https://doc.rust-lang.org/book/strings.html let s = "foo bar"; let t = "foo\n bar"; sとtが同じ意味になるのが面白い。 let hachiko = "忠犬ハチ公"; for b in hachiko.as_bytes() { print!("{}, ", b); } println!(""); for c in hachiko.chars() { pr…