fn index_mut(&mut self, index: ops::RangeTo<usize>) -> &mut str {
        &mut self[..][index]
    }
Converts the given value to a `String`.

# Examples

Basic usage:

```
let i = 5;
let five = String::from("5");

assert_eq!(five, i.to_string());
```
benchmarks/haystacks/code/rust-library.rs