char **keys= static_cast<char **>(calloc(actual_loaded, sizeof(char*)));
size_t *key_lengths= static_cast<size_t *>(calloc(actual_loaded, sizeof(size_t)));
char **keys= static_cast<char **>(calloc(actual_loaded, sizeof(char*)));
size_t *key_lengths= static_cast<size_t *>(calloc(actual_loaded, sizeof(size_t)));