Trait std::clone::Clone

#[lang = "clone"]
pub trait Clone {
#[must_use = "cloning is often expensive and is not expected to have side effects"]
    fn clone(&self) -> Self;

    fn clone_from(&mut self, source: &Self) { ... }
}

A common trait for the ability to explicitly duplicate an object.

Differs from Copy in that Copy is implicit and extremely inexpensive, while Clone is always explicit and may or may not be expensive. In order to enforce these characteristics, Rust does not allow you to reimplement Copy, but you may reimplement Clone and run arbitrary code.

Since Clone is more general than Copy, you can automatically make anything Copy be Clone as well.

Derivable

This trait can be used with #[derive] if all fields are Clone. The derived implementation of clone calls clone on each field.

For a generic struct, #[derive] implements Clone conditionally by adding bound Clone on generic parameters.

// `derive` implements Clone for Reading<T> when T is Clone.
#[derive(Clone)]
struct Reading<T> {
    frequency: T,
}

How can I implement Clone?

Types that are Copy should have a trivial implementation of Clone. More formally: if T: Copy, x: T, and y: &T, then let x = y.clone(); is equivalent to let x = *y;. Manual implementations should be careful to uphold this invariant; however, unsafe code must not rely on it to ensure memory safety.

An example is a generic struct holding a function pointer. In this case, the implementation of Clone cannot be derived, but can be implemented as:

struct Generate<T>(fn() -> T);

impl<T> Copy for Generate<T> {}

impl<T> Clone for Generate<T> {
    fn clone(&self) -> Self {
        *self
    }
}

Additional implementors

In addition to the implementors listed below, the following types also implement Clone:

• Function item types (i.e., the distinct types defined for each function)
• Function pointer types (e.g., fn() -> i32)
• Array types, for all sizes, if the item type also implements Clone (e.g., [i32; 123456])
• Tuple types, if each component also implements Clone (e.g., (), (i32, bool))
• Closure types, if they capture no value from the environment or if all such captured values implement Clone themselves. Note that variables captured by shared reference always implement Clone (even if the referent doesn't), while variables captured by mutable reference never implement Clone.

Required methods

#[must_use = "cloning is often expensive and is not expected to have side effects"] fn clone(&self) -> Self

Returns a copy of the value.

Examples

let hello = "Hello"; // &str implements Clone

assert_eq!("Hello", hello.clone());

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Provided methods

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

a.clone_from(&b) is equivalent to a = b.clone() in functionality, but can be overridden to reuse the resources of a to avoid unnecessary allocations.

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Implementations on Foreign Types

impl Clone for __m256d

fn clone(&self) -> __m256d

impl Clone for __m256i

fn clone(&self) -> __m256i

impl Clone for __m128i

fn clone(&self) -> __m128i

impl Clone for __m128d

fn clone(&self) -> __m128d

impl Clone for __m128

fn clone(&self) -> __m128

impl<'_, T, P> Clone for SplitInclusive<'_, T, P> where
    P: Clone + FnMut(&T) -> bool, 

fn clone(&self) -> SplitInclusive<'_, T, P>

impl Clone for __m512

fn clone(&self) -> __m512

impl Clone for CpuidResult

fn clone(&self) -> CpuidResult

impl<'a, P> Clone for SplitInclusive<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Clone, 

fn clone(&self) -> SplitInclusive<'a, P>

impl Clone for __m512i

fn clone(&self) -> __m512i

impl Clone for __m64

fn clone(&self) -> __m64

impl Clone for __m512d

fn clone(&self) -> __m512d

impl Clone for __m256

fn clone(&self) -> __m256

impl Clone for PrintFmt

fn clone(&self) -> PrintFmt

impl Clone for Frame

fn clone(&self) -> Frame

impl Clone for TryDemangleError

fn clone(&self) -> TryDemangleError

impl<'_, K, V> Clone for Values<'_, K, V>

fn clone(&self) -> Values<'_, K, V>

impl<K, V, S> Clone for HashMap<K, V, S> where
    K: Clone,
    S: Clone,
    V: Clone, 

