Rustlings: clippy 1 & 2

clippy_solution.rs

// Clippy 1 problem (this does not compile because float comparison)
fn main() {
    let x = 1.2331f64;
    let y = 1.2332f64;
    if y != x {
        println!("Success!");
    }
}

// Clippy1 solution
fn main() {
    let x = 1.2331f64;
    let y = 1.2332f64;
    if (x - y).abs() < 0.001 {
        println!("Success!");
    }
}
// Comparing their difference within some error tollerance, in my case 0.001

//Clippy2 problem, does not compile
fn main() {
    let mut res = 42;
    let option = Some(12);
    for x in option {
        res += x;
    }
    println!("{}", res);
}

//Clippy solution (using if let over pattern matching for single-match)
fn main() {
    let mut res = 42;
    let option = Some(12);
    if let Some(x) = option {
        res += x;
    }
    println!("{}", res);
}