# Trait std::marker::Sync
1.0.0[−][src]

    pub unsafe auto trait Sync { }

Expand description

Types for which it is safe to share references between threads.

This trait is automatically implemented when the compiler determines it’s appropriate.

The precise definition is: a type `T` is `Sync` if and only if `&T` is `Send`. In other words, if there is no possibility of undefined behavior (including data races) when passing `&T` references between threads.

As one would expect, primitive types like `u8` and `f64` are all `Sync`, and so are simple aggregate types containing them, like tuples, structs and enums. More examples of basic `Sync` types include “immutable” types like `&T`, and those with simple inherited mutability, such as `Box<T>`, `Vec<T>` and most other collection types. (Generic parameters need to be `Sync` for their container to be `Sync`.)

A somewhat surprising consequence of the definition is that `&mut T` is `Sync` (if `T` is `Sync`) even though it seems like that might provide unsynchronized mutation. The trick is that a mutable reference behind a shared reference (that is, `& &mut T`) becomes read-only, as if it were a `& &T`. Hence there is no risk of a data race.

Types that are not `Sync` are those that have “interior mutability” in a non-thread-safe form, such as `Cell` and `RefCell`. These types allow for mutation of their contents even through an immutable, shared reference. For example the `set` method on `Cell<T>` takes `&self`, so it requires only a shared reference `&Cell<T>`. The method performs no synchronization, thus `Cell` cannot be `Sync`.

Another example of a non-`Sync` type is the reference-counting pointer `Rc`. Given any reference `&Rc<T>`, you can clone a new `Rc<T>`, modifying the reference counts in a non-atomic way.

For cases when one does need thread-safe interior mutability, Rust provides atomic data types, as well as explicit locking via `sync::Mutex` and `sync::RwLock`. These types ensure that any mutation cannot cause data races, hence the types are `Sync`. Likewise, `sync::Arc` provides a thread-safe analogue of `Rc`.

Any types with interior mutability must also use the `cell::UnsafeCell` wrapper around the value(s) which can be mutated through a shared reference. Failing to doing this is undefined behavior. For example, `transmute`-ing from `&T` to `&mut T` is invalid.

See the Nomicon for more details about `Sync`.

## Implementations on Foreign Types

`impl Sync for Argument`
`impl Sync for FormatSpec`
`impl Sync for Alignment`
`impl Sync for Count`

