Function SplitProgress

libraries/lib-basic-ui/BasicUI.h:343–359

 */
template <typename ItType, typename FnType>
void SplitProgress(
   ItType first, ItType last, FnType action, ProgressReporter parent)
{
   auto count = 0;
   const auto numIters = std::distance(first, last);
   if (numIters == 0)
      return;
   const ProgressReporter child =
      parent ? [&](double progress) { parent((count + progress) / numIters); } :
               ProgressReporter {};

   for (; first != last; ++first)
   {
      action(*first, child);
      ++count;
   }
}

//! Display a dialog with radio buttons.
/*!