stlab::progress_tracker & operator=(const stlab::progress_tracker &) (1) (defaulted) stlab::progress_tracker & operator=(stlab::progress_tracker &&) (2) (defaulted) (1) stlab::progress_tracker & operator=(const stlab::progress_tracker &) (defaulted) Parameters const stlab::progress_tracker & unnamed (2) stlab::progress_tracker & operator=(stlab::progress_tracker &&) (defaulted) Parameters stlab::progress_tracker && unnamed