Strings Basics

fn main() {
    let s: &str = "hello";
    println!("{s}");
}

fn main() {
    let mut s = String::from("hello");
    s.push_str(" world");
}

fn greet(name: &str) { println!("Hello, {name}"); }
fn main() { greet("Ada"); greet(&String::from("Bob")); }

let mut s = String::new();
s.push('!');
s.push_str("ok");

let s = "🦀";
assert_eq!(s.len(), 4); // bytes
assert_eq!(s.chars().count(), 1);

let msg = format!("{} {}", "hello", 42);

let owned: String = "x".into();
let slice: &str = &owned;