Trait bitflags::__core::prelude::v1::Clone
[−]
[src]
pub trait Clone { fn clone(&self) -> Self; fn clone_from(&mut self, source: &Self) { ... } }
A common trait for cloning an object.
This trait can be used with #[derive]
.
Required Methods
fn clone(&self) -> Self
Returns a copy of the value.
Examples
let hello = "Hello"; // &str implements Clone assert_eq!("Hello", hello.clone());
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.
Implementors
impl Clone for ExchangeHeapSingleton
impl<T> Clone for Box<T> where T: Clone
impl Clone for Box<str>
impl<T> Clone for Box<[T]> where T: Clone
impl<T> Clone for Arc<T> where T: ?Sized
impl<T> Clone for Weak<T> where T: ?Sized
impl<T> Clone for Rc<T> where T: ?Sized
impl<T> Clone for Weak<T> where T: ?Sized
impl<T> Clone for Wrapping<T> where T: Clone
impl Clone for FpCategory
impl Clone for ParseIntError
impl Clone for IntErrorKind
impl<T> Clone for NonZero<T> where T: Zeroable + Clone
impl<T> Clone for *const T where T: ?Sized
impl<T> Clone for *mut T where T: ?Sized
impl<Ret> Clone for fn() -> Ret
impl<Ret> Clone for extern "C" fn() -> Ret
impl<Ret> Clone for unsafe fn() -> Ret
impl<Ret> Clone for unsafe extern "C" fn() -> Ret
impl<Ret, A> Clone for fn(A) -> Ret
impl<Ret, A> Clone for extern "C" fn(A) -> Ret
impl<Ret, A> Clone for unsafe fn(A) -> Ret
impl<Ret, A> Clone for unsafe extern "C" fn(A) -> Ret
impl<Ret, A, B> Clone for fn(A, B) -> Ret
impl<Ret, A, B> Clone for extern "C" fn(A, B) -> Ret
impl<Ret, A, B> Clone for unsafe fn(A, B) -> Ret
impl<Ret, A, B> Clone for unsafe extern "C" fn(A, B) -> Ret
impl<Ret, A, B, C> Clone for fn(A, B, C) -> Ret
impl<Ret, A, B, C> Clone for extern "C" fn(A, B, C) -> Ret
impl<Ret, A, B, C> Clone for unsafe fn(A, B, C) -> Ret
impl<Ret, A, B, C> Clone for unsafe extern "C" fn(A, B, C) -> Ret
impl<Ret, A, B, C, D> Clone for fn(A, B, C, D) -> Ret
impl<Ret, A, B, C, D> Clone for extern "C" fn(A, B, C, D) -> Ret
impl<Ret, A, B, C, D> Clone for unsafe fn(A, B, C, D) -> Ret
impl<Ret, A, B, C, D> Clone for unsafe extern "C" fn(A, B, C, D) -> Ret
impl<Ret, A, B, C, D, E> Clone for fn(A, B, C, D, E) -> Ret
impl<Ret, A, B, C, D, E> Clone for extern "C" fn(A, B, C, D, E) -> Ret
impl<Ret, A, B, C, D, E> Clone for unsafe fn(A, B, C, D, E) -> Ret
impl<Ret, A, B, C, D, E> Clone for unsafe extern "C" fn(A, B, C, D, E) -> Ret
impl<Ret, A, B, C, D, E, F> Clone for fn(A, B, C, D, E, F) -> Ret
impl<Ret, A, B, C, D, E, F> Clone for extern "C" fn(A, B, C, D, E, F) -> Ret
impl<Ret, A, B, C, D, E, F> Clone for unsafe fn(A, B, C, D, E, F) -> Ret
impl<Ret, A, B, C, D, E, F> Clone for unsafe extern "C" fn(A, B, C, D, E, F) -> Ret
impl<Ret, A, B, C, D, E, F, G> Clone for fn(A, B, C, D, E, F, G) -> Ret
impl<Ret, A, B, C, D, E, F, G> Clone for extern "C" fn(A, B, C, D, E, F, G) -> Ret
impl<Ret, A, B, C, D, E, F, G> Clone for unsafe fn(A, B, C, D, E, F, G) -> Ret
impl<Ret, A, B, C, D, E, F, G> Clone for unsafe extern "C" fn(A, B, C, D, E, F, G) -> Ret
impl<Ret, A, B, C, D, E, F, G, H> Clone for fn(A, B, C, D, E, F, G, H) -> Ret