fn clone(&self) -> HashMap<K, V, S>

impl<'_, T, S> Clone for Union<'_, T, S>

fn clone(&self) -> Union<'_, T, S>

impl<'_, T, S> Clone for Difference<'_, T, S>

fn clone(&self) -> Difference<'_, T, S>

impl<'_, K, V> Clone for Keys<'_, K, V>

fn clone(&self) -> Keys<'_, K, V>

impl<'_, T, S> Clone for Intersection<'_, T, S>

fn clone(&self) -> Intersection<'_, T, S>

impl<T, S> Clone for HashSet<T, S> where
    S: Clone,
    T: Clone, 

fn clone(&self) -> HashSet<T, S>

impl<'_, K, V> Clone for Iter<'_, K, V>

fn clone(&self) -> Iter<'_, K, V>

impl<'_, K> Clone for Iter<'_, K>

fn clone(&self) -> Iter<'_, K>

impl<'_, T, S> Clone for SymmetricDifference<'_, T, S>

fn clone(&self) -> SymmetricDifference<'_, T, S>

impl Clone for CollectionAllocErr

fn clone(&self) -> CollectionAllocErr

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Implementors

impl Clone for std::cmp::Ordering

fn clone(&self) -> Ordering

impl Clone for TryReserveError

fn clone(&self) -> TryReserveError

impl Clone for Infallible

fn clone(&self) -> Infallible

impl Clone for VarError

fn clone(&self) -> VarError

impl Clone for ErrorKind

fn clone(&self) -> ErrorKind

impl Clone for SeekFrom

fn clone(&self) -> SeekFrom

impl Clone for IpAddr

fn clone(&self) -> IpAddr

impl Clone for Ipv6MulticastScope

fn clone(&self) -> Ipv6MulticastScope

impl Clone for Shutdown

fn clone(&self) -> Shutdown

impl Clone for std::net::SocketAddr

fn clone(&self) -> SocketAddr

impl Clone for FpCategory

fn clone(&self) -> FpCategory

impl Clone for IntErrorKind

fn clone(&self) -> IntErrorKind

impl Clone for SearchStep

fn clone(&self) -> SearchStep

impl Clone for std::sync::atomic::Ordering

fn clone(&self) -> Ordering

impl Clone for RecvTimeoutError

fn clone(&self) -> RecvTimeoutError

impl Clone for TryRecvError

fn clone(&self) -> TryRecvError

impl Clone for bool

fn clone(&self) -> bool

impl Clone for char

fn clone(&self) -> char

impl Clone for f32

fn clone(&self) -> f32

impl Clone for f64

fn clone(&self) -> f64

impl Clone for i128

fn clone(&self) -> i128

impl Clone for i16

fn clone(&self) -> i16

impl Clone for i32

fn clone(&self) -> i32

impl Clone for i64

fn clone(&self) -> i64

impl Clone for i8

fn clone(&self) -> i8

impl Clone for isize

fn clone(&self) -> isize

impl Clone for !

fn clone(&self) -> !

