int hashTypeGetValue(robj *o, sds field, unsigned char **vstr, unsigned int *vlen, long long *vll) {
    if (o->encoding == OBJ_ENCODING_ZIPLIST) {
        *vstr = NULL;
        if (hashTypeGetFromZiplist(o, field, vstr, vlen, vll) == 0)
            return C_OK;
    } else if (o->encoding == OBJ_ENCODING_HT) {
        sds value;
        if ((value = hashTypeGetFromHashTable(o, field)) != NULL) {
            *vstr = (unsigned char*) value;
            *vlen = sdslen(value);
            return C_OK;
        }
    } else {
        serverPanic("Unknown hash encoding");
    }
    return C_ERR;
}
int hashTypeGetValue(robj *o, sds field, unsigned char **vstr, unsigned int *vlen, long long *vll) {
    if (o->encoding == OBJ_ENCODING_ZIPLIST) {
        *vstr = NULL;
        if (hashTypeGetFromZiplist(o, field, vstr, vlen, vll) == 0)
            return C_OK;
    } else if (o->encoding == OBJ_ENCODING_HT) {
        sds value;
        if ((value = hashTypeGetFromHashTable(o, field)) != NULL) {
            *vstr = (unsigned char*) value;
            *vlen = sdslen(value);
            return C_OK;
        }
    } else {
        serverPanic("Unknown hash encoding");
    }
    return C_ERR;
}