## Implementors

1.26.0[src]
`impl !Sync for Args`
1.26.0[src]
`impl !Sync for ArgsOs`
[src]
`impl Sync for AtomicBool`
1.34.0[src]
`impl Sync for AtomicI8`
1.34.0[src]
`impl Sync for AtomicI16`
1.34.0[src]
`impl Sync for AtomicI32`
1.34.0[src]
`impl Sync for AtomicI64`
[src]
`impl Sync for AtomicIsize`
1.34.0[src]
`impl Sync for AtomicU8`
1.34.0[src]
`impl Sync for AtomicU16`
1.34.0[src]
`impl Sync for AtomicU32`
1.34.0[src]
`impl Sync for AtomicU64`
[src]
`impl Sync for AtomicUsize`
[src]
`impl Sync for std::sync::Once`
1.36.0[src]
`impl Sync for Waker`
1.6.0[src]
`impl<'_> Sync for std::string::Drain<'_>`
[src]
`impl<'_, T> Sync for std::collections::linked_list::Cursor<'_, T> where
T: Sync,`
[src]
`impl<'_, T> Sync for CursorMut<'_, T> where
T: Sync,`
[src]
`impl<'_, T> Sync for std::collections::linked_list::Iter<'_, T> where
T: Sync,`
[src]
`impl<'_, T> Sync for std::collections::linked_list::IterMut<'_, T> where
T: Sync,`
[src]
`impl<'_, T> Sync for std::collections::vec_deque::IterMut<'_, T> where
T: Sync,`
[src]
`impl<'_, T> Sync for std::slice::Iter<'_, T> where
T: Sync,`
[src]
`impl<'_, T> Sync for std::slice::IterMut<'_, T> where
T: Sync,`
1.6.0[src]
`impl<'_, T, A> Sync for std::collections::vec_deque::Drain<'_, T, A> where
T: Sync,
A: Allocator + Sync,`
1.6.0[src]
`impl<'_, T, A> Sync for std::vec::Drain<'_, T, A> where
T: Sync,
A: Sync + Allocator,`
1.44.0[src]
`impl<'a> Sync for IoSlice<'a>`
1.44.0[src]
`impl<'a> Sync for IoSliceMut<'a>`
[src]
`impl<Dyn> Sync for DynMetadata<Dyn> where
Dyn: ?Sized,`
[src]
`impl<T> !Sync for *const T where
T: ?Sized,`
[src]
`impl<T> !Sync for *mut T where
T: ?Sized,`
[src]
`impl<T> !Sync for Cell<T> where
T: ?Sized,`
[src]
`impl<T> !Sync for RefCell<T> where
T: ?Sized,`
[src]
`impl<T> !Sync for UnsafeCell<T> where
T: ?Sized,`
1.25.0[src]
`impl<T> !Sync for NonNull<T> where
T: ?Sized,`
[src]
`impl<T> !Sync for Rc<T> where
T: ?Sized,`
1.4.0[src]
`impl<T> !Sync for std::rc::Weak<T> where
T: ?Sized,`
[src]
`impl<T> !Sync for Receiver<T>`
[src]
`impl<T> !Sync for Sender<T>`
[src]
`impl<T> Sync for LinkedList<T> where
T: Sync,`
1.42.0[src]
`impl<T> Sync for std::iter::Empty<T>`
[src]
`impl<T> Sync for AtomicPtr<T>`
[src]
`impl<T> Sync for Arc<T> where
T: Sync + Send + ?Sized,`
1.4.0[src]
`impl<T> Sync for std::sync::Weak<T> where
T: Sync + Send + ?Sized,`
1.29.0[src]
`impl<T> Sync for JoinHandle<T>`
[src]
`impl<T, A> Sync for std::vec::IntoIter<T, A> where
T: Sync,
A: Allocator,`
[src]
`impl<T, F: Send> Sync for SyncLazy<T, F> where
SyncOnceCell<T>: Sync,`
[src]
`impl<T: Sync + Send> Sync for SyncOnceCell<T>`
[src]
`impl<T: ?Sized + Send + Sync> Sync for RwLock<T>`
[src]
`impl<T: ?Sized + Send> Sync for Mutex<T>`
1.19.0[src]
`impl<T: ?Sized + Sync> Sync for MutexGuard<'_, T>`
1.23.0[src]
`impl<T: ?Sized + Sync> Sync for RwLockReadGuard<'_, T>`
1.23.0[src]
`impl<T: ?Sized + Sync> Sync for RwLockWriteGuard<'_, T>`

## Auto implementors

`impl !Sync for Vars`
`impl !Sync for VarsOs`
`impl !Sync for OnceState`
`impl !Sync for RawWaker`
`impl Sync for BacktraceStatus`
`impl Sync for std::cmp::Ordering`
`impl Sync for TryReserveError`
`impl Sync for Infallible`
`impl Sync for VarError`
`impl Sync for c_void`
`impl Sync for std::fmt::Alignment`
`impl Sync for ErrorKind`
`impl Sync for SeekFrom`
`impl Sync for IpAddr`
`impl Sync for Ipv6MulticastScope`
`impl Sync for Shutdown`
`impl Sync for std::net::SocketAddr`
`impl Sync for FpCategory`
`impl Sync for IntErrorKind`
`impl Sync for AncillaryError`
`impl Sync for SearchStep`
`impl Sync for std::sync::atomic::Ordering`
`impl Sync for RecvTimeoutError`
`impl Sync for TryRecvError`
`impl Sync for bool`
`impl Sync for char`
`impl Sync for f32`
`impl Sync for f64`
`impl Sync for i8`
`impl Sync for i16`
`impl Sync for i32`
`impl Sync for i64`
`impl Sync for i128`
`impl Sync for isize`
`impl Sync for [u8]`
`impl Sync for str`
`impl Sync for u8`
`impl Sync for u16`
`impl Sync for u32`
`impl Sync for u64`
`impl Sync for u128`
`impl Sync for usize`
`impl Sync for AllocError`
`impl Sync for Global`
`impl Sync for Layout`
`impl Sync for LayoutError`
`impl Sync for System`
`impl Sync for TypeId`
`impl Sync for TryFromSliceError`
`impl Sync for std::ascii::EscapeDefault`
`impl Sync for Backtrace`
`impl Sync for BacktraceFrame`
`impl Sync for BorrowError`
`impl Sync for BorrowMutError`
`impl Sync for CharTryFromError`
`impl Sync for DecodeUtf16Error`
`impl Sync for std::char::EscapeDebug`
`impl Sync for std::char::EscapeDefault`
`impl Sync for std::char::EscapeUnicode`
`impl Sync for ParseCharError`
`impl Sync for ToLowercase`
`impl Sync for ToUppercase`
`impl Sync for DefaultHasher`
`impl Sync for RandomState`
`impl Sync for JoinPathsError`
`impl Sync for CStr`
`impl Sync for CString`
`impl Sync for FromBytesWithNulError`
`impl Sync for FromVecWithNulError`
`impl Sync for IntoStringError`
`impl Sync for NulError`
`impl Sync for OsStr`
`impl Sync for OsString`
`impl Sync for std::fmt::Error`
`impl Sync for DirBuilder`
`impl Sync for DirEntry`
`impl Sync for File`
`impl Sync for FileType`
`impl Sync for Metadata`
`impl Sync for OpenOptions`
`impl Sync for Permissions`
`impl Sync for ReadDir`
`impl Sync for SipHasher`
`impl Sync for std::io::Empty`
`impl Sync for std::io::Error`
`impl Sync for Initializer`
`impl Sync for std::io::Repeat`
`impl Sync for Sink`
`impl Sync for Stderr`
`impl Sync for Stdin`
`impl Sync for Stdout`
`impl Sync for AddrParseError`
`impl Sync for Ipv4Addr`
`impl Sync for Ipv6Addr`
`impl Sync for SocketAddrV4`
`impl Sync for SocketAddrV6`
`impl Sync for TcpListener`
`impl Sync for TcpStream`
`impl Sync for UdpSocket`
`impl Sync for NonZeroI8`
`impl Sync for NonZeroI16`
`impl Sync for NonZeroI32`
`impl Sync for NonZeroI64`
`impl Sync for NonZeroI128`
`impl Sync for NonZeroIsize`
`impl Sync for NonZeroU8`
`impl Sync for NonZeroU16`
`impl Sync for NonZeroU32`
`impl Sync for NonZeroU64`
`impl Sync for NonZeroU128`
`impl Sync for NonZeroUsize`
`impl Sync for ParseFloatError`
`impl Sync for ParseIntError`
`impl Sync for TryFromIntError`
`impl Sync for RangeFull`
`impl Sync for stat`
`impl Sync for std::os::unix::net::SocketAddr`
