cargo add virvadb

//import virvadb
>>> use virvadb;

// create a new db
>>> let db_path="mydesktop/player.db";

>>> virvadb::new(db_path);

// create data
>>> let player_data=vec![("name","polka"), ("health_point", "14"), ("attack_point","15"), ("level","5")];

>>> virvadb::insert(db_path, &player_data);

// read data
>>> let db=virvadb::get_db(db_path);

>>> let data_position=1;

>>> let player_name=&db[Some(data_position.to_string())]["name"];

>>> println!("the player name is {}", player_name);

// update data
>>> virvadb::update(db_path, &vec![("name", "john")], data_position);

// delete single data 
>>> virvadb::delete(db_path, data_position);

// delete all data
>>> virvadb::delete_all(db_path);