randString static method

String randString(
  1. int length, {
  2. bool withSymbol = false,
  3. List<String> customChar = const [],
}) 
Mixins.randString(10); // generate random string value

Implementation

static String randString(int length,
    {bool withSymbol = false, List<String> customChar = const []}) {
  String chars =
      'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';

  if (customChar.isNotEmpty) {
    chars = customChar.join();
  }

  if (withSymbol) {
    chars += '!@#\$%^&*()_+-=[]{}|;:<>?,./';
  }

  if (length < 1) length = 1;

  String rand = '';
  for (int i = 0; i < length; i++) {
    rand += chars[Random().nextInt(chars.length)];
  }
  return rand;
}