impl Clone for u128

fn clone(&self) -> u128

impl Clone for u16

fn clone(&self) -> u16

impl Clone for u32

fn clone(&self) -> u32

impl Clone for u64

fn clone(&self) -> u64

impl Clone for u8

fn clone(&self) -> u8

impl Clone for usize

fn clone(&self) -> usize

impl Clone for AllocErr

fn clone(&self) -> AllocErr

impl Clone for CannotReallocInPlace

fn clone(&self) -> CannotReallocInPlace

impl Clone for Global

fn clone(&self) -> Global

impl Clone for Layout

fn clone(&self) -> Layout

impl Clone for LayoutErr

fn clone(&self) -> LayoutErr

impl Clone for System

fn clone(&self) -> System

impl Clone for TypeId

fn clone(&self) -> TypeId

impl Clone for TryFromSliceError

fn clone(&self) -> TryFromSliceError

impl Clone for std::ascii::EscapeDefault

fn clone(&self) -> EscapeDefault

impl Clone for Box<str>

fn clone(&self) -> Box<str>

impl Clone for Box<CStr>

fn clone(&self) -> Self

impl Clone for Box<OsStr>

fn clone(&self) -> Self

impl Clone for Box<Path>

fn clone(&self) -> Self

impl Clone for CharTryFromError

fn clone(&self) -> CharTryFromError

impl Clone for DecodeUtf16Error

fn clone(&self) -> DecodeUtf16Error

impl Clone for std::char::EscapeDebug

fn clone(&self) -> EscapeDebug

impl Clone for std::char::EscapeDefault

fn clone(&self) -> EscapeDefault

impl Clone for std::char::EscapeUnicode

fn clone(&self) -> EscapeUnicode

impl Clone for ParseCharError

fn clone(&self) -> ParseCharError

impl Clone for ToLowercase

fn clone(&self) -> ToLowercase

impl Clone for ToUppercase

fn clone(&self) -> ToUppercase

impl Clone for UnicodeVersion

fn clone(&self) -> UnicodeVersion

impl Clone for DefaultHasher

fn clone(&self) -> DefaultHasher

impl Clone for RandomState

fn clone(&self) -> RandomState

impl Clone for CString

fn clone(&self) -> CString

impl Clone for FromBytesWithNulError

fn clone(&self) -> FromBytesWithNulError

impl Clone for IntoStringError

fn clone(&self) -> IntoStringError

impl Clone for NulError

fn clone(&self) -> NulError

impl Clone for OsString

fn clone(&self) -> OsString

impl Clone for Error

fn clone(&self) -> Error

impl Clone for FileType

fn clone(&self) -> FileType

impl Clone for Metadata

fn clone(&self) -> Metadata

impl Clone for OpenOptions

fn clone(&self) -> OpenOptions

impl Clone for Permissions

fn clone(&self) -> Permissions

impl Clone for SipHasher

fn clone(&self) -> SipHasher

impl Clone for PhantomPinned

fn clone(&self) -> PhantomPinned

impl Clone for AddrParseError

fn clone(&self) -> AddrParseError

impl Clone for Ipv4Addr

fn clone(&self) -> Ipv4Addr

impl Clone for Ipv6Addr

fn clone(&self) -> Ipv6Addr

impl Clone for SocketAddrV4

fn clone(&self) -> SocketAddrV4

impl Clone for SocketAddrV6

fn clone(&self) -> SocketAddrV6

impl Clone for NonZeroI128

fn clone(&self) -> NonZeroI128

impl Clone for NonZeroI16

fn clone(&self) -> NonZeroI16

impl Clone for NonZeroI32

fn clone(&self) -> NonZeroI32

impl Clone for NonZeroI64

fn clone(&self) -> NonZeroI64

impl Clone for NonZeroI8

fn clone(&self) -> NonZeroI8

impl Clone for NonZeroIsize

fn clone(&self) -> NonZeroIsize

impl Clone for NonZeroU128

fn clone(&self) -> NonZeroU128

impl Clone for NonZeroU16

fn clone(&self) -> NonZeroU16

impl Clone for NonZeroU32

fn clone(&self) -> NonZeroU32

impl Clone for NonZeroU64

fn clone(&self) -> NonZeroU64

impl Clone for NonZeroU8

fn clone(&self) -> NonZeroU8

impl Clone for NonZeroUsize

fn clone(&self) -> NonZeroUsize

impl Clone for ParseFloatError

fn clone(&self) -> ParseFloatError

impl Clone for ParseIntError

fn clone(&self) -> ParseIntError

impl Clone for TryFromIntError

fn clone(&self) -> TryFromIntError

impl Clone for RangeFull

fn clone(&self) -> RangeFull

impl Clone for NoneError

fn clone(&self) -> NoneError

impl Clone for stat

fn clone(&self) -> stat

impl Clone for std::os::unix::net::SocketAddr

fn clone(&self) -> SocketAddr

impl Clone for PathBuf

fn clone(&self) -> PathBuf

impl Clone for StripPrefixError

fn clone(&self) -> StripPrefixError

impl Clone for ExitCode

fn clone(&self) -> ExitCode

impl Clone for ExitStatus

fn clone(&self) -> ExitStatus

impl Clone for Output

fn clone(&self) -> Output

impl Clone for TraitObject

fn clone(&self) -> TraitObject

impl Clone for ParseBoolError

fn clone(&self) -> ParseBoolError

impl Clone for Utf8Error

fn clone(&self) -> Utf8Error

impl Clone for FromUtf8Error

fn clone(&self) -> FromUtf8Error

impl Clone for String

fn clone(&self) -> String

fn clone_from(&mut self, source: &String)

