| There are two types of strings in Rust: `String` and `&str`. |
| |
| A `String` is stored as a vector of bytes (`Vec<u8>`), but guaranteed to |
| always be a valid UTF-8 sequence. `String` is heap allocated, growable and not |
| null terminated. |
| |
| `&str` is a slice (`&[u8]`) that always points to a valid UTF-8 sequence, and |
| can be used to view into a `String`, just like `&[T]` is a view into `Vec<T>`. |
| |
| {str.play} |
| |
| More `str`/`String` methods can be found under the |
| [std::str](http://doc.rust-lang.org/std/str/) and |
| [std::string](http://doc.rust-lang.org/std/string/) |
| modules |
