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Struct WeakSender

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pub struct WeakSender<T> { /* private fields */ }
Expand description

A sender that does not prevent the channel from being closed.

Weak senders do not count towards the number of active senders on the channel. As soon as all normal Senders are dropped, the channel is closed, even if there is still a WeakSender.

To send messages, a WeakSender must first be upgraded to a Sender using the [upgrade] method.

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impl<T> WeakSender<T>

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pub fn upgrade(&self) -> Option<Sender<T>>

Tries to upgrade the WeakSender to a Sender, in order to send messages.

Returns None if the channel was closed already. Note that a Some return value does not guarantee that the channel is still open.

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impl<T> Clone for WeakSender<T>

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fn clone(&self) -> Self

Clones this WeakSender.

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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<T> Debug for WeakSender<T>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<T> Freeze for WeakSender<T>

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impl<T> !RefUnwindSafe for WeakSender<T>

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impl<T> Send for WeakSender<T>
where T: Send,

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impl<T> Sync for WeakSender<T>
where T: Send,

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impl<T> Unpin for WeakSender<T>

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impl<T> !UnwindSafe for WeakSender<T>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.