destruct-drop

用于在不丢弃容器的情况下丢弃结构体或枚举字段的宏。

用法

将 #[derive(DestructDrop)] 添加到您的 struct 或 enum 定义中。

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();
}

许可证

MIT 许可证下许可 (LICENSE 或 http://opensource.org/licenses/MIT)