Method ProgressDisplay

core/ProgressDisplay.hpp:6–14

class ProgressDisplay {
public:
    explicit ProgressDisplay(unsigned long expected_count_,
        std::ostream& os = std::cout,
        const std::string& s1 = "\n", //leading strings
        const std::string& s2 = "",
        const std::string& s3 = "")
        // os is hint; implementation may ignore, particularly in embedded systems
        : m_os(os), m_s1(s1), m_s2(s2), m_s3(s3) {
        restart(expected_count_);
    }

    ProgressDisplay(const ProgressDisplay&) = delete;
    ProgressDisplay& operator=(const ProgressDisplay&) = delete;