Follow the ensuing steps to get through this recipe:

1. Create a file named sample_option.rs and open it in your text editor.
2. Write the code header with the relevant information:

        //-- #########################
        //-- Task: Implementing Option
        //-- Author: Vigneshwer.D
        //-- Version: 1.0.0
        //-- Date: 26 March 17
        //-- #########################

3. Create the compare_stmt_match function; it accepts the input string of the Option<&str> type:

        // All arguments are handled explicitly using `match`.
        fn compare_stmt_match(input: Option<&str>) {
          // Specify a course of action for each case.
          match input {
            Some("Rust CookBook") => println!("Rust CookBook 
            was selected"),
            Some(inner) => println!("Rust CookBook not
            selected"),
            None => println!("No input provided"),
          }
        }

4. Similarly, create the compare_stmt_unwrap function; it also accepts the input string of the Option<&str> type:

        // All arguments are handled implicitly using `unwrap`.
        fn compare_stmt_unwrap(input: Option<&str>) {
          // `unwrap` returns a `panic` when it receives a
          `None`     value
          let inside_val = input.unwrap();
          if inside_val == "Another Book" { panic!("Rust
          CookBook is not selected"); }

          println!("I love {}s!!!!!", inside_val);
        }

5. Define the main function; it calls the two functions with different input:

        // main execution starts here
        fn main() {
          let Desired_Book = Some("Rust CookBook");
          let Another_Book = Some("Another Book");
          let Empty_value = None;

          compare_stmt_match(Desired_Book);
          compare_stmt_match(Another_Book);
          compare_stmt_match(Empty_value);

          println!("*********************");

          let Rand_Book = Some("Random Book");
          let No_val = None;

          compare_stmt_unwrap(Rand_Book);
          compare_stmt_unwrap(No_val);
        }

You will get the following output upon successful execution of the code: