writer:Arc<Mutex<WriteHalf<TcpStream>>>,pub stop:Option<oneshot::Sender<()>>,sid:u64,handler:Arc<Mutex<HashMap<String,MessageHandler>>>,}impl Client{//1. 建立到服务器的连接//2. 启动后台任务pubasyncfnconnect(addr:&str)->std::io::Result...
Write,Read};#[derive(Debug,PartialEq)]structPerson{ name:String, age:u8,}implPerson{fnserialize<W:Write>(&self, writer:&mut W, big_endian:bool)->Result<(),Error>{letname_bytes=self.name.as_bytes();if name_bytes.len()>255{returnErr(Error::new(ErrorKind::Custom("name too long...
rustuse std::fs::File;use std::io::{BufWriter, Write};fn save_data(data:&[String], filename:&str)-> std::io::Result<()>{ let file = File::create(filename)?; let mut writer = BufWriter::new(file); for d in data { writer.write(d.as_bytes())?; writer.wr...
use tokio::sync::mpsc;#[tokio::main]asyncfnmain(){let(mut tx,mut rx)= mpsc::channel(32); tokio::spawn(asyncmove{ tx.send("hello".to_string()).await.unwrap(); tx.send("world".to_string()).await.unwrap();});whileletSome(msg)= rx.recv().await{println!("{}", msg...
reader.read_to_string(&mut contents)?; println!("content is: {}", contents); Ok(()) } 写入文件 要写入文件,可以使用File::create或File::open带上适当的打开模式(比如:std::fs::OpenOptions)。 在下面的示例代码中,我们调用File::create方法创建一个新文件。如果文件已存在,则其内容会被清空。然后...
#[derive(Serialize, Deserialize)] struct ServiceNode { pub ip: String, pub idc: String, pub status: String, } 需要序列化时,使用序列化库如SerdeJson进行序列化。 let service_node_str = serde_json::to_string(&service_node)?; let service_node = serde_json::from_str(&service_no...
;letmutreader=BufReader::new(file);letmutwriter=BufWriter::new(io::stdout());letmutline=String::new();loop{letn= reader.read_line(&mut line).await?;if n =={break;} writer.write_all(line.as_bytes()).await?; line.clear();}Ok(())}这个示例演示了如何使用 BufReader 和 BufWr...
("client said: {}", String::from_utf8_lossy(&buf[..len])); } println!("connection closed"); 客户端: let params: NoiseParams = "Noise_XX_25519_ChaChaPoly_BLAKE2s".parse().unwrap(); let builder: Builder<'_> = Builder::new(params.clone()); let static_key = builder.generate_...
let writer = &mut sub.msg_sender.lock().await.writer; writer.write("MSG ".as_bytes()).await?; writer.write(sub.subject.as_bytes()).await?; writer.write(" ".as_bytes()).await?; writer.write(sub.sid.as_bytes()).await?; writer.write(" ".as_bytes()).await?; writer.write(pub...
_says::say;// from the previous stepusestd::io::{stdout, BufWriter};fnmain() {letstdout=stdout();letmessage= String::from("Hello fellow Rustaceans!");letwidth= message.chars().count();letmutwriter= BufWriter::new(stdout.lock());say(message.as_bytes(), width, &mutwriter).unwrap...