FromIter in core::async_iter - Rust
Description: An async iterator that was created from iterator.

## FromIter

# Struct FromIter

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    pub struct FromIter<I> { /* private fields */ }

🔬This is a nightly-only experimental API. (`async_iter_from_iter` #81798)
Expand description

An async iterator that was created from iterator.

This async iterator is created by the `from_iter` function. See it documentation for more.

## Trait Implementations§

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### impl<I: Iterator> AsyncIterator for FromIter<I>

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#### type Item = <I as Iterator>::Item

🔬This is a nightly-only experimental API. (`async_iterator` #79024)
The type of items yielded by the async iterator.
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#### fn poll_next( self: Pin<&mut Self>, _cx: &mut Context<'_>, ) -> Poll<Option<Self::Item>>

🔬This is a nightly-only experimental API. (`async_iterator` #79024)
Attempts to pull out the next value of this async iterator, registering the current task for wakeup if the value is not yet available, and returning `None` if the async iterator is exhausted. Read more
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#### fn size_hint(&self) -> (usize, Option<usize>)

🔬This is a nightly-only experimental API. (`async_iterator` #79024)
Returns the bounds on the remaining length of the async iterator. Read more
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### impl<I: Clone> Clone for FromIter<I>

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#### fn clone(&self) -> FromIter<I>

Returns a duplicate of the value. Read more
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#### fn clone_from(&mut self, source: &Self)
where Self:,

Performs copy-assignment from `source`. Read more
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### impl<I: Debug> Debug for FromIter<I>

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

Formats the value using the given formatter. Read more
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### impl<I> Unpin for FromIter<I>

## Auto Trait Implementations§

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### impl<I> Freeze for FromIter<I>
where I: Freeze,

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### impl<I> RefUnwindSafe for FromIter<I>
where I: RefUnwindSafe,

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### impl<I> Send for FromIter<I>
where I: Send,

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### impl<I> Sync for FromIter<I>
where I: Sync,

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### impl<I> UnwindSafe for FromIter<I>
where I: UnwindSafe,

## 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, dest: *mut u8)

🔬This is a nightly-only experimental API. (`clone_to_uninit` #126799)
Performs copy-assignment from `self` to `dest`. 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<I> IntoAsyncIterator for I
where I: AsyncIterator,

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#### type Item = <I as AsyncIterator>::Item

🔬This is a nightly-only experimental API. (`async_iterator` #79024)
The type of the item yielded by the iterator
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#### type IntoAsyncIter = I

🔬This is a nightly-only experimental API. (`async_iterator` #79024)
The type of the resulting iterator
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#### fn into_async_iter(self) -> <I as IntoAsyncIterator>::IntoAsyncIter

🔬This is a nightly-only experimental API. (`async_iterator` #79024)
Converts `self` into an async iterator
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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.