Rust的Drop Trait，相当于析构代码

退出前自动执行的代码。

struct CustomSmartPointer { data: String, } impl Drop for CustomSmartPointer { fn drop(&mut self) { println!("Dropping CustomSmartPointer with data `{}`!", self.data); } } fn main() { let c = CustomSmartPointer{data: String::from("my stuff")}; println!("CustomSmartPointer created."); drop(c); println!("CustomSmartPointer dropped before the end of main."); }

转载于:https://www.cnblogs.com/aguncn/p/11440526.html

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