Struct holochain::prelude::dependencies::kitsune_p2p_types::dependencies::lair_keystore_api::dependencies::tokio::fs::ReadDir
source · pub struct ReadDir(_);
Expand description
Reads the entries in a directory.
This struct 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.
A ReadDir
can be turned into a Stream
with ReadDirStream
.
Errors
This stream will return an Err
if there’s some sort of intermittent
IO error during iteration.
Implementations§
source§impl ReadDir
impl ReadDir
sourcepub fn poll_next_entry(
&mut self,
cx: &mut Context<'_>
) -> Poll<Result<Option<DirEntry>, Error>>
pub fn poll_next_entry( &mut self, cx: &mut Context<'_> ) -> Poll<Result<Option<DirEntry>, Error>>
Polls for the next directory entry in the stream.
This method returns:
Poll::Pending
if the next directory entry is not yet available.Poll::Ready(Ok(Some(entry)))
if the next directory entry is available.Poll::Ready(Ok(None))
if there are no more directory entries in this stream.Poll::Ready(Err(err))
if an IO error occurred while reading the next directory entry.
When the method returns Poll::Pending
, the Waker
in the provided
Context
is scheduled to receive a wakeup when the next directory entry
becomes available on the underlying IO resource.
Note that on multiple calls to poll_next_entry
, only the Waker
from
the Context
passed to the most recent call is scheduled to receive a
wakeup.
Trait Implementations§
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> ArchivePointee for T
impl<T> ArchivePointee for T
§type ArchivedMetadata = ()
type ArchivedMetadata = ()
§fn pointer_metadata(
_: &<T as ArchivePointee>::ArchivedMetadata
) -> <T as Pointee>::Metadata
fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata ) -> <T as Pointee>::Metadata
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
§impl<F, W, T, D> Deserialize<With<T, W>, D> for Fwhere
W: DeserializeWith<F, T, D>,
D: Fallible + ?Sized,
F: ?Sized,
impl<F, W, T, D> Deserialize<With<T, W>, D> for Fwhere W: DeserializeWith<F, T, D>, D: Fallible + ?Sized, F: ?Sized,
§fn deserialize(
&self,
deserializer: &mut D
) -> Result<With<T, W>, <D as Fallible>::Error>
fn deserialize( &self, deserializer: &mut D ) -> Result<With<T, W>, <D as Fallible>::Error>
source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
source§fn in_current_span(self) -> Instrumented<Self> ⓘ
fn in_current_span(self) -> Instrumented<Self> ⓘ
source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
source§fn in_current_span(self) -> Instrumented<Self> ⓘ
fn in_current_span(self) -> Instrumented<Self> ⓘ
§impl<T> Pointable for T
impl<T> Pointable for T
§impl<SS, SP> SupersetOf<SS> for SPwhere
SS: SubsetOf<SP>,
impl<SS, SP> SupersetOf<SS> for SPwhere SS: SubsetOf<SP>,
§fn to_subset(&self) -> Option<SS>
fn to_subset(&self) -> Option<SS>
self
from the equivalent element of its
superset. Read more§fn is_in_subset(&self) -> bool
fn is_in_subset(&self) -> bool
self
is actually part of its subset T
(and can be converted to it).§fn to_subset_unchecked(&self) -> SS
fn to_subset_unchecked(&self) -> SS
self.to_subset
but without any property checks. Always succeeds.§fn from_subset(element: &SS) -> SP
fn from_subset(element: &SS) -> SP
self
to the equivalent element of its superset.