Off-topic discussion: Implemention of `Default` trait / internals vs. users forum

1

This topic holds a side-discussion to keep the original thread more on topic.

3

Yes, you can define a default value for a type by implementing the Default trait for that type. The Default trait provides a way to create a default value for a type when one is needed.

#[derive(Debug)]
struct MyType {
    value: i32,
}
impl Default for MyType {
    fn default() -> Self {
        MyType { value: 42 } 
    }
}
fn main() {
    let my_variable: MyType = Default::default();

    println!("Default value: {:?}", my_variable);
}

I defined a custom type MyType with a field value then I implemented the Default trait for MyType. The default function returns an instance of MyType with a default value for the value field (in this case, 42). In the main function, we create a variable and initialize it with the default value. When you run this code, you'll see that my_variable is initialized with the default value defined in the Default implementation for MyType.

Add default keyword
4

I'm, sorry, but what does this add to the discussion in the internals forum? This has a strong feeling of being AI generated.

1 Like
5

Hello, I'm actually new to the community and thought anytime a topic is brought up it means we should share knowledge on it or something??

6

I suspect the users.rust-lang.org would be more suitable for this, that is where people go to ask for help with Rust. This forum (internals) is for development of Rust itself. As such it has a different purpose.

1 Like
7

Ahhn ok thanks for the clearification @Vorpal

8

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