rust transactional state library
note: not atomic yet, coming soon
currently suitable for rapid prototyping of simple stateful systems
note: every op is O(n), so treat this as a poor man's DB for prototyping
#[macro_use]
extern crate acid_state;
#[macro_use]
extern crate lazy_static;
extern crate rustc_serialize;
use std::collections::HashMap;
#[derive(Debug, RustcDecodable, RustcEncodable)]
struct Cs {
v: u64,
}
acid_state! {
A: HashMap<String, u64> = HashMap::new();
B: u64 = 0;
C: Cs = Cs {
v: 0
};
}
fn main() {
let key = "yo".to_owned();
acid! {
(A => a, B => b, C => c) => {
// A, B, C have been pulled off disk
let mut current = a.entry(key).or_insert(0);
**b += 1;
*current += 1;
c.v += 1;
println!("a is now {:?}", current);
println!("b is now {:?}", **b);
println!("c is now {:?}", c.v);
// new values of A, B, C are now synced on disk
}
};
}