Function zsetScore

src/t_zset.cpp:1263–1277

Return (by reference) the score of the specified member of the sorted set * storing it into *score. If the element does not exist C_ERR is returned * otherwise C_OK is returned and *score is correctly populated. * If 'zobj' or 'member' is NULL, C_ERR is returned. */

 * otherwise C_OK is returned and *score is correctly populated.
 * If 'zobj' or 'member' is NULL, C_ERR is returned. */
int zsetScore(robj_roptr zobj, sds member, double *score) {
    if (!zobj || !member) return C_ERR;

    if (zobj->encoding == OBJ_ENCODING_ZIPLIST) {
        if (zzlFind((unsigned char*)zobj->m_ptr, member, score) == NULL) return C_ERR;
    } else if (zobj->encoding == OBJ_ENCODING_SKIPLIST) {
        zset *zs = (zset*)zobj->m_ptr;
        dictEntry *de = dictFind(zs->dict, member);
        if (de == NULL) return C_ERR;
        *score = *(double*)dictGetVal(de);
    } else {
        serverPanic("Unknown sorted set encoding");
    }
    return C_OK;
}

/* Add a new element or update the score of an existing element in a sorted
 * set, regardless of its encoding.