match

Rust provides pattern matching via the match keyword, which can be used like
a C switch.

  1. fn main() {
  2.     let number = 13;
  3.     // TODO ^ Try different values for `number`
  5.     println!("Tell me about {}", number);
  6.     match number {
  7.         // Match a single value
  8.         1 => println!("One!"),
  9.         // Match several values
  10.         2 | 3 | 5 | 7 | 11 => println!("This is a prime"),
  11.         // Match an inclusive range
  12.         13...19 => println!("A teen"),
  13.         // Handle the rest of cases
  14.         _ => println!("Ain't special"),
  15.     }
  17.     let boolean = true;
  18.     // Match is an expression too
  19.     let binary = match boolean {
  20.         // The arms of a match must cover all the possible values
  21.         false => 0,
  22.         true => 1,
  23.         // TODO ^ Try commenting out one of these arms
  24.     };
  26.     println!("{} -> {}", boolean, binary);
  27. }