isLength function

bool isLength(
  1. String input,
  2. int min, [
  3. int? max
])

check if the length of the string input falls in a range

Implementation

bool isLength(String input, int min, [int? max]) {
  List surrogatePairs = _regExp.allMatches(input).toList();
  int len = input.length - surrogatePairs.length;
  return len >= min && (max == null || len <= max);
}