Trait sp_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 FileType

fn clone(&self) -> FileType

impl Clone for ErrorKind

fn clone(&self) -> ErrorKind

impl Clone for Thread

fn clone(&self) -> Thread

impl Clone for ExitCode

fn clone(&self) -> ExitCode

impl Clone for Ipv6MulticastScope

fn clone(&self) -> Ipv6MulticastScope

impl Clone for Instant

fn clone(&self) -> Instant

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

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

impl Clone for Ipv6Addr

fn clone(&self) -> Ipv6Addr

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

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

impl Clone for AccessError

fn clone(&self) -> AccessError

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

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

impl Clone for OsString

fn clone(&self) -> OsString

impl Clone for SocketAddr

fn clone(&self) -> SocketAddr

impl<'a> Clone for IoSlice<'a>

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

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

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

impl Clone for OpenOptions

fn clone(&self) -> OpenOptions

impl Clone for SocketAddr

fn clone(&self) -> SocketAddr

impl Clone for CString

fn clone(&self) -> CString

impl Clone for Shutdown

fn clone(&self) -> Shutdown

impl Clone for RandomState

fn clone(&self) -> RandomState

impl<'a> Clone for Iter<'a>

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

impl Clone for Permissions

fn clone(&self) -> Permissions

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

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

impl<'a> Clone for Chain<'a>

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

impl Clone for NulError

fn clone(&self) -> NulError

impl Clone for Metadata

fn clone(&self) -> Metadata

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

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

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

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

impl Clone for stat

fn clone(&self) -> stat

impl Clone for AddrParseError

fn clone(&self) -> AddrParseError

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

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

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

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

impl Clone for PathBuf

fn clone(&self) -> PathBuf

impl Clone for IntoStringError

fn clone(&self) -> IntoStringError

impl Clone for StripPrefixError

fn clone(&self) -> StripPrefixError

impl Clone for SocketAddrV6

fn clone(&self) -> SocketAddrV6

impl Clone for SystemTime

fn clone(&self) -> SystemTime

impl Clone for SeekFrom

fn clone(&self) -> SeekFrom

impl Clone for FromBytesWithNulError

fn clone(&self) -> FromBytesWithNulError

impl Clone for SystemTimeError

fn clone(&self) -> SystemTimeError

impl Clone for IpAddr

fn clone(&self) -> IpAddr

impl Clone for Output

fn clone(&self) -> Output

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

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

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

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

impl Clone for VarError

fn clone(&self) -> VarError

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

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

impl Clone for ThreadId

fn clone(&self) -> ThreadId

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

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

impl Clone for DefaultHasher

fn clone(&self) -> DefaultHasher

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

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

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 Clone for SocketAddrV4

fn clone(&self) -> SocketAddrV4

impl Clone for ExitStatus

fn clone(&self) -> ExitStatus

impl Clone for Ipv4Addr

fn clone(&self) -> Ipv4Addr

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

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

impl Clone for i64

fn clone(&self) -> i64

impl<T> Clone for Pending<T>

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

impl Clone for DecodeUtf16Error

fn clone(&self) -> DecodeUtf16Error

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

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

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

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

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

impl Clone for i16

fn clone(&self) -> i16

impl Clone for f32

fn clone(&self) -> f32

impl Clone for __m128

fn clone(&self) -> __m128

impl Clone for ToUppercase

fn clone(&self) -> ToUppercase

impl Clone for ToLowercase

fn clone(&self) -> ToLowercase

impl Clone for char

fn clone(&self) -> char

impl Clone for u64

fn clone(&self) -> u64

impl Clone for ParseCharError

fn clone(&self) -> ParseCharError

impl Clone for usize

fn clone(&self) -> usize

impl Clone for u8

fn clone(&self) -> u8

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 __m128i

fn clone(&self) -> __m128i

impl Clone for __m64

fn clone(&self) -> __m64

impl Clone for CharTryFromError

fn clone(&self) -> CharTryFromError

impl Clone for Waker

fn clone(&self) -> Waker

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

fn clone(&self) -> *mut T

impl Clone for i32

fn clone(&self) -> i32

impl Clone for __m512i

fn clone(&self) -> __m512i

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

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

impl Clone for EscapeDefault

fn clone(&self) -> EscapeDefault

impl Clone for NoneError

fn clone(&self) -> NoneError

impl Clone for EscapeDefault

fn clone(&self) -> EscapeDefault

impl Clone for __m512

fn clone(&self) -> __m512

impl Clone for bool

fn clone(&self) -> bool

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

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

impl Clone for f64

fn clone(&self) -> f64

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

Shared references can be cloned, but mutable references cannot!

