Rust 编程视频教程(进阶)——017_2 消息传递 2
2020-02-15 本文已影响0人
令狐壹冲
视频地址
头条地址:https://www.ixigua.com/i6775861706447913485
B站地址:https://www.bilibili.com/video/av81202308/
源码地址
github地址:https://github.com/anonymousGiga/learn_rust
讲解内容
1、通道与所有权转移
(1)例子:
use std::thread;
use std::sync::mpsc;
fn main() {
let (tx, rx) = mpsc::channel();
thread::spawn(move || {
let val = String::from("hi");
tx.send(val).unwrap();
println!("val is {}", val);//错误,此处不能使用val,因为val的所有权已经move到通道里面去了
});
let received = rx.recv().unwrap();
println!("Got: {}", received);
}
2、发送多个值示例
use std::thread;
use std::sync::mpsc;
use std::time::Duration;
fn main() {
let (tx, rx) = mpsc::channel();
thread::spawn(move || {
let vals = vec![
String::from("hi"),
String::from("from"),
String::from("the"),
String::from("thread"),
];
for val in vals {
tx.send(val).unwrap();
thread::sleep(Duration::from_secs(1));
}
});
for received in rx {
println!("Got: {}", received);
}
}