# Trait core::marker::Send 1.0.0[−][src]

    pub unsafe auto trait Send { }

Types that can be transferred across thread boundaries.

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

An example of a non-`Send` type is the reference-counting pointer `rc::Rc`. If two threads attempt to clone `Rc`s that point to the same reference-counted value, they might try to update the reference count at the same time, which is undefined behavior because `Rc` doesn't use atomic operations. Its cousin `sync::Arc` does use atomic operations (incurring some overhead) and thus is `Send`.

See the Nomicon for more details.

## Implementors

- `impl<T: ?Sized> !Send for NonNull<T>` | [src]

- `impl<'a, T: Sync + ?Sized> Send for &'a T` | [src]

- `impl<'a, T: Send + ?Sized> Send for &'a mut T` | [src]

- `impl<T: ?Sized> !Send for *const T` | [src]

- `impl<T: ?Sized> !Send for *mut T` | [src]

- `impl<T> Send for AtomicPtr<T>` | [src]

- `impl<T> Send for Cell<T> where T: Send,` | [src]

- `impl<T: ?Sized> Send for RefCell<T> where T: Send,` | [src]

- `impl<'a, T: Sync> Send for core::slice::Iter<'a, T>` | [src]

- `impl<'a, T: Send> Send for core::slice::IterMut<'a, T>` | [src]

- `impl Send for Waker` | [src]

- `impl !Send for LocalWaker` | [src]

- `impl Send for TaskObj` | [src]

