Function defer

pub fn defer<F>(f: F) -> impl Drop
where
    F: FnOnce(),

Defer a function to be executed when the current scope is exited. This function takes a closure and returns an object that will execute the closure when it is dropped. This is useful for cleanup tasks, such as releasing resources or performing finalization steps.

Examples

let mut resource = acquire_resource();
let _defer = defer(|| {
    release_resource(&mut resource);
});