#macro #derive #drop #destruct

destruct-drop

Macro for dropping the fields of a struct or enum without dropping the container

1 unstable release

0.1.0 Sep 28, 2021

#1072 in Rust patterns


Used in netcorehost

MIT license

3KB

destruct-drop

CI crates.io Documentation dependency status MIT

Macro for dropping the fields of a struct or enum without dropping the container.

Usage

Add #[derive(DestructDrop)] to your struct or enum definition.

use destruct_drop::DestructDrop;

#[derive(DestructDrop)]
struct Container {
    inner: Inner
}

struct Inner;

impl Drop for Container {
    fn drop(&mut self) {
        println!("dropped Container");
    }
}

impl Drop for Inner {
    fn drop(&mut self) {
        println!("dropped Inner");
    }
}

fn main() {
    // prints "dropped Inner" and then "dropped Container"
    drop(Container { inner: Inner });

    // prints only "dropped Inner"
    Container { inner: Inner }.destruct_drop();
}

License

Licensed under MIT license (LICENSE or http://opensource.org/licenses/MIT)

Dependencies

~280–700KB
~17K SLoC

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