`impl Sync for SocketCred`
`impl Sync for UCred`
`impl Sync for UnixDatagram`
`impl Sync for UnixListener`
`impl Sync for UnixStream`
`impl Sync for Path`
`impl Sync for PathBuf`
`impl Sync for StripPrefixError`
`impl Sync for Child`
`impl Sync for ChildStderr`
`impl Sync for ChildStdin`
`impl Sync for ChildStdout`
`impl Sync for Command`
`impl Sync for ExitCode`
`impl Sync for ExitStatus`
`impl Sync for ExitStatusError`
`impl Sync for Output`
`impl Sync for Stdio`
`impl Sync for ParseBoolError`
`impl Sync for Utf8Error`
`impl Sync for FromUtf8Error`
`impl Sync for FromUtf16Error`
`impl Sync for String`
`impl Sync for RecvError`
`impl Sync for Barrier`
`impl Sync for BarrierWaitResult`
`impl Sync for Condvar`
`impl Sync for WaitTimeoutResult`
`impl Sync for RawWakerVTable`
`impl Sync for AccessError`
`impl Sync for Builder`
`impl Sync for Thread`
`impl Sync for ThreadId`
`impl Sync for Duration`
`impl Sync for Instant`
`impl Sync for SystemTime`
`impl Sync for SystemTimeError`
`impl Sync for PhantomPinned`
`impl<'a> !Sync for std::error::Chain<'a>`
`impl<'a> !Sync for Arguments<'a>`
`impl<'a> !Sync for Formatter<'a>`
`impl<'a> !Sync for PanicInfo<'a>`
`impl<'a> Sync for AncillaryData<'a>`
`impl<'a> Sync for Component<'a>`
`impl<'a> Sync for Prefix<'a>`
`impl<'a> Sync for SplitPaths<'a>`
`impl<'a> Sync for StderrLock<'a>`
`impl<'a> Sync for StdinLock<'a>`
`impl<'a> Sync for StdoutLock<'a>`
`impl<'a> Sync for std::net::Incoming<'a>`
`impl<'a> Sync for std::os::unix::net::Incoming<'a>`
`impl<'a> Sync for Messages<'a>`
`impl<'a> Sync for ScmCredentials<'a>`
`impl<'a> Sync for ScmRights<'a>`
`impl<'a> Sync for SocketAncillary<'a>`
`impl<'a> Sync for EncodeWide<'a>`
`impl<'a> Sync for Location<'a>`
`impl<'a> Sync for Ancestors<'a>`
`impl<'a> Sync for Components<'a>`
`impl<'a> Sync for Display<'a>`
`impl<'a> Sync for std::path::Iter<'a>`
`impl<'a> Sync for PrefixComponent<'a>`
`impl<'a> Sync for CommandArgs<'a>`
`impl<'a> Sync for CommandEnvs<'a>`
`impl<'a> Sync for CharSearcher<'a>`
`impl<'a> Sync for std::str::Bytes<'a>`
`impl<'a> Sync for CharIndices<'a>`
`impl<'a> Sync for Chars<'a>`
`impl<'a> Sync for EncodeUtf16<'a>`
`impl<'a> Sync for std::str::EscapeDebug<'a>`
`impl<'a> Sync for std::str::EscapeDefault<'a>`
`impl<'a> Sync for std::str::EscapeUnicode<'a>`
`impl<'a> Sync for std::str::Lines<'a>`
`impl<'a> Sync for LinesAny<'a>`
`impl<'a> Sync for SplitAsciiWhitespace<'a>`
`impl<'a> Sync for SplitWhitespace<'a>`
`impl<'a> Sync for Context<'a>`
`impl<'a, 'b> !Sync for DebugList<'a, 'b>`
`impl<'a, 'b> !Sync for DebugMap<'a, 'b>`
`impl<'a, 'b> !Sync for DebugSet<'a, 'b>`
`impl<'a, 'b> !Sync for DebugStruct<'a, 'b>`
`impl<'a, 'b> !Sync for DebugTuple<'a, 'b>`
`impl<'a, 'b> Sync for CharSliceSearcher<'a, 'b>`
`impl<'a, 'b> Sync for StrSearcher<'a, 'b>`
`impl<'a, 'f> !Sync for VaList<'a, 'f>`
`impl<'a, A> Sync for std::option::Iter<'a, A> where
A: Sync,`
`impl<'a, A> Sync for std::option::IterMut<'a, A> where
A: Sync,`
`impl<'a, B: ?Sized> Sync for Cow<'a, B> where
B: Sync,
<B as ToOwned>::Owned: Sync,`
`impl<'a, F> Sync for CharPredicateSearcher<'a, F> where
F: Sync,`
`impl<'a, I, A> Sync for Splice<'a, I, A> where
A: Sync,
I: Sync,
<I as Iterator>::Item: Sync,`