impl Clone for RecvError

fn clone(&self) -> RecvError

impl Clone for WaitTimeoutResult

fn clone(&self) -> WaitTimeoutResult

impl Clone for RawWakerVTable

fn clone(&self) -> RawWakerVTable

impl Clone for Waker

fn clone(&self) -> Waker

impl Clone for AccessError

fn clone(&self) -> AccessError

impl Clone for Thread

fn clone(&self) -> Thread

impl Clone for ThreadId

fn clone(&self) -> ThreadId

impl Clone for Duration

fn clone(&self) -> Duration

impl Clone for Instant

fn clone(&self) -> Instant

impl Clone for SystemTime

fn clone(&self) -> SystemTime

impl Clone for SystemTimeError

fn clone(&self) -> SystemTimeError

impl<'_, A> Clone for std::option::Iter<'_, A>

fn clone(&self) -> Iter<'_, A>

impl<'_, B> Clone for Cow<'_, B> where
    B: ToOwned + ?Sized, 

fn clone(&self) -> Cow<'_, B>

fn clone_from(&mut self, source: &Cow<'_, B>)

impl<'_, K> Clone for std::collections::hash_set::Iter<'_, K>

fn clone(&self) -> Self

impl<'_, K, V> Clone for std::collections::btree_map::Iter<'_, K, V>

fn clone(&self) -> Iter<'_, K, V>

impl<'_, K, V> Clone for std::collections::btree_map::Keys<'_, K, V>

fn clone(&self) -> Keys<'_, K, V>

impl<'_, K, V> Clone for std::collections::btree_map::Range<'_, K, V>

fn clone(&self) -> Range<'_, K, V>

impl<'_, K, V> Clone for std::collections::btree_map::Values<'_, K, V>

fn clone(&self) -> Values<'_, K, V>

impl<'_, K, V> Clone for std::collections::hash_map::Iter<'_, K, V>

fn clone(&self) -> Self

impl<'_, K, V> Clone for std::collections::hash_map::Keys<'_, K, V>

fn clone(&self) -> Self

impl<'_, K, V> Clone for std::collections::hash_map::Values<'_, K, V>

fn clone(&self) -> Self

impl<'_, T> Clone for &'_ T where
    T: ?Sized, 

fn clone(&self) -> &'_ T

impl<'_, T> Clone for std::collections::binary_heap::Iter<'_, T>

fn clone(&self) -> Iter<'_, T>

impl<'_, T> Clone for std::collections::btree_set::Difference<'_, T>

fn clone(&self) -> Difference<'_, T>

impl<'_, T> Clone for std::collections::btree_set::Intersection<'_, T>

fn clone(&self) -> Intersection<'_, T>

impl<'_, T> Clone for std::collections::btree_set::Iter<'_, T>

fn clone(&self) -> Iter<'_, T>

impl<'_, T> Clone for std::collections::btree_set::Range<'_, T>

fn clone(&self) -> Range<'_, T>

impl<'_, T> Clone for std::collections::btree_set::SymmetricDifference<'_, T>

fn clone(&self) -> SymmetricDifference<'_, T>

impl<'_, T> Clone for std::collections::btree_set::Union<'_, T>

fn clone(&self) -> Union<'_, T>

impl<'_, T> Clone for std::collections::linked_list::Iter<'_, T>

fn clone(&self) -> Iter<'_, T>

impl<'_, T> Clone for std::collections::vec_deque::Iter<'_, T>

fn clone(&self) -> Iter<'_, T>

impl<'_, T> Clone for std::result::Iter<'_, T>

fn clone(&self) -> Iter<'_, T>

impl<'_, T> Clone for Chunks<'_, T>

fn clone(&self) -> Chunks<'_, T>

impl<'_, T> Clone for ChunksExact<'_, T>

fn clone(&self) -> ChunksExact<'_, T>

impl<'_, T> Clone for std::slice::Iter<'_, T>

fn clone(&self) -> Iter<'_, T>

impl<'_, T> Clone for RChunks<'_, T>

fn clone(&self) -> RChunks<'_, T>

impl<'_, T> Clone for Windows<'_, T>

fn clone(&self) -> Windows<'_, T>

impl<'_, T, P> Clone for std::slice::Split<'_, T, P> where
    P: Clone + FnMut(&T) -> bool, 

