Method CSCPageSource

src/data/sparse_page_source.h:594–599

 public:
  CSCPageSource(float missing, int nthreads, bst_feature_t n_features, uint32_t n_batches,
                std::shared_ptr<Cache> cache, std::shared_ptr<SparsePageSource> source)
      : PageSourceIncMixIn(missing, nthreads, n_features, n_batches, cache, true) {
    this->source_ = source;
    this->Fetch();
  }
};

class SortedCSCPageSource : public PageSourceIncMixIn<SortedCSCPage> {