pub fn repeat(byte: u8) -> Repeat {
    Repeat { byte }
}
Creates an instance of a reader that infinitely repeats one byte.

All reads from this reader will succeed by filling the specified buffer with
the given byte.

# Examples

```
# futures::executor::block_on(async {
use futures::io::{self, AsyncReadExt};

let mut buffer = [0; 3];
let mut reader = io::repeat(0b101);
reader.read_exact(&mut buffer).await.unwrap();
assert_eq!(buffer, [0b101, 0b101, 0b101]);
# Ok::<(), Box<dyn std::error::Error>>(()) }).unwrap();
```
futures-util/src/io/repeat.rs