Using a string

Rust provides an unusually large functionality for its string. Knowing it can save you quite some headache when dealing with raw user input.

How to do it...

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

1   fn main() {
2     // As a String is a kind of vector,
3     // you can construct them the same way
4     let mut s = String::new();
5     s.push('H');
6     s.push('i');
7     println!("s: {}", s);
8
9     // The String however can also be constructed
10    // from a string slice (&str)
11    // The next two ways of doing to are equivalent
12    let s = "Hello".to_string();
13    println!("s: {}", s);
14    let s = String::from("Hello");
15    println!("s: {}", s);
16
17    // A String in Rust will always be valid UTF-8
18    let s = "
 Þjóðhildur 
".to_string();
19    println!("s: {}", s);
20
21    // Append strings to each other
22    let mut s = "Hello ".to_string();
23    s.push_str("World");
24...