impl<Ret, A, B, C, D, E, F, G, H> Clone for extern "C" fn(A, B, C, D, E, F, G, H) -> Ret
impl<Ret, A, B, C, D, E, F, G, H> Clone for unsafe fn(A, B, C, D, E, F, G, H) -> Ret
impl<Ret, A, B, C, D, E, F, G, H> Clone for unsafe extern "C" fn(A, B, C, D, E, F, G, H) -> Ret
impl<Ret, A, B, C, D, E, F, G, H, I> Clone for fn(A, B, C, D, E, F, G, H, I) -> Ret
impl<Ret, A, B, C, D, E, F, G, H, I> Clone for extern "C" fn(A, B, C, D, E, F, G, H, I) -> Ret
impl<Ret, A, B, C, D, E, F, G, H, I> Clone for unsafe fn(A, B, C, D, E, F, G, H, I) -> Ret
impl<Ret, A, B, C, D, E, F, G, H, I> Clone for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I) -> Ret
impl<Ret, A, B, C, D, E, F, G, H, I, J> Clone for fn(A, B, C, D, E, F, G, H, I, J) -> Ret
impl<Ret, A, B, C, D, E, F, G, H, I, J> Clone for extern "C" fn(A, B, C, D, E, F, G, H, I, J) -> Ret
impl<Ret, A, B, C, D, E, F, G, H, I, J> Clone for unsafe fn(A, B, C, D, E, F, G, H, I, J) -> Ret
impl<Ret, A, B, C, D, E, F, G, H, I, J> Clone for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J) -> Ret
impl<Ret, A, B, C, D, E, F, G, H, I, J, K> Clone for fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret
impl<Ret, A, B, C, D, E, F, G, H, I, J, K> Clone for extern "C" fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret
impl<Ret, A, B, C, D, E, F, G, H, I, J, K> Clone for unsafe fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret
impl<Ret, A, B, C, D, E, F, G, H, I, J, K> Clone for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret
impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Clone for fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret
impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Clone for extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret
impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Clone for unsafe fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret
impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Clone for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret
impl<T> Clone for Shared<T> where T: ?Sized
impl<T> Clone for PhantomData<T> where T: ?Sized
impl Clone for RangeFull
impl<Idx> Clone for Range<Idx> where Idx: Clone
impl<Idx> Clone for RangeFrom<Idx> where Idx: Clone
impl<Idx> Clone for RangeTo<Idx> where Idx: Clone
impl Clone for Ordering
impl<'a, T> Clone for &'a T where T: ?Sized
impl Clone for isize
impl Clone for i8
impl Clone for i16
impl Clone for i32
impl Clone for i64
impl Clone for usize
impl Clone for u8
impl Clone for u16
impl Clone for u32
impl Clone for u64
impl Clone for f32
impl Clone for f64
impl Clone for ()
impl Clone for bool
impl Clone for char
impl Clone for TypeId
impl<T> Clone for [T; 0] where T: Copy
impl<T> Clone for [T; 1] where T: Copy
impl<T> Clone for [T; 2] where T: Copy
impl<T> Clone for [T; 3] where T: Copy
impl<T> Clone for [T; 4] where T: Copy
impl<T> Clone for [T; 5] where T: Copy
impl<T> Clone for [T; 6] where T: Copy
impl<T> Clone for [T; 7] where T: Copy
impl<T> Clone for [T; 8] where T: Copy
impl<T> Clone for [T; 9] where T: Copy
