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29 lines
684 B
Rust
29 lines
684 B
Rust
//! Echoes lines read on stdin to stdout.
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#![feature(async_await)]
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use async_std::{io, prelude::*, task};
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fn main() -> io::Result<()> {
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task::block_on(async {
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let stdin = io::stdin();
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let mut stdout = io::stdout();
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let mut line = String::new();
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loop {
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// Read a line from stdin.
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let n = stdin.read_line(&mut line).await?;
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// If this is the end of stdin, return.
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if n == 0 {
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return Ok(());
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}
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// Write the line to stdout.
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stdout.write_all(line.as_bytes()).await?;
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stdout.flush().await?;
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line.clear();
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}
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})
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}
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