Function lightgbm_sys::LGBM_DatasetGetField

pub unsafe extern "C" fn LGBM_DatasetGetField(
    handle: DatasetHandle, 
    field_name: *const c_char, 
    out_len: *mut c_int, 
    out_ptr: *mut *const c_void, 
    out_type: *mut c_int
) -> c_int

\brief Get info vector from dataset. \param handle Handle of dataset \param field_name Field name \param[out] out_len Used to set result length \param[out] out_ptr Pointer to the result \param[out] out_type Type of result pointer, can be C_API_DTYPE_INT32, C_API_DTYPE_FLOAT32 or C_API_DTYPE_FLOAT64 \return 0 when succeed, -1 when failure happens