Function RM_DictPrevC

src/module.cpp:7027–7032

This function is exactly like RedisModule_DictNext() but after returning * the currently selected element in the iterator, it selects the previous * element (laxicographically smaller) instead of the next one. */

 * the currently selected element in the iterator, it selects the previous
 * element (laxicographically smaller) instead of the next one. */
void *RM_DictPrevC(RedisModuleDictIter *di, size_t *keylen, void **dataptr) {
    if (!raxPrev(&di->ri)) return NULL;
    if (keylen) *keylen = di->ri.key_len;
    if (dataptr) *dataptr = di->ri.data;
    return di->ri.key;
}

/* Like RedisModuleNextC(), but instead of returning an internally allocated
 * buffer and key length, it returns directly a module string object allocated