kv_result_get_success()
#include <kvstore.h>
kv_int_t 
kv_result_get_success(const kv_operation_results_t *res,
                      kv_int_t index) Identifies whether the operation at the provided index was successful. Returns KV_TRUE if it was successful; KV_FALSE otherwise. If the index parameter is out of range, this function returns KV_NO_SUCH_OBJECT.
Parameters
- 
                        res The res parameter is the operation results list containing the operation result that you want to examine. 
- 
                        index The index parameter is the index in the results list which hold the information you want to retrieve.