map_iter_t *iter = nbd_malloc(sizeof(map_iter_t));
iter->impl = map->impl;
iter->state = map->impl->iter_begin(map->data, key);
return iter;
}
map_iter_t *iter = nbd_malloc(sizeof(map_iter_t));
iter->impl = map->impl;
iter->state = map->impl->iter_begin(map->data, key);
return iter;
}