Struct tokio::fs::ReadDir

source · [−]

pub struct ReadDir(_);

Expand description

Stream of the entries in a directory.

This stream is returned from the read_dir function of this module and will yield instances of DirEntry. Through a DirEntry information like the entry’s path and possibly other metadata can be learned.

Errors

This Stream will return an Err if there’s some sort of intermittent IO error during iteration.

Implementations

source

impl ReadDir

source

pub async fn next_entry(&mut self) -> Result<Option<DirEntry>>

Returns the next entry in the directory stream.

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>

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

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

pub 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

pub 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

pub 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

pub fn from(t: T) -> T

Returns the argument unchanged.

source

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

const: unstable · source

pub 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<St> StreamExt for St where
St: Stream + ?Sized,

source

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

Consumes and returns the next value in the stream or None if the stream is finished. Read more

source

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

Consumes and returns the next item in the stream. If an error is encountered before the next item, the error is returned instead. Read more

source

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

Maps this stream’s items to a different type, returning a new stream of the resulting type. Read more

source

fn merge(self, other: U) -> Merge<Self, U> where
U: Stream<Item = Self::Item>,
Self: Sized,

Combine two streams into one by interleaving the output of both as it is produced. Read more

source

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

Filters the values produced by this stream according to the provided predicate. Read more

source

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

Filters the values produced by this stream while simultaneously mapping them to a different type according to the provided closure. Read more

source

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

Creates a stream which ends after the first None. Read more

source

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

Creates a new stream of at most n items of the underlying stream. Read more

source

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

Take elements from this stream while the provided predicate resolves to true. Read more

source

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

Creates a new stream that will skip the n first items of the underlying stream. Read more

source

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

Skip elements from the underlying stream while the provided predicate resolves to true. Read more

source

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

Tests if every element of the stream matches a predicate. Read more

source

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

Tests if any element of the stream matches a predicate. Read more

source

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

Combine two streams into one by first returning all values from the first stream then all values from the second stream. Read more

source

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

A combinator that applies a function to every element in a stream producing a single, final value. Read more

source

fn collect<T>(self) -> Collect<Self, T> where
T: FromStream<Self::Item>,
Self: Sized,

Drain stream pushing all emitted values into a collection. Read more

source

fn timeout(self, duration: Duration) -> Timeout<Self> where
Self: Sized,

Applies a per-item timeout to the passed stream. 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

pub 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

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

Performs the conversion.

source

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

source

pub 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 tokio::fs::ReadDir

Errors

Implementations

impl ReadDir

pub async fn next_entry(&mut self) -> Result<Option<DirEntry>>

Trait Implementations

impl Debug for ReadDir

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

impl Stream for ReadDir

type Item = Result<DirEntry>

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,

pub fn type_id(&self) -> TypeId

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

pub fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

pub fn from(t: T) -> T

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

pub fn into(self) -> U

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

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

fn try_next<T, E>(&mut self) -> TryNext<'_, 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, Self: Sized,

fn merge<U>(self, other: U) -> Merge<Self, U> where U: Stream<Item = Self::Item>, Self: Sized,

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

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

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

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

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

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

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

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

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

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

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

fn collect<T>(self) -> Collect<Self, T> where T: FromStream<Self::Item>, Self: Sized,

fn timeout(self, duration: Duration) -> Timeout<Self> where Self: Sized,

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

type Error = Infallible

pub 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

pub 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

pub 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<St> StreamExt for St where
St: Stream + ?Sized,

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

fn try_next<T, E>(&mut self) -> TryNext<'_, 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,
Self: Sized,

fn merge<U>(self, other: U) -> Merge<Self, U> where
U: Stream<Item = Self::Item>,
Self: Sized,

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

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

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

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

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

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

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

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

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

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

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

fn collect<T>(self) -> Collect<Self, T> where
T: FromStream<Self::Item>,
Self: Sized,

fn timeout(self, duration: Duration) -> Timeout<Self> where
Self: Sized,

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,

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