`impl<'a, K> Sync for std::collections::hash_set::Drain<'a, K> where
K: Sync,`
`impl<'a, K> Sync for std::collections::hash_set::Iter<'a, K> where
K: Sync,`
`impl<'a, K, F> Sync for std::collections::hash_set::DrainFilter<'a, K, F> where
F: Sync,
K: Sync,`
`impl<'a, K, V> Sync for std::collections::btree_map::Entry<'a, K, V> where
K: Sync,
V: Sync,`
`impl<'a, K, V> Sync for std::collections::hash_map::Entry<'a, K, V> where
K: Sync,
V: Sync,`
`impl<'a, K, V> Sync for std::collections::btree_map::Iter<'a, K, V> where
K: Sync,
V: Sync,`
`impl<'a, K, V> Sync for std::collections::btree_map::IterMut<'a, K, V> where
K: Sync,
V: Sync,`
`impl<'a, K, V> Sync for std::collections::btree_map::Keys<'a, K, V> where
K: Sync,
V: Sync,`
`impl<'a, K, V> Sync for std::collections::btree_map::OccupiedEntry<'a, K, V> where
K: Sync,
V: Sync,`
`impl<'a, K, V> Sync for std::collections::btree_map::OccupiedError<'a, K, V> where
K: Sync,
V: Sync,`
`impl<'a, K, V> Sync for std::collections::btree_map::Range<'a, K, V> where
K: Sync,
V: Sync,`
`impl<'a, K, V> Sync for RangeMut<'a, K, V> where
K: Sync,
V: Sync,`
`impl<'a, K, V> Sync for std::collections::btree_map::VacantEntry<'a, K, V> where
K: Sync,
V: Sync,`
`impl<'a, K, V> Sync for std::collections::btree_map::Values<'a, K, V> where
K: Sync,
V: Sync,`
`impl<'a, K, V> Sync for std::collections::btree_map::ValuesMut<'a, K, V> where
K: Sync,
V: Sync,`
`impl<'a, K, V> Sync for std::collections::hash_map::Drain<'a, K, V> where
K: Sync,
V: Sync,`
`impl<'a, K, V> Sync for std::collections::hash_map::Iter<'a, K, V> where
K: Sync,
V: Sync,`
`impl<'a, K, V> Sync for std::collections::hash_map::IterMut<'a, K, V> where
K: Sync,
V: Sync,`
`impl<'a, K, V> Sync for std::collections::hash_map::Keys<'a, K, V> where
K: Sync,
V: Sync,`
`impl<'a, K, V> Sync for std::collections::hash_map::OccupiedEntry<'a, K, V> where
K: Sync,
V: Sync,`
`impl<'a, K, V> Sync for std::collections::hash_map::OccupiedError<'a, K, V> where
K: Sync,
V: Sync,`
`impl<'a, K, V> Sync for std::collections::hash_map::VacantEntry<'a, K, V> where
K: Sync,
V: Sync,`
`impl<'a, K, V> Sync for std::collections::hash_map::Values<'a, K, V> where
K: Sync,
V: Sync,`
`impl<'a, K, V> Sync for std::collections::hash_map::ValuesMut<'a, K, V> where
K: Sync,
V: Sync,`
`impl<'a, K, V, F> Sync for std::collections::btree_map::DrainFilter<'a, K, V, F> where
F: Sync,
K: Sync,
V: Sync,`
`impl<'a, K, V, F> Sync for std::collections::hash_map::DrainFilter<'a, K, V, F> where
F: Sync,
K: Sync,
V: Sync,`
`impl<'a, K, V, S> Sync for RawEntryMut<'a, K, V, S> where
K: Sync,
S: Sync,
V: Sync,`
`impl<'a, K, V, S> Sync for RawEntryBuilder<'a, K, V, S> where
K: Sync,
S: Sync,
V: Sync,`
`impl<'a, K, V, S> Sync for RawEntryBuilderMut<'a, K, V, S> where
K: Sync,
S: Sync,
V: Sync,`
`impl<'a, K, V, S> Sync for RawOccupiedEntryMut<'a, K, V, S> where
K: Sync,
V: Sync,`
`impl<'a, K, V, S> Sync for RawVacantEntryMut<'a, K, V, S> where
K: Sync,
S: Sync,
V: Sync,`
`impl<'a, P> Sync for MatchIndices<'a, P> where
<P as Pattern<'a>>::Searcher: Sync,`
`impl<'a, P> Sync for Matches<'a, P> where
<P as Pattern<'a>>::Searcher: Sync,`
`impl<'a, P> Sync for RMatchIndices<'a, P> where
<P as Pattern<'a>>::Searcher: Sync,`
`impl<'a, P> Sync for RMatches<'a, P> where
