Class always_true

src/indicators.hpp:1133–1133

    : if_else<conjuction<is_setting_from_tuple<Settings, Tuple>...>::value>::type {};

template <ProgressBarOption Id> struct always_true { static constexpr auto value = true; };

template <ProgressBarOption Id, typename Default> Default &&get_impl(Default &&def) {
  return std::forward<Default>(def);