fn clone(&self) -> Split<'_, T, P>

impl<'_, T, S> Clone for std::collections::hash_set::Difference<'_, T, S>

fn clone(&self) -> Self

impl<'_, T, S> Clone for std::collections::hash_set::Intersection<'_, T, S>

fn clone(&self) -> Self

impl<'_, T, S> Clone for std::collections::hash_set::SymmetricDifference<'_, T, S>

fn clone(&self) -> Self

impl<'_, T, S> Clone for std::collections::hash_set::Union<'_, T, S>

fn clone(&self) -> Self

impl<'a> Clone for Component<'a>

fn clone(&self) -> Component<'a>

impl<'a> Clone for Prefix<'a>

fn clone(&self) -> Prefix<'a>

impl<'a> Clone for std::error::Chain<'a>

fn clone(&self) -> Chain<'a>

impl<'a> Clone for Arguments<'a>

fn clone(&self) -> Arguments<'a>

impl<'a> Clone for EncodeWide<'a>

fn clone(&self) -> EncodeWide<'a>

impl<'a> Clone for Ancestors<'a>

fn clone(&self) -> Ancestors<'a>

impl<'a> Clone for Components<'a>

fn clone(&self) -> Components<'a>

impl<'a> Clone for std::path::Iter<'a>

fn clone(&self) -> Iter<'a>

impl<'a> Clone for PrefixComponent<'a>

fn clone(&self) -> PrefixComponent<'a>

impl<'a> Clone for CharSearcher<'a>

fn clone(&self) -> CharSearcher<'a>

impl<'a> Clone for Bytes<'a>

fn clone(&self) -> Bytes<'a>

impl<'a> Clone for CharIndices<'a>

fn clone(&self) -> CharIndices<'a>

impl<'a> Clone for Chars<'a>

fn clone(&self) -> Chars<'a>

impl<'a> Clone for EncodeUtf16<'a>

fn clone(&self) -> EncodeUtf16<'a>

impl<'a> Clone for std::str::EscapeDebug<'a>

fn clone(&self) -> EscapeDebug<'a>

impl<'a> Clone for std::str::EscapeDefault<'a>

fn clone(&self) -> EscapeDefault<'a>

impl<'a> Clone for std::str::EscapeUnicode<'a>

fn clone(&self) -> EscapeUnicode<'a>

impl<'a> Clone for Lines<'a>

fn clone(&self) -> Lines<'a>

impl<'a> Clone for LinesAny<'a>

fn clone(&self) -> LinesAny<'a>

impl<'a> Clone for SplitAsciiWhitespace<'a>

fn clone(&self) -> SplitAsciiWhitespace<'a>

impl<'a> Clone for SplitWhitespace<'a>

fn clone(&self) -> SplitWhitespace<'a>

impl<'a, 'b> Clone for CharSliceSearcher<'a, 'b>

fn clone(&self) -> CharSliceSearcher<'a, 'b>

impl<'a, 'b> Clone for StrSearcher<'a, 'b>

fn clone(&self) -> StrSearcher<'a, 'b>

impl<'a, F> Clone for CharPredicateSearcher<'a, F> where
    F: Clone + FnMut(char) -> bool, 

fn clone(&self) -> CharPredicateSearcher<'a, F>

impl<'a, P> Clone for MatchIndices<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Clone, 

fn clone(&self) -> MatchIndices<'a, P>

impl<'a, P> Clone for Matches<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Clone, 

fn clone(&self) -> Matches<'a, P>

impl<'a, P> Clone for RMatchIndices<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Clone, 

fn clone(&self) -> RMatchIndices<'a, P>

impl<'a, P> Clone for RMatches<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Clone, 

fn clone(&self) -> RMatches<'a, P>

impl<'a, P> Clone for std::str::RSplit<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Clone, 

fn clone(&self) -> RSplit<'a, P>

impl<'a, P> Clone for RSplitN<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Clone, 

fn clone(&self) -> RSplitN<'a, P>

impl<'a, P> Clone for RSplitTerminator<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Clone, 

fn clone(&self) -> RSplitTerminator<'a, P>

impl<'a, P> Clone for std::str::Split<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Clone, 

fn clone(&self) -> Split<'a, P>

impl<'a, P> Clone for SplitN<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Clone, 

fn clone(&self) -> SplitN<'a, P>

impl<'a, P> Clone for SplitTerminator<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Clone, 

