Strings are stored with a length instead of null terminator.

All strings are UTF-8.

Most strings are either:

• String. Heap allocated and growable. Owns the data.
  • String is a wrapper around a Vec<u8>
• &str. A view into another string with a potentially shorter length. Read only.

“&str” is short for “&’static str”.

• A static lifetime.
• str’s size isn’t known at compile time so it has to be used as a reference with &.

let boxed_str: Box<str> = string.into_boxed_str();

• Owned string that won’t be modified further.

Rc<str>

• Reference counted immutable string slice.

Arc<str>

• Atomic reference counted immutable string slice.