Function RM_DictNextC

app/redis-6.2.6/src/module.c:6825–6830

Return the current item of the dictionary iterator `di` and steps to the * next element. If the iterator already yield the last element and there * are no other elements to return, NULL is returned, otherwise a pointer * to a string representing the key is provided, and the `*keylen` length * is set by reference (if keylen is not NULL). The `*dataptr`, if not NULL * is set to the value of the

 * next/prev iterator step. Also the pointer is no longer valid once the
 * iterator is released. */
void *RM_DictNextC(RedisModuleDictIter *di, size_t *keylen, void **dataptr) {
    if (!raxNext(&di->ri)) return NULL;
    if (keylen) *keylen = di->ri.key_len;
    if (dataptr) *dataptr = di->ri.data;
    return di->ri.key;
}

/* This function is exactly like RedisModule_DictNext() but after returning
 * the currently selected element in the iterator, it selects the previous