Getter Functions

bool is_trained() const;

std::string index_name() const;

IndexType index_type() const;

IndexConfig* index_config() const;

std::vector<std::string> ListIDs();

size_t NumVectors();

// Get the number of vectors in the index
size_t vector_count = index->NumVectors();
std::cout << "Index contains " << vector_count << " vectors" << std::endl;

// Use count for validation or progress reporting
if (vector_count == 0) {
    std::cout << "Index is empty, consider adding vectors" << std::endl;
}