Trait OnDropFutureExt 

pub trait OnDropFutureExt: Sized + Future {
    // Provided method
    fn on_drop<F>(self, on_drop: F) -> OnDropFuture<Self, F> 
       where F: FnOnce() { ... }
}

Extension trait for running a callback when a pending future is dropped.

Provided Methods

fn on_drop<F>(self, on_drop: F) -> OnDropFuture<Self, F>

where F: FnOnce(),

Wraps this future so that on_drop is called if the future is dropped before it completes. The callback is cancelled once the future completes, whatever its output.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<F> OnDropFutureExt for F

where F: Future,