impl Clone for RawWakerVTable

fn clone(&self) -> RawWakerVTable

impl Clone for u16

fn clone(&self) -> u16

impl Clone for !

fn clone(&self) -> !

impl Clone for __m256

fn clone(&self) -> __m256

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

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

impl Clone for __m256i

fn clone(&self) -> __m256i

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

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

impl Clone for u32

fn clone(&self) -> u32

impl Clone for __m256d

fn clone(&self) -> __m256d

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

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

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

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

impl Clone for EscapeDebug

fn clone(&self) -> EscapeDebug

impl Clone for __m512d

fn clone(&self) -> __m512d

impl Clone for __m128d

fn clone(&self) -> __m128d

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

Shared references can be cloned, but mutable references cannot!

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

impl Clone for i128

fn clone(&self) -> i128

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

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

impl Clone for CpuidResult

fn clone(&self) -> CpuidResult

impl Clone for Duration

fn clone(&self) -> Duration

impl Clone for TraitObject

fn clone(&self) -> TraitObject

impl Clone for i8

fn clone(&self) -> i8

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

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

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

fn clone(&self) -> *const T

impl Clone for isize

fn clone(&self) -> isize

impl Clone for u128

fn clone(&self) -> u128

impl Clone for TryFromSliceError

fn clone(&self) -> TryFromSliceError

impl Clone for EscapeUnicode

fn clone(&self) -> EscapeUnicode

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

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

impl Clone for String

fn clone(&self) -> String

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

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

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

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

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

impl Clone for TryReserveError

fn clone(&self) -> TryReserveError

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

fn clone(&self) -> Iter<'_, 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 Clone for FromUtf8Error