fn clone(&self) -> SplitTerminator<'a, P>

impl<'a, T> Clone for RChunksExact<'a, T>

fn clone(&self) -> RChunksExact<'a, T>

impl<'a, T, P> Clone for std::slice::RSplit<'a, T, P> where
    P: Clone + FnMut(&T) -> bool,
    T: 'a + Clone, 

fn clone(&self) -> RSplit<'a, T, P>

impl<'f> Clone for VaListImpl<'f>

fn clone(&self) -> VaListImpl<'f>

impl<A> Clone for Repeat<A> where
    A: Clone, 

fn clone(&self) -> Repeat<A>

impl<A> Clone for std::option::IntoIter<A> where
    A: Clone, 

fn clone(&self) -> IntoIter<A>

impl<A, B> Clone for std::iter::Chain<A, B> where
    A: Clone,
    B: Clone, 

fn clone(&self) -> Chain<A, B>

impl<A, B> Clone for Zip<A, B> where
    A: Clone,
    B: Clone, 

fn clone(&self) -> Zip<A, B>

impl<F> Clone for FromFn<F> where
    F: Clone, 

fn clone(&self) -> FromFn<F>

impl<F> Clone for OnceWith<F> where
    F: Clone, 

fn clone(&self) -> OnceWith<F>

impl<F> Clone for RepeatWith<F> where
    F: Clone, 

fn clone(&self) -> RepeatWith<F>

impl<H> Clone for BuildHasherDefault<H>

fn clone(&self) -> BuildHasherDefault<H>

impl<I> Clone for DecodeUtf16<I> where
    I: Clone + Iterator<Item = u16>, 

fn clone(&self) -> DecodeUtf16<I>

impl<I> Clone for Cloned<I> where
    I: Clone, 

fn clone(&self) -> Cloned<I>

impl<I> Clone for Copied<I> where
    I: Clone, 

fn clone(&self) -> Copied<I>

impl<I> Clone for Cycle<I> where
    I: Clone, 

fn clone(&self) -> Cycle<I>

impl<I> Clone for Enumerate<I> where
    I: Clone, 

fn clone(&self) -> Enumerate<I>

impl<I> Clone for Fuse<I> where
    I: Clone, 

fn clone(&self) -> Fuse<I>

impl<I> Clone for Peekable<I> where
    I: Clone + Iterator,
    <I as Iterator>::Item: Clone, 

fn clone(&self) -> Peekable<I>

impl<I> Clone for Skip<I> where
    I: Clone, 

fn clone(&self) -> Skip<I>

impl<I> Clone for StepBy<I> where
    I: Clone, 

fn clone(&self) -> StepBy<I>

impl<I> Clone for Take<I> where
    I: Clone, 

fn clone(&self) -> Take<I>

impl<I, F> Clone for FilterMap<I, F> where
    F: Clone,
    I: Clone, 

fn clone(&self) -> FilterMap<I, F>

impl<I, F> Clone for Inspect<I, F> where
    F: Clone,
    I: Clone, 

fn clone(&self) -> Inspect<I, F>

impl<I, F> Clone for Map<I, F> where
    F: Clone,
    I: Clone, 

fn clone(&self) -> Map<I, F>

impl<I, P> Clone for Filter<I, P> where
    I: Clone,
    P: Clone, 

fn clone(&self) -> Filter<I, P>

impl<I, P> Clone for MapWhile<I, P> where
    I: Clone,
    P: Clone, 

fn clone(&self) -> MapWhile<I, P>

impl<I, P> Clone for SkipWhile<I, P> where
    I: Clone,
    P: Clone, 

fn clone(&self) -> SkipWhile<I, P>

impl<I, P> Clone for TakeWhile<I, P> where
    I: Clone,
    P: Clone, 

fn clone(&self) -> TakeWhile<I, P>

impl<I, St, F> Clone for Scan<I, St, F> where
    F: Clone,
    I: Clone,
    St: Clone, 

fn clone(&self) -> Scan<I, St, F>

impl<I, U> Clone for Flatten<I> where
    I: Clone + Iterator,
    U: Clone + Iterator,
    <I as Iterator>::Item: IntoIterator,
    <<I as Iterator>::Item as IntoIterator>::IntoIter == U,
    <<I as Iterator>::Item as IntoIterator>::Item == <U as Iterator>::Item, 

