Rust Formatting

fn main() {
    let name = "Ada";
    let pi = 3.14159265;
    println!("{name} has {pi:.2}");
    println!("[{:>8}] [{:<8}] [{:^8}]", "right", "left", "mid");
    println!("[{:08.3}] [{:+}]", pi, 5);
    println!("{:b} {:o} {:x} {:X}", 10, 10, 255, 255);
    println!("{0} {1} {0}", "a", "b");
    println!("{:?} {:?}", "text", Some(3));
    let width = 6;
    println!("[{:>width$}]", 42);
    println!("{}", format!("{:05}", 42));
    eprintln!("this goes to stderr");
}

Ada has 3.14
[   right] [left    ] [  mid   ]
[0003.142] [+5]
1010 12 ff FF
a b a
"text" Some(3)
[    42]
00042