Method operator()

framework/foundation/src/Timer.cpp:37–43

        TimerCallback(std::weak_ptr<TimerImpl> timer, size_t id) : _timer(std::move(timer)), _id(id) {}

        bool operator()() const
        {
            if (auto timer = _timer.lock()) {
                return timer->notify(_id);
            }
            return false;
        }

      private:
        std::weak_ptr<TimerImpl> _timer;