<P as Pattern<'a>>::Searcher: Sync,`
`impl<'a, P> Sync for std::str::RSplit<'a, P> where
<P as Pattern<'a>>::Searcher: Sync,`
`impl<'a, P> Sync for std::str::RSplitN<'a, P> where
<P as Pattern<'a>>::Searcher: Sync,`
`impl<'a, P> Sync for RSplitTerminator<'a, P> where
<P as Pattern<'a>>::Searcher: Sync,`
`impl<'a, P> Sync for std::str::Split<'a, P> where
<P as Pattern<'a>>::Searcher: Sync,`
`impl<'a, P> Sync for SplitInclusive<'a, P> where
<P as Pattern<'a>>::Searcher: Sync,`
`impl<'a, P> Sync for std::str::SplitN<'a, P> where
<P as Pattern<'a>>::Searcher: Sync,`
`impl<'a, P> Sync for SplitTerminator<'a, P> where
<P as Pattern<'a>>::Searcher: Sync,`
`impl<'a, T> !Sync for std::sync::mpsc::Iter<'a, T>`
`impl<'a, T> !Sync for TryIter<'a, T>`
`impl<'a, T> Sync for std::collections::binary_heap::Drain<'a, T> where
T: Sync,`
`impl<'a, T> Sync for DrainSorted<'a, T> where
T: Sync,`
`impl<'a, T> Sync for std::collections::binary_heap::Iter<'a, T> where
T: Sync,`
`impl<'a, T> Sync for PeekMut<'a, T> where
T: Sync,`
`impl<'a, T> Sync for std::collections::btree_set::Difference<'a, T> where
T: Sync,`
`impl<'a, T> Sync for std::collections::btree_set::Intersection<'a, T> where
T: Sync,`
`impl<'a, T> Sync for std::collections::btree_set::Iter<'a, T> where
T: Sync,`
`impl<'a, T> Sync for std::collections::btree_set::Range<'a, T> where
T: Sync,`
`impl<'a, T> Sync for std::collections::btree_set::SymmetricDifference<'a, T> where
T: Sync,`
`impl<'a, T> Sync for std::collections::btree_set::Union<'a, T> where
T: Sync,`
`impl<'a, T> Sync for std::collections::vec_deque::Iter<'a, T> where
T: Sync,`
`impl<'a, T> Sync for std::result::Iter<'a, T> where
T: Sync,`
`impl<'a, T> Sync for std::result::IterMut<'a, T> where
T: Sync,`
`impl<'a, T> Sync for Chunks<'a, T> where
T: Sync,`
`impl<'a, T> Sync for ChunksExact<'a, T> where
T: Sync,`
`impl<'a, T> Sync for ChunksExactMut<'a, T> where
T: Sync,`
`impl<'a, T> Sync for ChunksMut<'a, T> where
T: Sync,`
`impl<'a, T> Sync for RChunks<'a, T> where
T: Sync,`
`impl<'a, T> Sync for RChunksExact<'a, T> where
T: Sync,`
`impl<'a, T> Sync for RChunksExactMut<'a, T> where
T: Sync,`
`impl<'a, T> Sync for RChunksMut<'a, T> where
T: Sync,`
`impl<'a, T> Sync for Windows<'a, T> where
T: Sync,`
`impl<'a, T, F> !Sync for std::collections::linked_list::DrainFilter<'a, T, F>`
`impl<'a, T, F> Sync for std::collections::btree_set::DrainFilter<'a, T, F> where
F: Sync,
T: Sync,`
`impl<'a, T, F, A> Sync for std::vec::DrainFilter<'a, T, F, A> where
A: Sync,
F: Sync,
T: Sync,`
`impl<'a, T, P> Sync for GroupBy<'a, T, P> where
P: Sync,
T: Sync,`
`impl<'a, T, P> Sync for GroupByMut<'a, T, P> where
P: Sync,
T: Sync,`
`impl<'a, T, P> Sync for std::slice::RSplit<'a, T, P> where
P: Sync,
T: Sync,`
`impl<'a, T, P> Sync for RSplitMut<'a, T, P> where
P: Sync,
T: Sync,`
`impl<'a, T, P> Sync for std::slice::RSplitN<'a, T, P> where
P: Sync,
T: Sync,`
`impl<'a, T, P> Sync for RSplitNMut<'a, T, P> where
P: Sync,
T: Sync,`
`impl<'a, T, P> Sync for std::slice::Split<'a, T, P> where
P: Sync,
T: Sync,`
`impl<'a, T, P> Sync for SplitMut<'a, T, P> where
P: Sync,
T: Sync,`
`impl<'a, T, P> Sync for std::slice::SplitN<'a, T, P> where
P: Sync,
T: Sync,`
`impl<'a, T, P> Sync for SplitNMut<'a, T, P> where