fn clone(&self) -> Flatten<I>

impl<I, U, F> Clone for FlatMap<I, U, F> where
    F: Clone,
    I: Clone,
    U: Clone + IntoIterator,
    <U as IntoIterator>::IntoIter: Clone, 

fn clone(&self) -> FlatMap<I, U, F>

impl<Idx> Clone for std::ops::Range<Idx> where
    Idx: Clone, 

fn clone(&self) -> Range<Idx>

impl<Idx> Clone for RangeFrom<Idx> where
    Idx: Clone, 

fn clone(&self) -> RangeFrom<Idx>

impl<Idx> Clone for RangeInclusive<Idx> where
    Idx: Clone, 

fn clone(&self) -> RangeInclusive<Idx>

impl<Idx> Clone for RangeTo<Idx> where
    Idx: Clone, 

fn clone(&self) -> RangeTo<Idx>

impl<Idx> Clone for RangeToInclusive<Idx> where
    Idx: Clone, 

fn clone(&self) -> RangeToInclusive<Idx>

impl<K, V> Clone for BTreeMap<K, V> where
    K: Clone,
    V: Clone, 

fn clone(&self) -> BTreeMap<K, V>

fn clone_from(&mut self, other: &BTreeMap<K, V>)

impl<K: Clone, V: Clone, S: Clone> Clone for std::collections::HashMap<K, V, S>

fn clone(&self) -> HashMap<K, V, S>

impl<P> Clone for Pin<P> where
    P: Clone, 

fn clone(&self) -> Pin<P>

impl<T> Clone for Bound<T> where
    T: Clone, 

fn clone(&self) -> Bound<T>

impl<T> Clone for Option<T> where
    T: Clone, 

fn clone(&self) -> Option<T>

fn clone_from(&mut self, source: &Option<T>)

impl<T> Clone for Poll<T> where
    T: Clone, 

fn clone(&self) -> Poll<T>

impl<T> Clone for *const T where
    T: ?Sized, 

fn clone(&self) -> *const T

impl<T> Clone for *mut T where
    T: ?Sized, 

fn clone(&self) -> *mut T

impl<T> Clone for Box<[T]> where
    T: Clone, 

fn clone(&self) -> Box<[T]>

impl<T> Clone for Box<T> where
    T: Clone, 

fn clone(&self) -> Box<T>

Returns a new box with a clone() of this box's contents.

Examples

let x = Box::new(5);
let y = x.clone();

// The value is the same
assert_eq!(x, y);

// But they are unique objects
assert_ne!(&*x as *const i32, &*y as *const i32);

fn clone_from(&mut self, source: &Box<T>)

Copies source's contents into self without creating a new allocation.

Examples

let x = Box::new(5);
let mut y = Box::new(10);
let yp: *const i32 = &*y;

y.clone_from(&x);

// The value is the same
assert_eq!(x, y);

// And no allocation occurred
assert_eq!(yp, &*y);

impl<T> Clone for Cell<T> where
    T: Copy, 

fn clone(&self) -> Cell<T>

impl<T> Clone for RefCell<T> where
    T: Clone, 

fn clone(&self) -> RefCell<T>

Panics

Panics if the value is currently mutably borrowed.

impl<T> Clone for Reverse<T> where
    T: Clone, 

fn clone(&self) -> Reverse<T>

impl<T> Clone for std::collections::binary_heap::IntoIter<T> where
    T: Clone, 

fn clone(&self) -> IntoIter<T>

impl<T> Clone for IntoIterSorted<T> where
    T: Clone, 

fn clone(&self) -> IntoIterSorted<T>

impl<T> Clone for std::collections::linked_list::IntoIter<T> where
    T: Clone, 

fn clone(&self) -> IntoIter<T>

impl<T> Clone for BTreeSet<T> where
    T: Clone, 

fn clone(&self) -> BTreeSet<T>

fn clone_from(&mut self, other: &BTreeSet<T>)

impl<T> Clone for BinaryHeap<T> where
    T: Clone, 

fn clone(&self) -> BinaryHeap<T>

fn clone_from(&mut self, source: &BinaryHeap<T>)

impl<T> Clone for LinkedList<T> where
    T: Clone, 

fn clone(&self) -> LinkedList<T>

fn clone_from(&mut self, other: &LinkedList<T>)

impl<T> Clone for VecDeque<T> where
    T: Clone, 

fn clone(&self) -> VecDeque<T>

fn clone_from(&mut self, other: &VecDeque<T>)

