How to Handle Unicode in Rust

Rust handles Unicode automatically by using String (UTF-8) and &str slices, which are always valid UTF-8 and iterate by Unicode scalar values rather than bytes. Use the chars() method to iterate over individual characters safely, or is_char_boundary() to split strings at valid character boundaries.

fn main() {
    let s = "Hello, 世界";
    for c in s.chars() {
        println!("Char: {}", c);
    }
}

Rust treats text as a sequence of characters that can represent any language, not just English letters. You don't need to manually manage encoding because the language ensures your text is always valid. Think of it like a smart text box that automatically handles emojis and foreign letters without breaking your code.