I am still learning Rust thus I am using this project to explore several programming concepts in a new language.
In this project dependencies used
rand::Rnggenerates a random number which is the number to be guessed by the player.std :: io :: BufReadenables reading from the standard input.
In the lines
let parsed = line.ok().as_deref().map(str::parse::<i64>);
if let Some(Ok(guess)) = parsed {
....
}
The code uses conditional pattern-matching to ignore the lines that may cause an error
The first line creates a Result<i64>, ...> object because it might fail at the reading or parsing steps.
The next line only matches on Some(Ok(guess)) whenever a line results in a value that does not match, it skips the if statement, it is a great way to ignore errors.
This games continues looping as long as the value in the guess is not equal the random number assigned to it.
Learn Rust by writing a simple game by Moshe Zadka