P: Sync,
T: Sync,`
`impl<'a, T, S> Sync for std::collections::hash_set::Difference<'a, T, S> where
S: Sync,
T: Sync,`
`impl<'a, T, S> Sync for std::collections::hash_set::Intersection<'a, T, S> where
S: Sync,
T: Sync,`
`impl<'a, T, S> Sync for std::collections::hash_set::SymmetricDifference<'a, T, S> where
S: Sync,
T: Sync,`
`impl<'a, T, S> Sync for std::collections::hash_set::Union<'a, T, S> where
S: Sync,
T: Sync,`
`impl<'a, T, const N: usize> !Sync for ArrayWindows<'a, T, N>`
`impl<'a, T, const N: usize> Sync for ArrayChunks<'a, T, N> where
T: Sync,`
`impl<'a, T, const N: usize> Sync for ArrayChunksMut<'a, T, N> where
T: Sync,`
`impl<'b, T> !Sync for Ref<'b, T>`
`impl<'b, T> !Sync for RefMut<'b, T>`
`impl<'f> !Sync for VaListImpl<'f>`
`impl<A> Sync for std::iter::Repeat<A> where
A: Sync,`
`impl<A> Sync for std::option::IntoIter<A> where
A: Sync,`
`impl<A, B> Sync for std::iter::Chain<A, B> where
A: Sync,
B: Sync,`
`impl<A, B> Sync for Zip<A, B> where
A: Sync,
B: Sync,`
`impl<B> Sync for std::io::Lines<B> where
B: Sync,`
`impl<B> Sync for std::io::Split<B> where
B: Sync,`
`impl<B, C> Sync for ControlFlow<B, C> where
B: Sync,
C: Sync,`
`impl<F> Sync for PollFn<F> where
F: Sync,`
`impl<F> Sync for FromFn<F> where
F: Sync,`
`impl<F> Sync for OnceWith<F> where
F: Sync,`
`impl<F> Sync for RepeatWith<F> where
F: Sync,`
`impl<H> Sync for BuildHasherDefault<H> where
H: Sync,`
`impl<I> Sync for DecodeUtf16<I> where
I: Sync,`
`impl<I> Sync for Cloned<I> where
I: Sync,`
`impl<I> Sync for Copied<I> where
I: Sync,`
`impl<I> Sync for Cycle<I> where
I: Sync,`
`impl<I> Sync for Enumerate<I> where
I: Sync,`
`impl<I> Sync for Flatten<I> where
I: Sync,
<<I as Iterator>::Item as IntoIterator>::IntoIter: Sync,`
`impl<I> Sync for Fuse<I> where
I: Sync,`
`impl<I> Sync for Intersperse<I> where
I: Sync,
<I as Iterator>::Item: Sync,`
`impl<I> Sync for Peekable<I> where
I: Sync,
<I as Iterator>::Item: Sync,`
`impl<I> Sync for Skip<I> where
I: Sync,`
`impl<I> Sync for StepBy<I> where
I: Sync,`
`impl<I> Sync for std::iter::Take<I> where
I: Sync,`
`impl<I, F> Sync for FilterMap<I, F> where
F: Sync,
I: Sync,`
`impl<I, F> Sync for Inspect<I, F> where
F: Sync,
I: Sync,`
`impl<I, F> Sync for Map<I, F> where
F: Sync,
I: Sync,`
`impl<I, G> Sync for IntersperseWith<I, G> where
G: Sync,
I: Sync,
<I as Iterator>::Item: Sync,`
`impl<I, P> Sync for Filter<I, P> where
I: Sync,
P: Sync,`
`impl<I, P> Sync for MapWhile<I, P> where
I: Sync,
P: Sync,`
`impl<I, P> Sync for SkipWhile<I, P> where
I: Sync,
P: Sync,`
`impl<I, P> Sync for TakeWhile<I, P> where
I: Sync,
P: Sync,`
`impl<I, St, F> Sync for Scan<I, St, F> where
F: Sync,
I: Sync,
St: Sync,`
`impl<I, U, F> Sync for FlatMap<I, U, F> where
F: Sync,
I: Sync,
<U as IntoIterator>::IntoIter: Sync,`
`impl<Idx> Sync for std::ops::Range<Idx> where
Idx: Sync,`
`impl<Idx> Sync for RangeFrom<Idx> where
Idx: Sync,`
`impl<Idx> Sync for RangeInclusive<Idx> where
Idx: Sync,`
`impl<Idx> Sync for RangeTo<Idx> where
Idx: Sync,`
`impl<Idx> Sync for RangeToInclusive<Idx> where
Idx: Sync,`
`impl<K> Sync for std::collections::hash_set::IntoIter<K> where
K: Sync,`
`impl<K, V> Sync for std::collections::btree_map::IntoIter<K, V> where
K: Sync,
V: Sync,`
