How to do it...

1. Open the Cargo.toml file that has been generated earlier for you.

2. Under [dependencies], add the following line:

slab = "0.4.0"

3. If you want, you can go to slab's crates.io page (https://crates.io/crates/slab) to check for the newest version, and use that one instead.

4. In the folder bin, create a file called slab.rs.

5. Add the following code, and run it with cargo run --bin slab:

1   extern crate slab;
2   use slab::{Slab, VacantEntry};
3 
4   fn main() {
5     // A slab is meant to be used as a limited buffer
6     // As such, you should initialize it with a pre-
7     // defined capacity
8     const CAPACITY: usize = 1024;
9     let mut slab = Slab::with_capacity(CAPACITY);
10 
11    // You cannot simply access a slab's entry by
12    // index or by searching it. Instead, every
13    // insert gives you a key that you can use to
14    // access its entry
15    let hello_key = slab.insert("hello");
16    let world_key = slab.insert("world&quot...