Function rpoplpushCommand

app/redis-6.2.6/src/t_list.c:849–851

This is the semantic of this command: * RPOPLPUSH srclist dstlist: * IF LLEN(srclist) > 0 * element = RPOP srclist * LPUSH dstlist element * RETURN element * ELSE * RETURN nil * END * END * * The idea is to be able to get an element from a list in a reliable way * since the element is not just returned but pushed against another list * as well. This comm

 * as well. This command was originally proposed by Ezra Zygmuntowicz.
 */
void rpoplpushCommand(client *c) {
    lmoveGenericCommand(c, LIST_TAIL, LIST_HEAD);
}

/*-----------------------------------------------------------------------------
 * Blocking POP operations