How to do it...

1. In the folder src/bin, create a file called iterator.rs.
2. Add the following code, and run it with cargo run --bin iterator:

1   fn main() {
2     let names = vec!["Joe", "Miranda", "Alice"];
3     // Iterators can be accessed in many ways.
4     // Nearly all collections implement .iter() for this purpose
5     let mut iter = names.iter();
6     // A string itself is not iterable, but its characters are
7     let mut alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ".chars();
8     // Ranges are also (limited) iterators
9     let nums = 0..10;
10    // You can even create infinite iterators!
11    let all_nums = 0..;
12
13    // As the name says, you can iterate over iterators
14    // This will consume the iterator
15    for num in nums {
16        print!("{} ", num);
17    }
18    // nums is no longer usable
19    println!();
20
21    // Get the index of the current item
22    for (index, letter) in "abc".chars().enumerate() {
23      println...