Mastering Rust - Second Edition

Strings

Strings are one of the most frequently used data types in any programming language. In Rust, they are usually found in two forms: the &str type (pronounced stir) and the String type. Rust strings are guaranteed to be valid UTF-8 encoded byte sequences. They are not null terminated as in C strings and can contain null bytes in-between them. The following program shows the two types in action:

// strings.rsfn main() {    let question = "How are you ?";            // a &str type    let person: String = "Bob".to_string();    let namaste = String::from("नमस्ते");        // unicodes yay!    println!("{}! {} {}", namaste, question, person);}

In the preceding code, person and namaste are of type String, while question is of type &str. There are multiple ways you can create ...