## Auto implementors

- `impl Send for NonZeroU8` |

- `impl Send for NonZeroU16` |

- `impl Send for NonZeroU32` |

- `impl Send for NonZeroU64` |

- `impl Send for NonZeroU128` |

- `impl Send for NonZeroUsize` |

- `impl<T> Send for Wrapping<T> where T: Send,` |

- `impl Send for TryFromIntError` |

- `impl Send for ParseIntError` |

- `impl Send for ParseFloatError` |

- `impl Send for FpCategory` |

- `impl<T> Send for Discriminant<T>` |

- `impl<'a, T: ?Sized> Send for PinMut<'a, T> where T: Send,` |

- `impl<T> Send for ManuallyDrop<T> where T: Send,` |

- `impl<T: ?Sized> Send for PhantomData<T> where T: Send,` |

- `impl Send for Pinned` |

- `impl<Idx> Send for Range<Idx> where Idx: Send,` |

- `impl<Idx> Send for RangeFrom<Idx> where Idx: Send,` |

- `impl Send for RangeFull` |

- `impl<Idx> Send for RangeTo<Idx> where Idx: Send,` |

- `impl<Idx> Send for RangeInclusive<Idx> where Idx: Send,` |

- `impl<Idx> Send for RangeToInclusive<Idx> where Idx: Send,` |

- `impl<T> Send for Bound<T> where T: Send,` |

- `impl<Y, R> Send for GeneratorState<Y, R> where R: Send, Y: Send,` |

- `impl<T> Send for Reverse<T> where T: Send,` |

- `impl Send for core::cmp::Ordering` |

- `impl Send for TypeId` |

- `impl Send for TryFromSliceError` |

- `impl Send for core::ascii::EscapeDefault` |

- `impl Send for AtomicBool` |

- `impl Send for AtomicI8` |

- `impl Send for AtomicU8` |

- `impl Send for AtomicI16` |

- `impl Send for AtomicU16` |

- `impl Send for AtomicI32` |

- `impl Send for AtomicU32` |

- `impl Send for AtomicI64` |

- `impl Send for AtomicU64` |

- `impl Send for AtomicIsize` |

- `impl Send for AtomicUsize` |

- `impl Send for core::sync::atomic::Ordering` |

- `impl Send for BorrowError` |

- `impl Send for BorrowMutError` |

- `impl<'b, T> !Send for Ref<'b, T>` |

- `impl<'b, T> !Send for RefMut<'b, T>` |

- `impl<T: ?Sized> Send for UnsafeCell<T> where T: Send,` |

- `impl Send for ParseCharError` |

- `impl Send for CharTryFromError` |

- `impl<I> Send for DecodeUtf16<I> where I: Send,` |

- `impl Send for DecodeUtf16Error` |

- `impl Send for UnicodeVersion` |

- `impl<I> Send for DecodeUtf8<I> where I: Send,` |

- `impl Send for InvalidSequence` |

- `impl Send for EscapeUnicode` |

- `impl Send for core::char::EscapeDefault` |

- `impl Send for EscapeDebug` |

- `impl Send for ToLowercase` |

- `impl Send for ToUppercase` |

- `impl<'a> !Send for PanicInfo<'a>` |

- `impl<'a> Send for Location<'a>` |

- `impl<A> Send for Repeat<A> where A: Send,` |

- `impl<F> Send for RepeatWith<F> where F: Send,` |

- `impl<T> Send for Empty<T> where T: Send,` |

- `impl<T> Send for Once<T> where T: Send,` |

- `impl<T> Send for Rev<T> where T: Send,` |

- `impl<I> Send for Cloned<I> where I: Send,` |

- `impl<I> Send for Cycle<I> where I: Send,` |

- `impl<I> Send for StepBy<I> where I: Send,` |

- `impl<A, B> Send for Chain<A, B> where A: Send, B: Send,` |

- `impl<A, B> Send for Zip<A, B> where A: Send, B: Send,` |

- `impl<I, F> Send for Map<I, F> where F: Send, I: Send,` |

- `impl<I, P> Send for Filter<I, P> where I: Send, P: Send,` |

- `impl<I, F> Send for FilterMap<I, F> where F: Send, I: Send,` |

- `impl<I> Send for Enumerate<I> where I: Send,` |

- `impl<I> Send for Peekable<I> where I: Send, <I as Iterator>::Item: Send,` |

- `impl<I, P> Send for SkipWhile<I, P> where I: Send, P: Send,` |

- `impl<I, P> Send for TakeWhile<I, P> where I: Send, P: Send,` |

- `impl<I> Send for Skip<I> where I: Send,` |

- `impl<I> Send for Take<I> where I: Send,` |

- `impl<I, St, F> Send for Scan<I, St, F> where F: Send, I: Send, St: Send,` |

- `impl<I, U, F> Send for FlatMap<I, U, F> where F: Send, I: Send, <U as IntoIterator>::IntoIter: Send,` |

- `impl<I> Send for Flatten<I> where I: Send, <<I as Iterator>::Item as IntoIterator>::IntoIter: Send,` |

- `impl<I> Send for Fuse<I> where I: Send,` |

- `impl<I, F> Send for Inspect<I, F> where F: Send, I: Send,` |

- `impl<'a, A> Send for core::option::Iter<'a, A> where A: Sync,` |

- `impl<'a, A> Send for core::option::IterMut<'a, A> where A: Send,` |

- `impl<A> Send for core::option::IntoIter<A> where A: Send,` |

- `impl Send for NoneError` |

- `impl<T> Send for Option<T> where T: Send,` |

- `impl !Send for TraitObject` |

- `impl<'a, T> Send for core::result::Iter<'a, T> where T: Sync,` |

- `impl<'a, T> Send for core::result::IterMut<'a, T> where T: Send,` |

- `impl<T> Send for core::result::IntoIter<T> where T: Send,` |

- `impl<T, E> Send for Result<T, E> where E: Send, T: Send,` |

- `impl<'a, T, P> Send for core::slice::Split<'a, T, P> where P: Send, T: Sync,` |

- `impl<'a, T, P> Send for SplitMut<'a, T, P> where P: Send, T: Send,` |

- `impl<'a, T, P> Send for core::slice::RSplit<'a, T, P> where P: Send, T: Sync,` |

