message: Fixed a windows compilation warning
diff: @@ -733,7 +733,8 @@ public:
  if (roll_count_ == 0) return;
  - const size_type idx_size = std::distance(idx_begin, idx_end);
  + const size_type idx_size =
  + static_cast<size_type>(std::distance(idx_begin, idx_end));
  const size_type col_size = std::distance(column_begin, column_end);
  const size_type col_s = std::min(idx_size, col_size);
  