Struct futures::channel::oneshot::Sender

source ·
pub struct Sender<T> { /* private fields */ }
Expand description

A means of transmitting a single value to another task.

This is created by the channel function.

Implementations§

Completes this oneshot with a successful result.

This function will consume self and indicate to the other end, the Receiver, that the value provided is the result of the computation this represents.

If the value is successfully enqueued for the remote end to receive, then Ok(()) is returned. If the receiving end was dropped before this function was called, however, then Err(t) is returned.

Polls this Sender half to detect whether its associated Receiver has been dropped.

Return values

If Ready(()) is returned then the associated Receiver has been dropped, which means any work required for sending should be canceled.

If Pending is returned then the associated Receiver is still alive and may be able to receive a message if sent. The current task, however, is scheduled to receive a notification if the corresponding Receiver goes away.

Creates a future that resolves when this Sender’s corresponding Receiver half has hung up.

This is a utility wrapping poll_canceled to expose a Future.

Tests to see whether this Sender’s corresponding Receiver has been dropped.

Unlike poll_canceled, this function does not enqueue a task for wakeup upon cancellation, but merely reports the current state, which may be subject to concurrent modification.

Tests to see whether this Sender is connected to the given Receiver. That is, whether they were created by the same call to channel.

Trait Implementations§

Formats the value using the given formatter. Read more
Executes the destructor for this type. Read more

Auto Trait Implementations§

Blanket Implementations§

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.