Trait Overflow 

pub trait Overflow<T>: Default {
    // Required methods
    fn is_empty(&self) -> bool;
    fn drain<F>(&mut self, push: F)
       where F: FnMut(T) -> Option<T>;
}

Retained overflow messages for a mailbox policy.

Required Methods

fn is_empty(&self) -> bool

Return whether the retained message set is empty.

fn drain<F>(&mut self, push: F)

where F: FnMut(T) -> Option<T>,

Drain retained messages into push in delivery order until push rejects a message.

If push returns Some, the undelivered message and any later messages must remain retained for a future drain.

Dyn Compatibility

This trait is not dyn compatible.

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

Implementations on Foreign Types

impl<T> Overflow<T> for VecDeque<T>

fn is_empty(&self) -> bool

fn drain<F>(&mut self, push: F)

where F: FnMut(T) -> Option<T>,

Implementors