Function lightgbm_sys::LGBM_DatasetCreateFromCSRFunc

pub unsafe extern "C" fn LGBM_DatasetCreateFromCSRFunc(
    get_row_funptr: *mut c_void, 
    num_rows: c_int, 
    num_col: i64, 
    parameters: *const c_char, 
    reference: DatasetHandle, 
    out: *mut DatasetHandle
) -> c_int

\brief Create a dataset from CSR format through callbacks. \param get_row_funptr Pointer to std::function<void(int idx, std::vector<std::pair<int, double>>& ret)> (called for every row and expected to clear and fill ret) \param num_rows Number of rows \param num_col Number of columns \param parameters Additional parameters \param reference Used to align bin mapper with other dataset, nullptr means isn't used \param[out] out Created dataset \return 0 when succeed, -1 when failure happens