void hgetCommand(client *c) {
    robj *o;

    if ((o = lookupKeyReadOrReply(c,c->argv[1],shared.null[c->resp])) == NULL ||
        checkType(c,o,OBJ_HASH)) return;

    addHashFieldToReply(c, o, c->argv[2]->ptr);
}
void hgetCommand(client *c) {
    robj *o;

    if ((o = lookupKeyReadOrReply(c,c->argv[1],shared.null[c->resp])) == NULL ||
        checkType(c,o,OBJ_HASH)) return;

    addHashFieldToReply(c, o, c->argv[2]->ptr);
}