Struct async_fs::ReadDir

source · [−]

pub struct ReadDir(_);

Expand description

A stream of entries in a directory.

This stream is returned by read_dir() and yields items of type io::Result<DirEntry>. Each DirEntry can then retrieve information like entry’s path or metadata.

Trait Implementations

source

impl Debug for ReadDir

source

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

Formats the value using the given formatter. Read more

source

impl Stream for ReadDir

type Item = Result<DirEntry, 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

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

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

Auto Trait Implementations

impl !RefUnwindSafe for ReadDir

impl Send for ReadDir

impl !Sync for ReadDir

impl Unpin for ReadDir

impl !UnwindSafe for ReadDir

Blanket Implementations

source

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

source

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

source

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

source

impl<T> BorrowMut<T> for T where
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 for T where
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 S where
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>

Counts the number of items in the stream. Read more

source

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

Concatenates inner streams. Read more

source

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

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

source

fn filter(self, predicate: P) -> Filter<Self, P> where
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
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>

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

source

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

Takes items while predicate returns true. Read more

source

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

Skips the first n items of the stream. Read more

source

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

Skips items while predicate returns true. Read more

source

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

Yields every stepth item. Read more

source

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

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>,
T: 'a + Clone,

Clones all items. Read more

source

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

Copies all items. Read more

source

fn collect<C>(self) -> CollectFuture<Self, C> where
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>>,
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
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
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,
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
F: FnMut(&mut St, Self::Item) -> Option,

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

source

fn fuse(self) -> Fuse<Self>

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

source

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

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

source

fn enumerate(self) -> Enumerate<Self>

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

source

fn inspect<F>(self, f: F) -> Inspect<Self, F> where
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>

Returns the last item in the stream. Read more

source

fn find(&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,

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

source

fn position(&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(&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(&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
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(self, other: U) -> Zip<Self, U> where
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,
 Self: Stream<Item = (A, B)>,

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

source

fn or<S>(self, other: S) -> Or<Self, S> where
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
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, Global>> where
Self: 'a + Send,

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, Global>> where
Self: 'a,

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

source

impl<T, U> TryFrom for T where
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>::Error>

Performs the conversion.

source

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

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

impl<S, T, E> TryStream for S where
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

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

Struct async_fs::ReadDir

Trait Implementations

impl Debug for ReadDir

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

impl Stream for ReadDir

type Item = Result<DirEntry, Error>

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

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

Auto Trait Implementations

impl !RefUnwindSafe for ReadDir

impl Send for ReadDir

impl !Sync for ReadDir

impl Unpin for ReadDir

impl !UnwindSafe for ReadDir

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

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

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

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

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

fn count(self) -> CountFuture<Self>

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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, F: FnMut(B, T) -> Result<B, E>,

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

fn fuse(self) -> Fuse<Self>

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

fn enumerate(self) -> Enumerate<Self>

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

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

fn last(self) -> LastFuture<Self>

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

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

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

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

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

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

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

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

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)>,

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

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

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

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

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

type Error = Infallible

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

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

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

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

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

type Ok = T

type Error = E

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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,
F: FnMut(B, T) -> Result<B, E>,

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

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

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

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

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

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

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

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

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

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

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

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

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)>,

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

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

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

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

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

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

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

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