impl<T> Clone for [T; 10] where T: Copy
impl<T> Clone for [T; 11] where T: Copy
impl<T> Clone for [T; 12] where T: Copy
impl<T> Clone for [T; 13] where T: Copy
impl<T> Clone for [T; 14] where T: Copy
impl<T> Clone for [T; 15] where T: Copy
impl<T> Clone for [T; 16] where T: Copy
impl<T> Clone for [T; 17] where T: Copy
impl<T> Clone for [T; 18] where T: Copy
impl<T> Clone for [T; 19] where T: Copy
impl<T> Clone for [T; 20] where T: Copy
impl<T> Clone for [T; 21] where T: Copy
impl<T> Clone for [T; 22] where T: Copy
impl<T> Clone for [T; 23] where T: Copy
impl<T> Clone for [T; 24] where T: Copy
impl<T> Clone for [T; 25] where T: Copy
impl<T> Clone for [T; 26] where T: Copy
impl<T> Clone for [T; 27] where T: Copy
impl<T> Clone for [T; 28] where T: Copy
impl<T> Clone for [T; 29] where T: Copy
impl<T> Clone for [T; 30] where T: Copy
impl<T> Clone for [T; 31] where T: Copy
impl<T> Clone for [T; 32] where T: Copy
impl Clone for Ordering
impl<T> Clone for Cell<T> where T: Copy
impl Clone for BorrowState
impl<T> Clone for RefCell<T> where T: Clone
impl<'b> Clone for BorrowRef<'b>
impl Clone for EscapeUnicode
impl Clone for EscapeUnicodeState
impl Clone for EscapeDefault
impl Clone for EscapeDefaultState
impl<T> Clone for Rev<T> where T: Clone
impl<I> Clone for Cloned<I> where I: Clone
impl<I> Clone for Cycle<I> where I: Clone
impl<A, B> Clone for Chain<A, B> where A: Clone, B: Clone
impl Clone for ChainState
impl<A, B> Clone for Zip<A, B> where B: Clone, A: Clone
impl<I, F> Clone for Map<I, F> where I: Clone, F: Clone
impl<I, P> Clone for Filter<I, P> where P: Clone, I: Clone
impl<I, F> Clone for FilterMap<I, F> where I: Clone, F: Clone
impl<I> Clone for Enumerate<I> where I: Clone
impl<I> Clone for Peekable<I> where I: Clone + Iterator, I::Item: Clone
impl<I, P> Clone for SkipWhile<I, P> where I: Clone, P: Clone
impl<I, P> Clone for TakeWhile<I, P> where I: Clone, P: Clone
impl<I> Clone for Skip<I> where I: Clone
impl<I> Clone for Take<I> where I: Clone
impl<I, St, F> Clone for Scan<I, St, F> where I: Clone, F: Clone, St: Clone
impl<I, U, F> Clone for FlatMap<I, U, F> where U: Clone + IntoIterator, F: Clone, I: Clone, U::IntoIter: Clone
impl<I> Clone for Fuse<I> where I: Clone
impl<I, F> Clone for Inspect<I, F> where I: Clone, F: Clone
impl<A, R> Clone for StepBy<A, R> where A: Clone, R: Clone
impl<A> Clone for RangeInclusive<A> where A: Clone
impl<A> Clone for Repeat<A> where A: Clone
impl<T> Clone for Empty<T>
impl<T> Clone for Once<T> where T: Clone
impl<T> Clone for Option<T> where T: Clone
impl<A> Clone for Item<A> where A: Clone
impl<'a, A> Clone for Iter<'a, A>
impl<A> Clone for IntoIter<A> where A: Clone
impl<T> Clone for Slice<T>
impl Clone for TraitObject
impl<T, E> Clone for Result<T, E> where T: Clone, E: Clone
impl<'a, T> Clone for Iter<'a, T>
impl<'a, T> Clone for Iter<'a, T>
impl<'a, T, P> Clone for Split<'a, T, P> where P: Clone + FnMut(&T) -> bool
impl<'a, T> Clone for Windows<'a, T>
impl<'a, T> Clone for Chunks<'a, T>
impl Clone for SearchStep