fn clone(&self) -> FromUtf8Error

impl Clone for pthread_rwlockattr_t

fn clone(&self) -> pthread_rwlockattr_t

impl Clone for pthread_mutexattr_t

fn clone(&self) -> pthread_mutexattr_t

impl Clone for tms

fn clone(&self) -> tms

impl Clone for af_alg_iv

fn clone(&self) -> af_alg_iv

impl Clone for ff_ramp_effect

fn clone(&self) -> ff_ramp_effect

impl Clone for __timeval

fn clone(&self) -> __timeval

impl Clone for sockaddr_in

fn clone(&self) -> sockaddr_in

impl Clone for hostent

fn clone(&self) -> hostent

impl Clone for max_align_t

fn clone(&self) -> max_align_t

impl Clone for fpos64_t

fn clone(&self) -> fpos64_t

impl Clone for utimbuf

fn clone(&self) -> utimbuf

impl Clone for sem_t

fn clone(&self) -> sem_t

impl Clone for __exit_status

fn clone(&self) -> __exit_status

impl Clone for pthread_condattr_t

fn clone(&self) -> pthread_condattr_t

impl Clone for dirent64

fn clone(&self) -> dirent64

impl Clone for in6_pktinfo

fn clone(&self) -> in6_pktinfo

impl Clone for _libc_xmmreg

fn clone(&self) -> _libc_xmmreg

impl Clone for stat

fn clone(&self) -> stat

impl Clone for statvfs

fn clone(&self) -> statvfs

impl Clone for group

fn clone(&self) -> group

impl Clone for ipv6_mreq

fn clone(&self) -> ipv6_mreq

impl Clone for sockaddr_nl

fn clone(&self) -> sockaddr_nl

impl Clone for iovec

fn clone(&self) -> iovec

impl Clone for statfs64

fn clone(&self) -> statfs64

impl Clone for input_keymap_entry

fn clone(&self) -> input_keymap_entry

impl Clone for _libc_fpxreg

fn clone(&self) -> _libc_fpxreg

impl Clone for user_fpregs_struct

fn clone(&self) -> user_fpregs_struct

impl Clone for servent

fn clone(&self) -> servent

impl Clone for tm

fn clone(&self) -> tm

impl Clone for ip_mreqn

fn clone(&self) -> ip_mreqn

impl Clone for ff_condition_effect

fn clone(&self) -> ff_condition_effect

impl Clone for sockaddr_ll

fn clone(&self) -> sockaddr_ll

impl Clone for signalfd_siginfo

fn clone(&self) -> signalfd_siginfo

impl Clone for input_id

fn clone(&self) -> input_id

impl Clone for inotify_event

fn clone(&self) -> inotify_event

impl Clone for mq_attr

fn clone(&self) -> mq_attr

impl Clone for msghdr

fn clone(&self) -> msghdr

impl Clone for ucred

fn clone(&self) -> ucred

impl Clone for lconv

fn clone(&self) -> lconv

impl Clone for sockaddr_alg

fn clone(&self) -> sockaddr_alg

impl Clone for input_mask

fn clone(&self) -> input_mask

impl Clone for sigevent

fn clone(&self) -> sigevent

impl Clone for timespec

fn clone(&self) -> timespec

impl Clone for ff_trigger

fn clone(&self) -> ff_trigger

impl Clone for flock64

fn clone(&self) -> flock64

impl Clone for in_addr

fn clone(&self) -> in_addr

impl Clone for statx

fn clone(&self) -> statx

impl Clone for utmpx

fn clone(&self) -> utmpx

impl Clone for ntptimeval

fn clone(&self) -> ntptimeval

impl Clone for Elf32_Sym

fn clone(&self) -> Elf32_Sym

impl Clone for arpd_request

fn clone(&self) -> arpd_request

impl Clone for mmsghdr

fn clone(&self) -> mmsghdr

impl Clone for winsize

fn clone(&self) -> winsize

impl Clone for itimerspec

fn clone(&self) -> itimerspec

impl Clone for termios2

fn clone(&self) -> termios2

impl Clone for ipc_perm

fn clone(&self) -> ipc_perm

impl Clone for sockaddr_in6

fn clone(&self) -> sockaddr_in6

impl Clone for timeval

fn clone(&self) -> timeval

impl Clone for fpos_t

fn clone(&self) -> fpos_t

impl Clone for sigset_t

fn clone(&self) -> sigset_t

impl Clone for dqblk

fn clone(&self) -> dqblk

impl Clone for sockaddr_vm

fn clone(&self) -> sockaddr_vm

impl Clone for user

fn clone(&self) -> user

impl Clone for linger

fn clone(&self) -> linger

impl Clone for timezone

fn clone(&self) -> timezone

impl Clone for protoent

fn clone(&self) -> protoent

impl Clone for Elf32_Ehdr

fn clone(&self) -> Elf32_Ehdr

impl Clone for utsname

fn clone(&self) -> utsname

impl Clone for regmatch_t

fn clone(&self) -> regmatch_t

impl Clone for nlmsgerr

fn clone(&self) -> nlmsgerr

impl Clone for statfs

fn clone(&self) -> statfs

impl Clone for ff_rumble_effect

fn clone(&self) -> ff_rumble_effect

impl Clone for nl_pktinfo

fn clone(&self) -> nl_pktinfo

impl Clone for ff_envelope

fn clone(&self) -> ff_envelope

impl Clone for rlimit64

fn clone(&self) -> rlimit64

impl Clone for ff_effect

fn clone(&self) -> ff_effect

impl Clone for siginfo_t

fn clone(&self) -> siginfo_t

impl Clone for Elf64_Shdr

fn clone(&self) -> Elf64_Shdr

impl Clone for ff_constant_effect

fn clone(&self) -> ff_constant_effect

impl Clone for Elf64_Phdr

fn clone(&self) -> Elf64_Phdr

impl Clone for ip_mreq

fn clone(&self) -> ip_mreq

impl Clone for sigval

fn clone(&self) -> sigval

impl Clone for pthread_cond_t

fn clone(&self) -> pthread_cond_t

impl Clone for ifaddrs

