Struct futures_lite::io::Lines

source · 
pub struct Lines<R> { /* private fields */ }
Expand description

Stream for the AsyncBufReadExt::lines() method.

Trait Implementations§

source§

impl<R: Debug> Debug for Lines<R>

source§

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

Formats the value using the given formatter. Read more
source§

impl<R: AsyncBufRead> Stream for Lines<R>

§

type Item = Result<String, Error>

Values yielded by the stream.
source§

fn poll_next( self: Pin<&mut Self>, cx: &mut Context<'_> ) -> Poll<Option<Self::Item>>

Attempt to pull out the next value of this stream, registering the current task for wakeup if the value is not yet available, and returning None if the stream is exhausted. Read more
source§

fn size_hint(&self) -> (usize, Option<usize>)

Returns the bounds on the remaining length of the stream. Read more
source§

impl<'__pin, R> Unpin for Lines<R>where __Origin<'__pin, R>: Unpin,

Auto Trait Implementations§

§

impl<R> RefUnwindSafe for Lines<R>where R: RefUnwindSafe,

§

impl<R> Send for Lines<R>where R: Send,

§

impl<R> Sync for Lines<R>where R: Sync,

§

impl<R> UnwindSafe for Lines<R>where R: UnwindSafe,

Blanket Implementations§

source§

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

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T> Borrow<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for Twhere T: ?Sized,

const: unstable · source§

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

Mutably borrows from an owned value. Read more
source§

impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

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

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

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

source§

impl<S> StreamExt for Swhere S: Stream + ?Sized,

source§

fn poll_next(&mut self, cx: &mut Context<'_>) -> Poll<Option<Self::Item>>where Self: Unpin,

A convenience for calling Stream::poll_next() on !Unpin types.
source§

fn next(&mut self) -> NextFuture<'_, Self> ⓘwhere Self: Unpin,

Retrieves the next item in the stream. Read more
source§

fn try_next<T, E>(&mut self) -> TryNextFuture<'_, Self> ⓘwhere Self: Stream<Item = Result<T, E>> + Unpin,

Retrieves the next item in the stream. Read more
source§

fn count(self) -> CountFuture<Self> ⓘwhere Self: Sized,

Counts the number of items in the stream. Read more
source§

fn map<T, F>(self, f: F) -> Map<Self, F>where Self: Sized, F: FnMut(Self::Item) -> T,

Maps items of the stream to new values using a closure. Read more
source§

fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F>where Self: Sized, U: Stream, F: FnMut(Self::Item) -> U,

Maps items to streams and then concatenates them. Read more
source§

fn flatten(self) -> Flatten<Self>where Self: Sized, Self::Item: Stream,

Concatenates inner streams. Read more
source§

fn then<F, Fut>(self, f: F) -> Then<Self, F, Fut>where Self: Sized, F: FnMut(Self::Item) -> Fut, Fut: Future,

Maps items of the stream to new values using an async closure. Read more
source§

fn filter<P>(self, predicate: P) -> Filter<Self, P>where Self: Sized, P: FnMut(&Self::Item) -> bool,

Keeps items of the stream for which predicate returns true. Read more
source§

fn filter_map<T, F>(self, f: F) -> FilterMap<Self, F>where Self: Sized, F: FnMut(Self::Item) -> Option<T>,

Filters and maps items of the stream using a closure. Read more
source§

fn take(self, n: usize) -> Take<Self>where Self: Sized,

Takes only the first n items of the stream. Read more
source§

fn take_while<P>(self, predicate: P) -> TakeWhile<Self, P>where Self: Sized, P: FnMut(&Self::Item) -> bool,

Takes items while predicate returns true. Read more
source§

fn skip(self, n: usize) -> Skip<Self>where Self: Sized,

Skips the first n items of the stream. Read more
source§

fn skip_while<P>(self, predicate: P) -> SkipWhile<Self, P>where Self: Sized, P: FnMut(&Self::Item) -> bool,

Skips items while predicate returns true. Read more
source§

fn step_by(self, step: usize) -> StepBy<Self>where Self: Sized,

Yields every stepth item. Read more
source§

fn chain<U>(self, other: U) -> Chain<Self, U>where Self: Sized, U: Stream<Item = Self::Item> + Sized,

Appends another stream to the end of this one. Read more
source§

fn cloned<'a, T>(self) -> Cloned<Self>where Self: Stream<Item = &'a T> + Sized, T: Clone + 'a,

Clones all items. Read more
source§

fn copied<'a, T>(self) -> Copied<Self>where Self: Stream<Item = &'a T> + Sized, T: Copy + 'a,

Copies all items. Read more
source§

fn collect<C>(self) -> CollectFuture<Self, C> ⓘwhere Self: Sized, C: Default + Extend<Self::Item>,

Collects all items in the stream into a collection. Read more
source§

fn try_collect<T, E, C>(self) -> TryCollectFuture<Self, C> ⓘwhere Self: Stream<Item = Result<T, E>> + Sized, C: Default + Extend<T>,

Collects all items in the fallible stream into a collection. Read more
source§

fn partition<B, P>(self, predicate: P) -> PartitionFuture<Self, P, B> ⓘwhere Self: Sized, B: Default + Extend<Self::Item>, P: FnMut(&Self::Item) -> bool,

