# use std::iter::FromIterator;
use rsdb::Database;
let db1: Database<i32> = Database::new();
let db2: Database<&u8> = Database::from_iter("hello world".as_bytes().into_iter());
struct Vec2 { x: i32, y: i32 };
let db3: Database<Vec2> = Database::from_iter(vec![ Vec2 { x: 0, y: 5 }, Vec2 { x: 100, y: 50 } ]);

# use std::error::Error;
# use std::iter::FromIterator;
# fn main() -> Result<(), Box<dyn Error>> {
use serde::{Serialize, Deserialize};
#[derive(Serialize, Deserialize)]
struct Vec2 { x: i32, y: i32 };
 
use rsdb::Database;
let db1: Database<i32> = Database::new();
let db2: Database<&u8> = Database::from_iter("hello world".as_bytes().into_iter());
let db3: Database<Vec2> = Database::from_iter(vec![ Vec2 { x: 0, y: 5 }, Vec2 { x: 100, y: 50 } ]);
 
db1.save_to_file("db1.json")?;
db2.save_to_file("db2.json")?;
db3.save_to_file("db3.json")?;
# Ok(())
# }

# use std::iter::FromIterator;
use rsdb::{Database, Query, search, search_mut, remove};
let db = Database::from_iter(1..10);
let found_items = search!(&db match |it: &i32| *it >= 5 && *it <= 7);

# use std::iter::FromIterator;
# use rsdb::{Database, Query, search, search_mut, remove};
# let mut db = Database::from_iter(1..10);
let found_items_mut1 = search_mut!(&mut db match |it: &i32| *it >= 5 && *it <= 7);
# std::mem::drop(found_items_mut1);
// or
let found_items_mut2 = search!(&mut db match |it: &i32| *it >= 5 && *it <= 7);

# use std::iter::FromIterator;
# use rsdb::{Database, Query, search, search_mut, remove};
# let mut db = Database::from_iter(1..10);
let removed_items = remove!(&mut db match |it: &i32| *it >= 5 && *it <= 7);

# use std::iter::FromIterator;
use rsdb::{Database, Query};
let db = Database::from_iter(1..10);
// boring, simple query
db.search(Query::new(|it: &i32| *it < 5));
// cool AND query
db.search( Query::new(|it: &i32| *it < 5) & Query::new(|it: &i32| *it > 2) );
// cool OR query
db.search( Query::new(|it: &i32| *it >= 5) | Query::new(|it: &i32| *it <= 2) );