Rust 1.63新特性

use std::thread;let mut a = vec![1, 2, 3];let mut x = 0;

thread::scope(|s| {
    s.spawn(|| {        println!("hello from the first scoped thread");        // borrow `a` here
        dbg!(&a);
    });
    s.spawn(|| {        println!("hello from the second scoped thread");        // mutably borrow `x`, because no other threads are using it
        x += a[0] + a[2];
    });    println!("hello from the main thread");
});// after the scope, can modify and access the variables againa.push(4);assert_eq!(x, a.len());

readyset：一个轻量SQL缓存引擎

主页：https://readyset.io/

ante：一个安全简单的系统语言

type Person = name: string, job: ref string// Infer that the data referenced via `&` should not be freed inside this functionmake_person name =
    Person name &"programmer"// bob is only used at this scope, so it can be safely freed afterwardbob = make_person "bob"// unlike ownership systems, aliasing is allowed with lifetime inferencebob_twin = bob
assert (bob.name == bob_twin.name)

quartz.rs：一个小巧的调度库

use std::{thread, time::Duration};struct MyTask;impl quartz_sched::Job for Box<MyTask> {    fn execute(&self) {        println!("[+] Executing 'MyTask'");
    }    fn description(&self) -> String {        "my task".to_string()
    }    fn key(&self) -> i64 {        43
    }
}fn main() {    let mut sched: quartz_sched::Scheduler = quartz_sched::Scheduler::new();    // start the scheduler
// spawns execution and feeder threads
    sched.start();    // execute after duration N
    sched.schedule_task(quartz_sched::schedule_task_after(
        Duration::from_secs(1),        Box::new(MyTask),
    ));    // get scheduled job meta info from scheduler
match sched.get_scheduled_job(/*key*/ 43) {        Some(job) => {            println!("[+] Next run at tick: {}", &job.next_runtime);
        }        None => {}
    };

    thread::sleep(Duration::from_secs(20));    // scheduler will stop after getting dropped
// alternatively, call sched.stop() to stop
// the scheduler.

// delete task associated with key from scheduler
    _ = sched.delete_task(43);
}

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