cached

simple rust caching macro

Easy to use caching inspired by python decorators.

Documentation

See examples for example of implementing a custom cache-store.

Usage

```rust

[macro_use] extern crate cached;

// cached! macro requires the lazy_static! macro

[macrouse] extern crate lazystatic;

use std::time::Duration; use std::thread::sleep;

use cached::{Cached, SizedCache}; // trait must be in scope

cached!{ SLOW: SizedCache = SizedCache::with_capacity(50); >> slow(n: u32) -> () = { if n == 0 { return; } sleep(Duration::new(1, 0)); slow(n-1) }}

pub fn main() { slow(10); slow(10); { let cache = SLOW.lock().unwrap(); println!("hits: {:?}", cache.cachehits()); println!("misses: {:?}", cache.cachemisses()); // make sure the cache-lock is dropped } } ```