String

let mut s = String::from("hello");
s.push_str(", world"); // hello, world

fn main() {
    let s = r"this is a raw string";
    let s2 = r##"this is a "second" string"##;
    let s3 = "this is a \"third\" string";
    dbg!(s);
    dbg!(s2);
    dbg!(s3);
}