this post was submitted on 25 Mar 2024
11 points (100.0% liked)

Learning Rust and Lemmy

231 readers
1 users here now

Welcome

A collaborative space for people to work together on learning Rust, learning about the Lemmy code base, discussing whatever confusions or difficulties we're having in these endeavours, and solving problems, including, hopefully, some contributions back to the Lemmy code base.

Rules TL;DR: Be nice, constructive, and focus on learning and working together on understanding Rust and Lemmy.


Running Projects


Policies and Purposes

  1. This is a place to learn and work together.
  2. Questions and curiosity is welcome and encouraged.
  3. This isn't a technical support community. Those with technical knowledge and experienced aren't obliged to help, though such is very welcome. This is closer to a library of study groups than stackoverflow. Though, forming a repository of useful information would be a good side effect.
  4. This isn't an issue tracker for Lemmy (or Rust) or a place for suggestions. Instead, it's where the nature of an issue, what possible solutions might exist and how they could be or were implemented can be discussed, or, where the means by which a particular suggestion could be implemented is discussed.

See also:

Rules

  1. Lemmy.ml rule 2 applies strongly: "Be respectful, even when disagreeing. Everyone should feel welcome" (see Dessalines's post). This is a constructive space.
  2. Don't demean, intimidate or do anything that isn't constructive and encouraging to anyone trying to learn or understand. People should feel free to ask questions, be curious, and fill their gaps knowledge and understanding.
  3. Posts and comments should be (more or less) within scope (on which see Policies and Purposes above).
  4. See the Lemmy Code of Conduct
  5. Where applicable, rules should be interpreted in light of the Policies and Purposes.

Relevant links and Related Communities


Thumbnail and banner generated by ChatGPT.

founded 1 year ago
MODERATORS
 

cross-posted from: https://lemmy.world/post/13508677

Hello All:

I am working on rust problems here. In the second question I solved it by simply adding the return statement for the function to modify. I am not sure what the lesson in ownership to walk away with in this problem. Any guidance?

you are viewing a single comment's thread
view the rest of the comments
[–] InternetCitizen2 3 points 11 months ago (1 children)

Yes that is the question in question. I just was not sure what principle of ownership was in play to answer it since just adding the returns fixed the question. Perhaps it was supposed to be for another problem set and it got posted with these by accident.

[–] [email protected] 2 points 11 months ago

Yea, something seems off. Probably best to move on.

If you want a problem … here’s my quick modification to make it about ownership. You can modify both functions. By the sounds of it though you might be on top of this.

fn main() {
    let s1 = String::from("Hello world");
    let _ = take_ownership(s1);

    println!("{}", s1);
}

fn take_ownership(s: String) {
    println!("{}", s);
}