impl<'a, C> Clone for CharEqSearcher<'a, C> where C: Clone + CharEq
impl<'a> Clone for CharSearcher<'a>
impl<'a, 'b> Clone for CharSliceSearcher<'a, 'b>
impl<'a, F> Clone for CharPredicateSearcher<'a, F> where F: Clone + FnMut(char) -> bool
impl<'a, 'b> Clone for StrSearcher<'a, 'b>
impl Clone for StrSearcherImpl
impl Clone for EmptyNeedle
impl Clone for TwoWaySearcher
impl Clone for ParseBoolError
impl Clone for Utf8Error
impl<'a> Clone for Chars<'a>
impl<'a> Clone for CharIndices<'a>
impl<'a> Clone for Bytes<'a>
impl<'a, P> Clone for SplitInternal<'a, P> where P: Pattern<'a>, P::Searcher: Clone
impl<'a, P> Clone for Split<'a, P> where P: Pattern<'a>, P::Searcher: Clone
impl<'a, P> Clone for RSplit<'a, P> where P: Pattern<'a>, P::Searcher: Clone
impl<'a, P> Clone for SplitTerminator<'a, P> where P: Pattern<'a>, P::Searcher: Clone
impl<'a, P> Clone for RSplitTerminator<'a, P> where P: Pattern<'a>, P::Searcher: Clone
impl<'a, P> Clone for SplitNInternal<'a, P> where P: Pattern<'a>, P::Searcher: Clone
impl<'a, P> Clone for SplitN<'a, P> where P: Pattern<'a>, P::Searcher: Clone
impl<'a, P> Clone for RSplitN<'a, P> where P: Pattern<'a>, P::Searcher: Clone
impl<'a, P> Clone for MatchIndicesInternal<'a, P> where P: Pattern<'a>, P::Searcher: Clone
impl<'a, P> Clone for MatchIndices<'a, P> where P: Pattern<'a>, P::Searcher: Clone
impl<'a, P> Clone for RMatchIndices<'a, P> where P: Pattern<'a>, P::Searcher: Clone
impl<'a, P> Clone for MatchesInternal<'a, P> where P: Pattern<'a>, P::Searcher: Clone
impl<'a, P> Clone for Matches<'a, P> where P: Pattern<'a>, P::Searcher: Clone
impl<'a, P> Clone for RMatches<'a, P> where P: Pattern<'a>, P::Searcher: Clone
impl<'a> Clone for Lines<'a>
impl<'a> Clone for LinesAny<'a>
impl Clone for LinesAnyMap
impl Clone for CharRange
impl Clone for SipHasher
impl<H> Clone for BuildHasherDefault<H>
impl Clone for Binary
impl Clone for Octal
impl Clone for Decimal
impl Clone for LowerHex
impl Clone for UpperHex
impl Clone for Radix
impl<T, R> Clone for RadixFmt<T, R> where T: Clone, R: Clone
impl Clone for Error
impl Clone for FlagV1
impl<'a> Clone for Arguments<'a>
impl<A> Clone for (A,) where A: Clone
impl<A, B> Clone for (A, B) where A: Clone, B: Clone
impl<A, B, C> Clone for (A, B, C) where A: Clone, C: Clone, B: Clone
impl<A, B, C, D> Clone for (A, B, C, D) where C: Clone, A: Clone, B: Clone, D: Clone
impl<A, B, C, D, E> Clone for (A, B, C, D, E) where A: Clone, B: Clone, D: Clone, C: Clone, E: Clone
impl<A, B, C, D, E, F> Clone for (A, B, C, D, E, F) where F: Clone, B: Clone, E: Clone, A: Clone, D: Clone, C: Clone
impl<A, B, C, D, E, F, G> Clone for (A, B, C, D, E, F, G) where E: Clone, A: Clone, G: Clone, F: Clone, B: Clone, D: Clone, C: Clone
impl<A, B, C, D, E, F, G, H> Clone for (A, B, C, D, E, F, G, H) where C: Clone, H: Clone, F: Clone, B: Clone, G: Clone, A: Clone, E: Clone, D: Clone
impl<A, B, C, D, E, F, G, H, I> Clone for (A, B, C, D, E, F, G, H, I) where F: Clone, A: Clone, C: Clone, D: Clone, G: Clone, H: Clone, E: Clone, I: Clone, B: Clone
