generate method

@override T generate()

Generates a value according to the given weights

Implementation

@override
T generate() {
  int sum = _pool.values.toList().reduce((value, element) => value + element);
  int choice = Random(_seed).nextInt(sum) + 1;

  for (var pair in _pool.entries) {
    if (choice <= pair.value) {
      return pair.key;
    }
    choice -= pair.value;
  }
  throw Exception(
      "Something went wrong while generating weighted pool $_pool");
}