Partitions items into those for which predicate is true and those for which it is false, and then collects them into two collections. Read more
source§

fn fold<T, F>(self, init: T, f: F) -> FoldFuture<Self, F, T> ⓘwhere Self: Sized, F: FnMut(T, Self::Item) -> T,

Accumulates a computation over the stream. Read more
source§

fn try_fold<T, E, F, B>( &mut self, init: B, f: F ) -> TryFoldFuture<'_, Self, F, B> ⓘwhere Self: Stream<Item = Result<T, E>> + Unpin + Sized, F: FnMut(B, T) -> Result<B, E>,

Accumulates a fallible computation over the stream. Read more
source§

fn scan<St, B, F>(self, initial_state: St, f: F) -> Scan<Self, St, F>where Self: Sized, F: FnMut(&mut St, Self::Item) -> Option<B>,

Maps items of the stream to new values using a state value and a closure. Read more
source§

fn fuse(self) -> Fuse<Self>where Self: Sized,

Fuses the stream so that it stops yielding items after the first None. Read more
source§

fn cycle(self) -> Cycle<Self>where Self: Clone + Sized,

Repeats the stream from beginning to end, forever. Read more
source§

fn enumerate(self) -> Enumerate<Self>where Self: Sized,

Enumerates items, mapping them to (index, item). Read more
source§

fn inspect<F>(self, f: F) -> Inspect<Self, F>where Self: Sized, F: FnMut(&Self::Item),

Calls a closure on each item and passes it on. Read more
source§

fn nth(&mut self, n: usize) -> NthFuture<'_, Self> ⓘwhere Self: Unpin,

Gets the nth item of the stream. Read more
source§

fn last(self) -> LastFuture<Self> ⓘwhere Self: Sized,

Returns the last item in the stream. Read more
source§

fn find<P>(&mut self, predicate: P) -> FindFuture<'_, Self, P> ⓘwhere Self: Unpin, P: FnMut(&Self::Item) -> bool,

Finds the first item of the stream for which predicate returns true. Read more
source§

fn find_map<F, B>(&mut self, f: F) -> FindMapFuture<'_, Self, F> ⓘwhere Self: Unpin, F: FnMut(Self::Item) -> Option<B>,

Applies a closure to items in the stream and returns the first Some result. Read more
source§

fn position<P>(&mut self, predicate: P) -> PositionFuture<'_, Self, P> ⓘwhere Self: Unpin, P: FnMut(Self::Item) -> bool,

Finds the index of the first item of the stream for which predicate returns true. Read more
source§

fn all<P>(&mut self, predicate: P) -> AllFuture<'_, Self, P> ⓘwhere Self: Unpin, P: FnMut(Self::Item) -> bool,

Tests if predicate returns true for all items in the stream. Read more
source§

fn any<P>(&mut self, predicate: P) -> AnyFuture<'_, Self, P> ⓘwhere Self: Unpin, P: FnMut(Self::Item) -> bool,

Tests if predicate returns true for any item in the stream. Read more
source§

fn for_each<F>(self, f: F) -> ForEachFuture<Self, F> ⓘwhere Self: Sized, F: FnMut(Self::Item),

Calls a closure on each item of the stream. Read more
source§

fn try_for_each<F, E>(&mut self, f: F) -> TryForEachFuture<'_, Self, F> ⓘwhere Self: Unpin, F: FnMut(Self::Item) -> Result<(), E>,

Calls a fallible closure on each item of the stream, stopping on first error. Read more
source§

fn zip<U>(self, other: U) -> Zip<Self, U>where Self: Sized, U: Stream,

Zips up two streams into a single stream of pairs. Read more
source§

fn unzip<A, B, FromA, FromB>(self) -> UnzipFuture<Self, FromA, FromB> ⓘwhere FromA: Default + Extend<A>, FromB: Default + Extend<B>, Self: Stream<Item = (A, B)> + Sized,

Collects a stream of pairs into a pair of collections. Read more
source§

fn or<S>(self, other: S) -> Or<Self, S>where Self: Sized, S: Stream<Item = Self::Item>,

Merges with other stream, preferring items from self whenever both streams are ready. Read more
source§

fn race<S>(self, other: S) -> Race<Self, S>where Self: Sized, S: Stream<Item = Self::Item>,

Merges with other stream, with no preference for either stream when both are ready. Read more
source§

fn boxed<'a>(self) -> Pin<Box<dyn Stream<Item = Self::Item> + Send + 'a>>where Self: Send + Sized + 'a,

Boxes the stream and changes its type to dyn Stream + Send + 'a. Read more
source§

fn boxed_local<'a>(self) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a>>where Self: Sized + 'a,

Boxes the stream and changes its type to dyn Stream + 'a. Read more
source§

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

§

type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

§

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

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
source§

impl<S, T, E> TryStream for Swhere S: Stream<Item = Result<T, E>> + ?Sized,

§

type Ok = T

The type of successful values yielded by this future
§

type Error = E

The type of failures yielded by this future
source§

fn try_poll_next( self: Pin<&mut S>, cx: &mut Context<'_> ) -> Poll<Option<Result<<S as TryStream>::Ok, <S as TryStream>::Error>>>

Poll this TryStream as if it were a Stream. Read more