Rust Method Usage Demonstration

Introduction

In this lab, the usage of methods in Rust is demonstrated.

Note: If the lab does not specify a file name, you can use any file name you want. For example, you can use main.rs, compile and run it with rustc main.rs && ./main.

Methods

Methods are annotated similarly to functions:

struct Owner(i32);

impl Owner {
    // Annotate lifetimes as in a standalone function.
    fn add_one<'a>(&'a mut self) { self.0 += 1; }
    fn print<'a>(&'a self) {
        println!("`print`: {}", self.0);
    }
}

fn main() {
    let mut owner = Owner(18);

    owner.add_one();
    owner.print();
}

Summary

Congratulations! You have completed the Methods lab. You can practice more labs in LabEx to improve your skills.