combine static method

String? Function(String?) combine(List<String? Function(String?)> validators)

Implementation

static String? Function(String?) combine(
  List<String? Function(String?)> validators,
) {
  return (String? value) {
    for (final v in validators) {
      final error = v(value);
      if (error != null) return error;
    }
    return null;
  };
}