impl<A, B, C, D, E, F, G, H, I, J> Clone for (A, B, C, D, E, F, G, H, I, J) where D: Clone, J: Clone, C: Clone, H: Clone, A: Clone, F: Clone, E: Clone, I: Clone, B: Clone, G: Clone
impl<A, B, C, D, E, F, G, H, I, J, K> Clone for (A, B, C, D, E, F, G, H, I, J, K) where D: Clone, A: Clone, E: Clone, G: Clone, K: Clone, J: Clone, B: Clone, F: Clone, I: Clone, H: Clone, C: Clone
impl<A, B, C, D, E, F, G, H, I, J, K, L> Clone for (A, B, C, D, E, F, G, H, I, J, K, L) where C: Clone, F: Clone, G: Clone, D: Clone, H: Clone, A: Clone, J: Clone, K: Clone, I: Clone, E: Clone, B: Clone, L: Clone
impl<T> Clone for BinaryHeap<T> where T: Clone
impl<'a, T> Clone for Iter<'a, T>
impl<'a, K, V, Type> Clone for NodeRef<Immut<'a>, K, V, Type> where K: 'a, V: 'a
impl<Node, Type> Clone for Handle<Node, Type> where Node: Copy
impl<K, V> Clone for BTreeMap<K, V> where V: Clone, K: Clone
impl<'a, K, V> Clone for Iter<'a, K, V>
impl<'a, K, V> Clone for Keys<'a, K, V>
impl<'a, K, V> Clone for Values<'a, K, V>
impl<'a, K, V> Clone for Range<'a, K, V>
impl<T> Clone for BTreeSet<T> where T: Clone
impl<'a, T> Clone for Iter<'a, T>
impl<'a, T> Clone for Range<'a, T>
impl<'a, T> Clone for Difference<'a, T>
impl<'a, T> Clone for SymmetricDifference<'a, T>
impl<'a, T> Clone for Intersection<'a, T>
impl<'a, T> Clone for Union<'a, T>
impl<'a, B> Clone for Cow<'a, B> where B: ToOwned + ?Sized
impl<E> Clone for EnumSet<E>
impl<E> Clone for Iter<E>
impl<'a, T> Clone for Iter<'a, T>
impl<T> Clone for IntoIter<T> where T: Clone
impl<T> Clone for Rawlink<T>
impl<A> Clone for LinkedList<A> where A: Clone
impl<'a> Clone for EncodeUtf16<'a>
impl Clone for String
impl Clone for ParseError
impl<T> Clone for Vec<T> where T: Clone
impl<T> Clone for IntoIter<T> where T: Clone
impl<T> Clone for VecDeque<T> where T: Clone
impl<'a, T> Clone for Iter<'a, T>
impl<T> Clone for IntoIter<T> where T: Clone
impl<T> Clone for Bound<T> where T: Clone
impl Clone for LocalKeyState
impl Clone for Thread
impl<K, V> Clone for RawBucket<K, V>
impl<K, V, M> Clone for Bucket<K, V, M> where M: Copy
impl Clone for SafeHash
impl<'a, K, V> Clone for RawBuckets<'a, K, V>
impl<'a, K, V> Clone for Iter<'a, K, V>
impl<K, V> Clone for RawTable<K, V> where K: Clone, V: Clone
impl Clone for DefaultResizePolicy
impl<K, V, S> Clone for HashMap<K, V, S> where K: Clone, S: Clone, V: Clone
impl<'a, K, V> Clone for Iter<'a, K, V>
impl<'a, K, V> Clone for Keys<'a, K, V>
impl<'a, K, V> Clone for Values<'a, K, V>
impl Clone for RandomState
impl<T, S> Clone for HashSet<T, S> where S: Clone, T: Clone
impl<'a, K> Clone for Iter<'a, K>
impl<'a, T, S> Clone for Intersection<'a, T, S>
impl<'a, T, S> Clone for Difference<'a, T, S>
impl<'a, T, S> Clone for SymmetricDifference<'a, T, S>
impl<'a, T, S> Clone for Union<'a, T, S>
impl<H> Clone for DefaultState<H>
impl Clone for VarError
impl Clone for CString
impl Clone for NulError
impl Clone for IntoStringError
impl Clone for OsString
impl Clone for Metadata
impl Clone for OpenOptions
impl Clone for Permissions
impl Clone for FileType