- `impl<'a, T, P> Send for RSplitMut<'a, T, P> where P: Send, T: Send,` |

- `impl<'a, T, P> Send for core::slice::SplitN<'a, T, P> where P: Send, T: Sync,` |

- `impl<'a, T, P> Send for core::slice::RSplitN<'a, T, P> where P: Send, T: Sync,` |

- `impl<'a, T, P> Send for SplitNMut<'a, T, P> where P: Send, T: Send,` |

- `impl<'a, T, P> Send for RSplitNMut<'a, T, P> where P: Send, T: Send,` |

- `impl<'a, T> Send for Windows<'a, T> where T: Sync,` |

- `impl<'a, T> Send for Chunks<'a, T> where T: Sync,` |

- `impl<'a, T> Send for ChunksMut<'a, T> where T: Send,` |

- `impl<'a, T> Send for ExactChunks<'a, T> where T: Sync,` |

- `impl<'a, T> Send for ExactChunksMut<'a, T> where T: Send,` |

- `impl Send for ParseBoolError` |

- `impl Send for Utf8Error` |

- `impl<'a> Send for Chars<'a>` |

- `impl<'a> Send for CharIndices<'a>` |

- `impl<'a> Send for Bytes<'a>` |

- `impl<'a, P> Send for core::str::Split<'a, P> where <P as Pattern<'a>>::Searcher: Send,` |

- `impl<'a, P> Send for core::str::RSplit<'a, P> where <P as Pattern<'a>>::Searcher: Send,` |

- `impl<'a, P> Send for SplitTerminator<'a, P> where <P as Pattern<'a>>::Searcher: Send,` |

- `impl<'a, P> Send for RSplitTerminator<'a, P> where <P as Pattern<'a>>::Searcher: Send,` |

- `impl<'a, P> Send for core::str::SplitN<'a, P> where <P as Pattern<'a>>::Searcher: Send,` |

- `impl<'a, P> Send for core::str::RSplitN<'a, P> where <P as Pattern<'a>>::Searcher: Send,` |

- `impl<'a, P> Send for MatchIndices<'a, P> where <P as Pattern<'a>>::Searcher: Send,` |

- `impl<'a, P> Send for RMatchIndices<'a, P> where <P as Pattern<'a>>::Searcher: Send,` |

- `impl<'a, P> Send for Matches<'a, P> where <P as Pattern<'a>>::Searcher: Send,` |

- `impl<'a, P> Send for RMatches<'a, P> where <P as Pattern<'a>>::Searcher: Send,` |