fn clone(&self) -> ifaddrs

impl Clone for pthread_mutex_t

fn clone(&self) -> pthread_mutex_t

impl Clone for Elf64_Chdr

fn clone(&self) -> Elf64_Chdr

impl Clone for timex

fn clone(&self) -> timex

impl Clone for Elf32_Chdr

fn clone(&self) -> Elf32_Chdr

impl Clone for sockaddr_un

fn clone(&self) -> sockaddr_un

impl Clone for sockaddr

fn clone(&self) -> sockaddr

impl Clone for fsid_t

fn clone(&self) -> fsid_t

impl Clone for passwd

fn clone(&self) -> passwd

impl Clone for epoll_event

fn clone(&self) -> epoll_event

impl Clone for rtentry

fn clone(&self) -> rtentry

impl Clone for in_pktinfo

fn clone(&self) -> in_pktinfo

impl Clone for shmid_ds

fn clone(&self) -> shmid_ds

impl Clone for stat64

fn clone(&self) -> stat64

impl Clone for arphdr

fn clone(&self) -> arphdr

impl Clone for arpreq_old

fn clone(&self) -> arpreq_old

impl Clone for ip_mreq_source

fn clone(&self) -> ip_mreq_source

impl Clone for nl_mmap_hdr

fn clone(&self) -> nl_mmap_hdr

impl Clone for sockaddr_storage

fn clone(&self) -> sockaddr_storage

impl Clone for pollfd

fn clone(&self) -> pollfd

impl Clone for mcontext_t

fn clone(&self) -> mcontext_t

impl Clone for dirent

fn clone(&self) -> dirent

impl Clone for dl_phdr_info

fn clone(&self) -> dl_phdr_info

impl Clone for nl_mmap_req

fn clone(&self) -> nl_mmap_req

impl Clone for fanotify_response

fn clone(&self) -> fanotify_response

impl Clone for Elf64_Sym

fn clone(&self) -> Elf64_Sym

impl Clone for ff_periodic_effect

fn clone(&self) -> ff_periodic_effect

impl Clone for sysinfo

fn clone(&self) -> sysinfo

impl Clone for input_absinfo

fn clone(&self) -> input_absinfo

impl Clone for sock_extended_err

fn clone(&self) -> sock_extended_err

impl Clone for stack_t

fn clone(&self) -> stack_t

impl Clone for in6_addr

fn clone(&self) -> in6_addr

impl Clone for msginfo

fn clone(&self) -> msginfo

impl Clone for cmsghdr

fn clone(&self) -> cmsghdr

impl Clone for Elf32_Phdr

fn clone(&self) -> Elf32_Phdr

impl Clone for FILE

fn clone(&self) -> FILE

impl Clone for cpu_set_t

fn clone(&self) -> cpu_set_t

impl Clone for itimerval

fn clone(&self) -> itimerval

impl Clone for arpreq

fn clone(&self) -> arpreq

impl Clone for termios

fn clone(&self) -> termios

impl Clone for input_event

fn clone(&self) -> input_event

impl Clone for flock

fn clone(&self) -> flock

impl Clone for Dl_info

fn clone(&self) -> Dl_info

impl Clone for rlimit

fn clone(&self) -> rlimit

impl Clone for glob64_t

fn clone(&self) -> glob64_t

impl Clone for mntent

fn clone(&self) -> mntent

impl Clone for fd_set

fn clone(&self) -> fd_set

impl Clone for user_regs_struct

fn clone(&self) -> user_regs_struct

impl Clone for DIR

fn clone(&self) -> DIR

impl Clone for packet_mreq

fn clone(&self) -> packet_mreq

impl Clone for if_nameindex

fn clone(&self) -> if_nameindex

impl Clone for ucontext_t

fn clone(&self) -> ucontext_t

impl Clone for rusage

fn clone(&self) -> rusage

impl Clone for sembuf

fn clone(&self) -> sembuf

impl Clone for Elf32_Shdr

fn clone(&self) -> Elf32_Shdr

impl Clone for nlmsghdr

fn clone(&self) -> nlmsghdr

impl Clone for fanotify_event_metadata

fn clone(&self) -> fanotify_event_metadata

impl Clone for genlmsghdr

fn clone(&self) -> genlmsghdr

impl Clone for pthread_rwlock_t

fn clone(&self) -> pthread_rwlock_t

impl Clone for addrinfo

fn clone(&self) -> addrinfo

impl Clone for sched_param

fn clone(&self) -> sched_param

impl Clone for _libc_fpstate

fn clone(&self) -> _libc_fpstate

impl Clone for sigaction

fn clone(&self) -> sigaction

impl Clone for aiocb

fn clone(&self) -> aiocb

impl Clone for statx_timestamp

fn clone(&self) -> statx_timestamp

impl Clone for ff_replay

fn clone(&self) -> ff_replay

impl Clone for regex_t

fn clone(&self) -> regex_t

impl Clone for glob_t

fn clone(&self) -> glob_t

impl Clone for posix_spawnattr_t

fn clone(&self) -> posix_spawnattr_t

impl Clone for statvfs64

fn clone(&self) -> statvfs64

impl Clone for posix_spawn_file_actions_t

fn clone(&self) -> posix_spawn_file_actions_t

impl Clone for pthread_attr_t

fn clone(&self) -> pthread_attr_t

impl Clone for msqid_ds

fn clone(&self) -> msqid_ds

impl Clone for Elf64_Ehdr

fn clone(&self) -> Elf64_Ehdr

impl Clone for mallinfo

fn clone(&self) -> mallinfo

impl Clone for spwd

fn clone(&self) -> spwd

impl Clone for nlattr

fn clone(&self) -> nlattr

impl Clone for in6_rtmsg

fn clone(&self) -> in6_rtmsg

impl Clone for _Unwind_Action

fn clone(&self) -> _Unwind_Action

impl Clone for _Unwind_Reason_Code

fn clone(&self) -> _Unwind_Reason_Code

impl Clone for Frame

fn clone(&self) -> Frame

impl Clone for PrintFmt

fn clone(&self) -> PrintFmt

impl Clone for TryDemangleError

fn clone(&self) -> TryDemangleError

