byte_stuff.rs

fn main() {
    let mut s = String::with_capacity(100);
    
    s.push_str("coffee and 🍌");
    s.shrink_to_fit();
    
    println!("`{s}` {} {}", s.len(), s.capacity());
    
    for c in '0'..='🍌' {
        if c.is_control() {
            // exclude controls, they mess up the output
            continue;
        }
        
        let mut buf = vec![0; c.len_utf8()];
        
        c.encode_utf8(&mut buf);
        
        println!("{c} {buf:?}", );
    }
}