xgboost_sys

Function XGDMatrixNumCol

Source 
pub unsafe extern "C" fn XGDMatrixNumCol(
    handle: DMatrixHandle,
    out: *mut bst_ulong,
) -> c_int
Expand description

\brief get number of columns \param handle the handle to the DMatrix \param out The output of number of columns \return 0 when success, -1 when failure happens