- `impl<'a> Send for Lines<'a>` |

- `impl<'a> Send for LinesAny<'a>` |

- `impl<'a> Send for SplitWhitespace<'a>` |

- `impl<'a> Send for EncodeUtf16<'a>` |

- `impl<'a> Send for CharSearcher<'a>` |

- `impl<'a, 'b> Send for CharSliceSearcher<'a, 'b>` |

- `impl<'a, F> Send for CharPredicateSearcher<'a, F> where F: Send,` |

- `impl<'a, 'b> Send for StrSearcher<'a, 'b>` |

- `impl Send for SearchStep` |

- `impl Send for Utf8Lossy` |

- `impl<'a> Send for Utf8LossyChunksIter<'a>` |

- `impl<'a> Send for Utf8LossyChunk<'a>` |

- `impl Send for SipHasher` |

- `impl<H> Send for BuildHasherDefault<H> where H: Send,` |

- `impl<'a, 'b> !Send for DebugStruct<'a, 'b>` |

- `impl<'a, 'b> !Send for DebugTuple<'a, 'b>` |

- `impl<'a, 'b> !Send for DebugSet<'a, 'b>` |

- `impl<'a, 'b> !Send for DebugList<'a, 'b>` |

- `impl<'a, 'b> !Send for DebugMap<'a, 'b>` |

- `impl Send for Error` |

- `impl<'a> !Send for Formatter<'a>` |

- `impl<'a> !Send for Arguments<'a>` |

- `impl Send for Alignment` |

- `impl Send for Duration` |

- `impl<'a> !Send for Context<'a>` |

- `impl Send for SpawnErrorKind` |

- `impl Send for SpawnObjError` |

- `impl<T> Send for Poll<T> where T: Send,` |

- `impl !Send for Excess` |

- `impl Send for Layout` |

- `impl Send for LayoutErr` |

- `impl Send for AllocErr` |

- `impl Send for CannotReallocInPlace` |

- `impl Send for CollectionAllocErr` |

- `impl Send for i8x16` |

- `impl Send for u8x16` |

- `impl Send for m8x16` |

- `impl Send for i16x8` |

- `impl Send for u16x8` |

- `impl Send for m16x8` |

- `impl Send for i32x4` |

- `impl Send for u32x4` |

- `impl Send for f32x4` |

- `impl Send for m32x4` |

- `impl Send for i64x2` |

- `impl Send for u64x2` |

- `impl Send for f64x2` |

- `impl Send for m64x2` |

- `impl Send for i8x2` |

- `impl Send for u8x2` |

- `impl Send for m8x2` |

- `impl Send for i8x32` |

- `impl Send for u8x32` |

- `impl Send for m8x32` |

- `impl Send for i16x16` |

- `impl Send for u16x16` |

- `impl Send for m16x16` |

- `impl Send for i32x8` |

- `impl Send for u32x8` |

- `impl Send for f32x8` |

- `impl Send for m32x8` |

- `impl Send for i64x4` |

- `impl Send for u64x4` |

- `impl Send for f64x4` |

- `impl Send for m64x4` |

- `impl Send for i16x2` |

- `impl Send for u16x2` |

- `impl Send for m16x2` |

- `impl Send for i8x4` |

- `impl Send for u8x4` |

- `impl Send for m8x4` |

- `impl Send for i8x64` |

- `impl Send for u8x64` |

- `impl Send for m1x64` |

- `impl Send for i16x32` |

- `impl Send for u16x32` |

- `impl Send for m1x32` |

- `impl Send for i32x16` |

- `impl Send for u32x16` |

- `impl Send for f32x16` |

- `impl Send for m1x16` |

- `impl Send for i64x8` |

- `impl Send for u64x8` |

- `impl Send for f64x8` |

- `impl Send for m1x8` |

- `impl Send for i8x8` |

- `impl Send for u8x8` |

- `impl Send for m8x8` |

- `impl Send for i16x4` |

- `impl Send for u16x4` |

- `impl Send for m16x4` |

- `impl Send for i32x2` |

- `impl Send for u32x2` |

- `impl Send for m32x2` |

- `impl Send for f32x2` |

- `impl Send for __m64` |

- `impl Send for __m128i` |

- `impl Send for __m128` |

- `impl Send for __m128d` |

- `impl Send for __m256i` |

- `impl Send for __m256` |

- `impl Send for __m256d` |

- `impl Send for CpuidResult` |

- `impl Send for float64x1_t` |

- `impl Send for float64x2_t` |

- `impl Send for int8x8_t` |

- `impl Send for uint8x8_t` |

- `impl Send for poly8x8_t` |

- `impl Send for int16x4_t` |

- `impl Send for uint16x4_t` |

- `impl Send for poly16x4_t` |

- `impl Send for int32x2_t` |

- `impl Send for uint32x2_t` |

- `impl Send for float32x2_t` |

- `impl Send for int64x1_t` |

- `impl Send for uint64x1_t` |

- `impl Send for int8x16_t` |

- `impl Send for uint8x16_t` |

- `impl Send for poly8x16_t` |

- `impl Send for int16x8_t` |

- `impl Send for uint16x8_t` |

- `impl Send for poly16x8_t` |

- `impl Send for int32x4_t` |

- `impl Send for uint32x4_t` |

- `impl Send for float32x4_t` |

- `impl Send for int64x2_t` |

- `impl Send for uint64x2_t` |

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