impl<T> Clone for std::collections::vec_deque::IntoIter<T> where
    T: Clone, 

fn clone(&self) -> IntoIter<T>

impl<T> Clone for Empty<T>

fn clone(&self) -> Empty<T>

impl<T> Clone for Once<T> where
    T: Clone, 

fn clone(&self) -> Once<T>

impl<T> Clone for Rev<T> where
    T: Clone, 

fn clone(&self) -> Rev<T>

impl<T> Clone for PhantomData<T> where
    T: ?Sized, 

fn clone(&self) -> PhantomData<T>

impl<T> Clone for Discriminant<T>

fn clone(&self) -> Discriminant<T>

impl<T> Clone for ManuallyDrop<T> where
    T: Clone + ?Sized, 

fn clone(&self) -> ManuallyDrop<T>

impl<T> Clone for Wrapping<T> where
    T: Clone, 

fn clone(&self) -> Wrapping<T>

impl<T> Clone for NonNull<T> where
    T: ?Sized, 

fn clone(&self) -> NonNull<T>

impl<T> Clone for Rc<T> where
    T: ?Sized, 

fn clone(&self) -> Rc<T>

Makes a clone of the Rc pointer.

This creates another pointer to the same allocation, increasing the strong reference count.

Examples

use std::rc::Rc;

let five = Rc::new(5);

let _ = Rc::clone(&five);

impl<T> Clone for std::rc::Weak<T> where
    T: ?Sized, 

fn clone(&self) -> Weak<T>

Makes a clone of the Weak pointer that points to the same allocation.

Examples

use std::rc::{Rc, Weak};

let weak_five = Rc::downgrade(&Rc::new(5));

let _ = Weak::clone(&weak_five);

impl<T> Clone for std::result::IntoIter<T> where
    T: Clone, 

fn clone(&self) -> IntoIter<T>

impl<T> Clone for Sender<T>

fn clone(&self) -> Sender<T>

impl<T> Clone for SyncSender<T>

fn clone(&self) -> SyncSender<T>

impl<T> Clone for Arc<T> where
    T: ?Sized, 

fn clone(&self) -> Arc<T>

Makes a clone of the Arc pointer.

This creates another pointer to the same allocation, increasing the strong reference count.

Examples

use std::sync::Arc;

let five = Arc::new(5);

let _ = Arc::clone(&five);

impl<T> Clone for std::sync::Weak<T> where
    T: ?Sized, 

fn clone(&self) -> Weak<T>

Makes a clone of the Weak pointer that points to the same allocation.

Examples

use std::sync::{Arc, Weak};

let weak_five = Arc::downgrade(&Arc::new(5));

let _ = Weak::clone(&weak_five);

impl<T> Clone for std::vec::IntoIter<T> where
    T: Clone, 

fn clone(&self) -> IntoIter<T>

impl<T> Clone for Vec<T> where
    T: Clone, 

fn clone(&self) -> Vec<T>

fn clone_from(&mut self, other: &Vec<T>)

impl<T> Clone for MaybeUninit<T> where
    T: Copy, 

fn clone(&self) -> MaybeUninit<T>

impl<T, E> Clone for Result<T, E> where
    E: Clone,
    T: Clone, 

fn clone(&self) -> Result<T, E>

fn clone_from(&mut self, source: &Result<T, E>)

impl<T, F> Clone for Successors<T, F> where
    F: Clone,
    T: Clone, 

fn clone(&self) -> Successors<T, F>

impl<T: Clone> Clone for TrySendError<T>

fn clone(&self) -> TrySendError<T>

impl<T: Clone> Clone for Cursor<T>

fn clone(&self) -> Cursor<T>

impl<T: Clone> Clone for SendError<T>

fn clone(&self) -> SendError<T>

impl<T: Clone, S: Clone> Clone for std::collections::HashSet<T, S>

fn clone(&self) -> HashSet<T, S>

impl<Y, R> Clone for GeneratorState<Y, R> where
    R: Clone,
    Y: Clone, 

fn clone(&self) -> GeneratorState<Y, R>

impl<const N: usize, T> Clone for std::array::IntoIter<T, N> where
    T: Clone,
    [T; N]: LengthAtMost32, 

fn clone(&self) -> IntoIter<T, N>

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