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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.

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 an array holding more than 32 elements of a type that is Clone; the standard library only implements Clone up until arrays of size 32. In this case, the implementation of Clone cannot be derived, but can be implemented as:

#[derive(Copy)]
struct Stats {
   frequencies: [i32; 100],
}

impl Clone for Stats {
    fn clone(&self) -> Stats { *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

Returns a copy of the value.

Examples

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

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

Provided Methods

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.

Implementations on Foreign Types

impl Clone for TryFromSliceError [src]

Implementors

impl Clone for std::cmp::Ordering [src]

impl Clone for CollectionAllocErr [src]

impl Clone for VarError [src]

impl Clone for ErrorKind [src]

impl Clone for SeekFrom [src]

impl Clone for IpAddr [src]

impl Clone for Ipv6MulticastScope [src]

impl Clone for Shutdown [src]

impl Clone for std::net::SocketAddr [src]

impl Clone for FpCategory [src]

impl Clone for SearchStep [src]

impl Clone for ParseError [src]

impl Clone for std::sync::atomic::Ordering [src]

impl Clone for RecvTimeoutError [src]

impl Clone for TryRecvError [src]

impl Clone for bool [src]

impl Clone for char [src]

impl Clone for f32 [src]

impl Clone for f64 [src]

impl Clone for i128 [src]

impl Clone for i16 [src]

impl Clone for i32 [src]

impl Clone for i64 [src]

impl Clone for i8 [src]

impl Clone for isize [src]

impl Clone for ! [src]

impl Clone for u128 [src]

impl Clone for u16 [src]

impl Clone for u32 [src]

impl Clone for u64 [src]

impl Clone for u8 [src]

impl Clone for usize [src]

impl Clone for AllocErr [src]

impl Clone for CannotReallocInPlace [src]

impl Clone for Global [src]

impl Clone for Layout [src]

impl Clone for LayoutErr [src]

impl Clone for TypeId [src]

impl Clone for Box<str> [src]

ⓘImportant traits for Box<I>
impl<I> Iterator for Box<I> where
    I: Iterator + ?Sized, 
    type Item = <I as Iterator>::Item;
impl<R: Read + ?Sized> Read for Box<R>
impl<W: Write + ?Sized> Write for Box<W>

impl Clone for Box<CStr> [src]

impl Clone for Box<OsStr> [src]

impl Clone for Box<Path> [src]

impl Clone for CharTryFromError [src]

impl Clone for DecodeUtf16Error [src]

impl Clone for EscapeDebug [src]

ⓘImportant traits for EscapeDebug
impl Iterator for EscapeDebug
    type Item = char;

impl Clone for EscapeDefault [src]

ⓘImportant traits for EscapeDefault
impl Iterator for EscapeDefault
    type Item = char;

impl Clone for EscapeUnicode [src]

ⓘImportant traits for EscapeUnicode
impl Iterator for EscapeUnicode
    type Item = char;

impl Clone for ParseCharError [src]

impl Clone for ToLowercase [src]

ⓘImportant traits for ToLowercase
impl Iterator for ToLowercase
    type Item = char;

impl Clone for ToUppercase [src]

ⓘImportant traits for ToUppercase
impl Iterator for ToUppercase
    type Item = char;

impl Clone for UnicodeVersion [src]

impl Clone for DefaultHasher [src]

impl Clone for RandomState [src]

impl Clone for CString [src]

impl Clone for FromBytesWithNulError [src]

impl Clone for IntoStringError [src]

impl Clone for NulError [src]

impl Clone for OsString [src]

impl Clone for Error [src]

impl Clone for FileType [src]

impl Clone for Metadata [src]

impl Clone for OpenOptions [src]

impl Clone for Permissions [src]

impl Clone for SipHasher [src]

impl Clone for Pinned [src]

impl Clone for AddrParseError [src]

impl Clone for Ipv4Addr [src]

impl Clone for Ipv6Addr [src]

impl Clone for SocketAddrV4 [src]

impl Clone for SocketAddrV6 [src]

impl Clone for NonZeroU128 [src]

impl Clone for NonZeroU16 [src]

impl Clone for NonZeroU32 [src]