`impl<K, V> Sync for std::collections::btree_map::IntoKeys<K, V> where
K: Sync,
V: Sync,`
`impl<K, V> Sync for std::collections::btree_map::IntoValues<K, V> where
K: Sync,
V: Sync,`
`impl<K, V> Sync for std::collections::hash_map::IntoIter<K, V> where
K: Sync,
V: Sync,`
`impl<K, V> Sync for std::collections::hash_map::IntoKeys<K, V> where
K: Sync,
V: Sync,`
`impl<K, V> Sync for std::collections::hash_map::IntoValues<K, V> where
K: Sync,
V: Sync,`
`impl<K, V> Sync for BTreeMap<K, V> where
K: Sync,
V: Sync,`
`impl<K, V, S> Sync for HashMap<K, V, S> where
K: Sync,
S: Sync,
V: Sync,`
`impl<P> Sync for Pin<P> where
P: Sync,`
`impl<R> Sync for BufReader<R> where
R: Sync,`
`impl<R> Sync for std::io::Bytes<R> where
R: Sync,`
`impl<T> !Sync for OnceCell<T>`
`impl<T> !Sync for std::sync::mpsc::IntoIter<T>`
`impl<T> Sync for Bound<T> where
T: Sync,`
`impl<T> Sync for Option<T> where
T: Sync,`
`impl<T> Sync for TryLockError<T> where
T: Sync,`
`impl<T> Sync for TrySendError<T> where
T: Sync,`
`impl<T> Sync for Poll<T> where
T: Sync,`
`impl<T> Sync for [T] where
T: Sync,`
`impl<T> Sync for Reverse<T> where
T: Sync,`
`impl<T> Sync for std::collections::binary_heap::IntoIter<T> where
T: Sync,`
`impl<T> Sync for IntoIterSorted<T> where
T: Sync,`
`impl<T> Sync for std::collections::btree_set::IntoIter<T> where
T: Sync,`
`impl<T> Sync for std::collections::linked_list::IntoIter<T> where
T: Sync,`
`impl<T> Sync for BTreeSet<T> where
T: Sync,`
`impl<T> Sync for BinaryHeap<T> where
T: Sync,`
`impl<T> Sync for Pending<T> where
T: Sync,`
`impl<T> Sync for Ready<T> where
T: Sync,`
`impl<T> Sync for std::io::Cursor<T> where
T: Sync,`
`impl<T> Sync for std::io::Take<T> where
T: Sync,`
`impl<T> Sync for std::iter::Once<T> where
T: Sync,`
`impl<T> Sync for Rev<T> where
T: Sync,`
`impl<T> Sync for Discriminant<T>`
`impl<T> Sync for Wrapping<T> where
T: Sync,`
`impl<T> Sync for AssertUnwindSafe<T> where
T: Sync,`
`impl<T> Sync for std::result::IntoIter<T> where
T: Sync,`
`impl<T> Sync for SendError<T> where
T: Sync,`
`impl<T> Sync for SyncSender<T> where
T: Send,`
`impl<T> Sync for PoisonError<T> where
T: Sync,`
`impl<T> Sync for LocalKey<T>`
`impl<T> Sync for MaybeUninit<T> where
T: Sync,`
`impl<T, A> Sync for VecDeque<T, A> where
A: Sync,
T: Sync,`
`impl<T, A> Sync for std::collections::vec_deque::IntoIter<T, A> where
A: Sync,
T: Sync,`
`impl<T, A> Sync for Vec<T, A> where
A: Sync,
T: Sync,`
`impl<T, E> Sync for Result<T, E> where
E: Sync,
T: Sync,`
`impl<T, F> Sync for Successors<T, F> where
F: Sync,
T: Sync,`
`impl<T, F = fn() -> T> !Sync for Lazy<T, F>`
`impl<T, S> Sync for HashSet<T, S> where
S: Sync,
T: Sync,`
`impl<T, U> Sync for std::io::Chain<T, U> where
T: Sync,
U: Sync,`
`impl<T, const N: usize> Sync for [T; N] where
T: Sync,`
`impl<T, const N: usize> Sync for std::array::IntoIter<T, N> where
T: Sync,`
`impl<T: ?Sized> Sync for ManuallyDrop<T> where
T: Sync,`
`impl<T: ?Sized> Sync for PhantomData<T> where
T: Sync,`
`impl<T: ?Sized, A> Sync for Box<T, A> where
A: Sync,
T: Sync,`
`impl<W> Sync for BufWriter<W> where
W: Sync,`
`impl<W> Sync for IntoInnerError<W> where
W: Sync,`
`impl<W> Sync for LineWriter<W> where
W: Sync,`
`impl<Y, R> Sync for GeneratorState<Y, R> where
R: Sync,
Y: Sync,`