环境
- Time 2022-01-12
- Rust 1.57.0
- Tokio 1.15.0
概念
参考:https://docs.rs/tokio/latest/tokio/io/struct.Stdout.html
示例
main.rs
use tokio::io::{self, AsyncBufReadExt, AsyncWriteExt, BufReader, BufWriter};
#[tokio::main]
async fn main() -> io::Result<()> {
let mut reader = BufReader::new(io::stdin());
let mut buf = String::new();
reader.read_line(&mut buf).await?;
let mut writer = BufWriter::new(io::stdout());
writer.write_all(buf.trim_end().as_bytes()).await?;
writer.flush().await?;
Ok(())
}
总结
Tokio 对于标准输入和输出,也提供了异步的方式。