Rust - Structs - Tuple Structs

You can also create structs that behave like tuples, i.e. structs without named fields. This can be useful when you want to pass tuples that contain specific information into a function.

struct Color(i32, i32, i32);
struct Point(i32, i32, i32);

fn main() {
    let white = Color(255, 255, 255);
    let origin = Point(0, 0, 0);

    print_color(white);
    //print_color(origin); // Breaks
}

fn print_color(color: Color) {
    // Use "." followed by the index to index into a Tuple Struct
    println!("({}, {}, {})", color.0, color.1, color.2);
}