Rust Slices

Allows to reference a contiguous sequence of elements in a collection without having to use the entire collection
Similar to references slices, do not take ownership of the underlying data
String Literals are string slices (They slice to the location in the binary containing the string)

Slices work by storing a reference to the first element of the collection and a length

String are also a type of String Slice

fn main() {
    let string1 = String::from("Hello World");
    
    let first_word = first_word(&string1);
    println!("First Word: {}", first_word);
}
 
fn first_word(string: &str) -> &str {
    let string_array = string.as_bytes();
    for (index, &char) in string_array.iter().enumerate() {
        if char == b' ' {
            &string[..index];
        }
    }
 
    &string[..]
}

A similar syntax can be used to slice other compound objects also

let array = [10, 20, 30, 40, 50, 60];
let array_slice = &array[0..=2];
println!("{:?}", array_slice);