Method Add

libs/base/observer_list.hpp:34–45

{
public:
  bool Add(Observer & observer)
  {
    std::lock_guard<Mutex> lock(m_observersLock);
    auto const it = std::find(m_observers.begin(), m_observers.end(), &observer);
    if (it != m_observers.end())
    {
      LOG(LWARNING, ("Can't add the same observer twice:", &observer));
      return false;
    }
    m_observers.push_back(&observer);
    return true;
  }

  bool Remove(Observer const & observer)
  {