impl<T> Clone for Cursor<T> where T: Clone
impl Clone for ErrorKind
impl Clone for SeekFrom
impl Clone for IpAddr
impl Clone for Ipv6MulticastScope
impl Clone for Ipv4Addr
impl Clone for Ipv6Addr
impl Clone for SocketAddr
impl Clone for SocketAddrV4
impl Clone for SocketAddrV6
impl Clone for AddrParseError
impl Clone for Shutdown
impl Clone for stat
impl<'a> Clone for Prefix<'a>
impl Clone for State
impl<'a> Clone for PrefixComponent<'a>
impl<'a> Clone for Component<'a>
impl<'a> Clone for Components<'a>
impl<'a> Clone for Iter<'a>
impl Clone for PathBuf
impl Clone for StripPrefixError
impl Clone for Output
impl Clone for ExitStatus
impl Clone for SignalToken
impl<T> Clone for SendError<T> where T: Clone
impl Clone for RecvError
impl Clone for TryRecvError
impl<T> Clone for TrySendError<T> where T: Clone
impl<T> Clone for Sender<T>
impl<T> Clone for SyncSender<T>
impl Clone for WaitTimeoutResult
impl Clone for Duration
impl Clone for Instant
impl Clone for SystemTime
impl Clone for SystemTimeError
impl Clone for EHContext
impl Clone for _Unwind_Action
impl Clone for _Unwind_Reason_Code
impl Clone for CodePoint
impl Clone for Wtf8Buf
impl<'a> Clone for Wtf8CodePoints<'a>
impl<'a> Clone for EncodeWide<'a>
impl Clone for FileAttr
impl Clone for OpenOptions
impl Clone for FilePermissions
impl Clone for FileType
impl Clone for utimbuf
impl Clone for timeval
impl Clone for timespec
impl Clone for rlimit
impl Clone for rusage
impl Clone for in_addr
impl Clone for in6_addr
impl Clone for ip_mreq
impl Clone for ipv6_mreq
impl Clone for hostent
impl Clone for iovec
impl Clone for pollfd
impl Clone for sockaddr
impl Clone for sockaddr_in
impl Clone for sockaddr_in6
impl Clone for sockaddr_un
impl Clone for sockaddr_storage
impl Clone for addrinfo
impl Clone for sockaddr_ll
impl Clone for fd_set
impl Clone for tm
impl Clone for sched_param
impl Clone for Dl_info
impl Clone for epoll_event
impl Clone for utsname
impl Clone for dirent
impl Clone for dirent64
impl Clone for rlimit64
impl Clone for glob_t
impl Clone for ifaddrs
impl Clone for pthread_mutex_t
impl Clone for pthread_rwlock_t
impl Clone for pthread_mutexattr_t
impl Clone for pthread_cond_t
impl Clone for passwd
impl Clone for statvfs
impl Clone for sockaddr_nl
impl Clone for dqblk
impl Clone for signalfd_siginfo
impl Clone for fsid_t
impl Clone for mq_attr
impl Clone for cpu_set_t
impl Clone for sigaction
impl Clone for stack_t
impl Clone for siginfo_t
impl Clone for glob64_t
impl Clone for ucred
impl Clone for statfs
impl Clone for msghdr
impl Clone for termios
impl Clone for flock
impl Clone for sigset_t
impl Clone for stat
impl Clone for stat64
impl Clone for pthread_attr_t
impl Clone for ipc_perm
impl Clone for shmid_ds
impl Clone for Buf
impl Clone for ExitStatus
impl Clone for Timespec
impl Clone for Instant
impl Clone for SystemTime
impl Clone for Handler
impl Clone for StdRng
impl Clone for ThreadRng
impl<I> Clone for DecodeUtf16<I> where I: Clone + Iterator<Item=u16>
impl<I> Clone for Utf16Encoder<I> where I: Clone