Ensuring that DLList::pop_front and DLList::pop_back always delete the first element in the list or the last element in the list according to the operation
Ensuring that DLList::pop_front and DLList::pop_back always delete the first element in the list or the last element in the list according to the operation

Kronuz/Xapiand,Kronuz/Xapiand,Kronuz/Xapiand,Kronuz/Xapiand,Kronuz/Xapiand,Kronuz/Xapiand