progress_tracker() (1) progress_tracker(const stlab::progress_tracker &) (2) (defaulted) progress_tracker(std::function<void (size_t, size_t)> f) (3) progress_tracker(stlab::progress_tracker &&) (4) (defaulted) (1) progress_tracker() MISSING (2) progress_tracker(const stlab::progress_tracker &) (defaulted) Parameters const stlab::progress_tracker & unnamed (3) progress_tracker(std::function<void (size_t, size_t)> f) MISSING Parameters std::function<void (size_t, size_t)> f (4) progress_tracker(stlab::progress_tracker &&) (defaulted) Parameters stlab::progress_tracker && unnamed