isFound method

bool isFound(bool checker(E element))

Implementation

bool isFound(bool Function(E element) checker) {
  Iterator<E> iterator = this.iterator;
  if (!iterator.moveNext()) return false;
  if (checker(iterator.current)) return true;
  while (iterator.moveNext()) {
    if (checker(iterator.current)) return true;
  }
  return false;
}