/// # Example
///
/// ```no_run
- /// #![feature(seek_rewind)]
/// use std::io::{Read, Seek, Write};
/// use std::fs::OpenOptions;
///
/// f.read_to_string(&mut buf).unwrap();
/// assert_eq!(&buf, hello);
/// ```
- #[unstable(feature = "seek_rewind", issue = "85149")]
+ #[stable(feature = "seek_rewind", since = "1.55.0")]
fn rewind(&mut self) -> Result<()> {
self.seek(SeekFrom::Start(0))?;
Ok(())