Closures

This crate provides an abstraction for seperating code and state. Among other things it allows for recursive closures and for trait implementations like PartialEq and Clone.

See the examples directory for some usage examples.

A nightly version of Rust is required because this crate relies on unboxed closures.

Documentation

lib.rs:

extern crate closures;

use std::thread;
use std::sync::mpsc;
use closures::Closure;

struct State {
    id: i32,
    messages: Vec<&'static str>,
    tx: mpsc::Sender<(i32, &'static str)>,
}

fn main() {
    let (tx, rx) = mpsc::channel();
    
    let state = State {
        id: 0,
        messages: vec!["hello", "rusty", "world"],
        tx: tx.clone(),
    };
    thread::spawn(Closure::new(state, thread));
    
    let state = State {
        id: 1,
        messages: vec!["veni", "vidi", "vici"],
        tx: tx,
    };
    thread::spawn(Closure::new(state, thread));
    
    for (id, msg) in rx {
        println!("Thread {} sent: {}", id, msg);
    }
}

fn thread(this: &State) {
    for msg in &this.messages {
        this.tx.send((this.id, msg)).unwrap();
    }
}