[r[max]] < 0) ? (r) : (r..[max] += 1))
            : (r..[r[max]] = (r[r[max]] < 0 ? 0 : (r[r[max]] * 10)) + c - 48),
      )
      .take(max)
      .map<int>((i) => i < 0 ? 0 : i)
      .toList(growable: false);
}