How does pattern matching work

Pattern matching in Rust compares a value against a series of patterns to execute specific code blocks based on the match. It is primarily implemented using the match control flow operator, which ensures all possible cases are handled. The match expression evaluates the value and runs the code block corresponding to the first pattern that fits.

fn main() {
    let number = 13;

    match number {
        1 => println!("One"),
        2 | 3 | 5 | 7 | 11 => println!("Prime number"),
        _ => println!("Something else"),
    }
}

Pattern matching is like a sophisticated sorting machine that checks an item against a list of rules to decide what to do next. It ensures you handle every possible outcome, preventing your program from crashing when it encounters an unexpected value. Think of it as a vending machine that dispenses a specific snack only when you insert the exact code for that item.