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

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

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

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

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

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

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

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

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

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

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

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

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

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

impl Clone for CollectionAllocErr

fn clone(&self) -> CollectionAllocErr

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

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

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Implementors

impl Clone for AllocInit

fn clone(&self) -> AllocInit

impl Clone for ReallocPlacement

fn clone(&self) -> ReallocPlacement

impl Clone for sp_std::cmp::Ordering

fn clone(&self) -> Ordering

impl Clone for Infallible

fn clone(&self) -> Infallible

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 sp_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 AllocErr

fn clone(&self) -> AllocErr

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 MemoryBlock

fn clone(&self) -> MemoryBlock

impl Clone for System

fn clone(&self) -> System

impl Clone for TypeId

fn clone(&self) -> TypeId

impl Clone for Error

fn clone(&self) -> Error

impl Clone for SipHasher

fn clone(&self) -> SipHasher

impl Clone for PhantomPinned

fn clone(&self) -> PhantomPinned

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 Box<str>

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

impl Clone for Box<CStr>

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

impl Clone for Box<OsStr>

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

impl Clone for Box<Path>

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

impl Clone for ParseBoolError

fn clone(&self) -> ParseBoolError

impl Clone for Utf8Error

fn clone(&self) -> Utf8Error

impl Clone for RecvError

fn clone(&self) -> RecvError

impl Clone for WaitTimeoutResult

fn clone(&self) -> WaitTimeoutResult

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

fn clone(&self) -> Arguments<'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 sp_std::str::EscapeDebug<'a>

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

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

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

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

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

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

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

impl<A, B> Clone for sp_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 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 sp_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>

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

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

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

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

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 BTreeSet<T> where
    T: Clone, 

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

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

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

fn clone(&self) -> IntoIter<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 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 Box<[T]> where
    T: Clone, 

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

fn clone_from(&mut self, other: &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 Reverse<T> where
    T: Clone, 

fn clone(&self) -> Reverse<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 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 sp_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 sp_std::result::IntoIter<T> where
    T: Clone, 

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

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

fn clone(&self) -> SendError<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 sp_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 sp_std::vec::IntoIter<T> where
    T: Clone, 

fn clone(&self) -> IntoIter<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<Y, R> Clone for GeneratorState<Y, R> where
    R: Clone,
    Y: Clone, 

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

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