Structs

Al igual que C y C++, Rust admite estructuras (struct) personalizadas:

struct Person {
    name: String,
    age: u8,
}

fn describe(person: &Person) {
    println!("{} is {} years old", person.name, person.age);
}

fn main() {
    let mut peter = Person { name: String::from("Peter"), age: 27 };
    describe(&peter);

    peter.age = 28;
    describe(&peter);

    let name = String::from("Avery");
    let age = 39;
    let avery = Person { name, age };
    describe(&avery);

    let jackie = Person { name: String::from("Jackie"), ..avery };
    describe(&jackie);
}

This slide should take about 10 minutes.

Puntos Clave:

Las estructuras funcionan como en C o en C++.
- Al igual que en C++, y a diferencia de C, no se necesita typedef para definir un tipo.
- A diferencia de C++, no existe ninguna herencia entre las estructuras.
This may be a good time to let people know there are different types of structs.
- Zero-sized structs (e.g. struct Foo;) might be used when implementing a trait on some type but don’t have any data that you want to store in the value itself.
- La siguiente diapositiva presentará las estructuras de tuplas, que se utilizan cuando los nombres de los campos no son importantes.
If you already have variables with the right names, then you can create the struct using a shorthand.
The syntax ..avery allows us to copy the majority of the fields from the old struct without having to explicitly type it all out. It must always be the last element.

Comprehensive Rust 🦀

Structs