Method TrainOneIter

src/c_api.cpp:225–228

  }

  bool TrainOneIter() {
    std::lock_guard<std::mutex> lock(mutex_);
    return boosting_->TrainOneIter(nullptr, nullptr);
  }

  void Refit(const int32_t* leaf_preds, int32_t nrow, int32_t ncol) {
    std::lock_guard<std::mutex> lock(mutex_);