impl Clone for NonZeroU64 [src]

impl Clone for NonZeroU8 [src]

impl Clone for NonZeroUsize [src]

impl Clone for ParseFloatError [src]

impl Clone for ParseIntError [src]

impl Clone for TryFromIntError [src]

impl Clone for RangeFull [src]

impl Clone for NoneError [src]

impl Clone for stat [src]

impl Clone for std::os::unix::net::SocketAddr [src]

impl Clone for PathBuf [src]

impl Clone for StripPrefixError [src]

impl Clone for ExitCode [src]

impl Clone for ExitStatus [src]

impl Clone for Output [src]

impl Clone for TraitObject [src]

impl Clone for ParseBoolError [src]

impl Clone for Utf8Error [src]

impl Clone for String [src]

impl Clone for RecvError [src]

impl Clone for WaitTimeoutResult [src]

impl Clone for LocalWaker [src]

impl Clone for Waker [src]

impl Clone for Thread [src]

impl Clone for ThreadId [src]

impl Clone for Duration [src]

impl Clone for Instant [src]

impl Clone for SystemTime [src]

impl Clone for SystemTimeError [src]

impl<'a> Clone for Component<'a> [src]

impl<'a> Clone for Prefix<'a> [src]

impl<'a> Clone for Arguments<'a> [src]

impl<'a> Clone for EncodeWide<'a> [src]

ⓘImportant traits for EncodeWide<'a>
impl<'a> Iterator for EncodeWide<'a>
    type Item = u16;

impl<'a> Clone for Ancestors<'a> [src]

ⓘImportant traits for Ancestors<'a>
impl<'a> Iterator for Ancestors<'a>
    type Item = &'a Path;

impl<'a> Clone for Components<'a> [src]

ⓘImportant traits for Components<'a>
impl<'a> Iterator for Components<'a>
    type Item = Component<'a>;

impl<'a> Clone for std::path::Iter<'a> [src]

ⓘImportant traits for Iter<'a>
impl<'a> Iterator for Iter<'a>
    type Item = &'a OsStr;

impl<'a> Clone for PrefixComponent<'a> [src]

impl<'a> Clone for CharSearcher<'a> [src]

impl<'a> Clone for Bytes<'a> [src]

ⓘImportant traits for Bytes<'a>
impl<'a> Iterator for Bytes<'a>
    type Item = u8;

impl<'a> Clone for CharIndices<'a> [src]

ⓘImportant traits for CharIndices<'a>
impl<'a> Iterator for CharIndices<'a>
    type Item = (usize, char);

impl<'a> Clone for Chars<'a> [src]

ⓘImportant traits for Chars<'a>
impl<'a> Iterator for Chars<'a>
    type Item = char;

impl<'a> Clone for EncodeUtf16<'a> [src]

ⓘImportant traits for EncodeUtf16<'a>
impl<'a> Iterator for EncodeUtf16<'a>
    type Item = u16;

impl<'a> Clone for Lines<'a> [src]

ⓘImportant traits for Lines<'a>
impl<'a> Iterator for Lines<'a>
    type Item = &'a str;

impl<'a> Clone for LinesAny<'a> [src]

ⓘImportant traits for LinesAny<'a>
impl<'a> Iterator for LinesAny<'a>
    type Item = &'a str;

impl<'a> Clone for SplitAsciiWhitespace<'a> [src]

ⓘImportant traits for SplitAsciiWhitespace<'a>
impl<'a> Iterator for SplitAsciiWhitespace<'a>
    type Item = &'a str;

impl<'a> Clone for SplitWhitespace<'a> [src]

ⓘImportant traits for SplitWhitespace<'a>
impl<'a> Iterator for SplitWhitespace<'a>
    type Item = &'a str;

impl<'a, 'b> Clone for CharSliceSearcher<'a, 'b> [src]

impl<'a, 'b> Clone for StrSearcher<'a, 'b> [src]

impl<'a, A> Clone for std::option::Iter<'a, A> [src]

ⓘImportant traits for Iter<'a, A>
impl<'a, A> Iterator for Iter<'a, A>
    type Item = &'a A;

impl<'a, B> Clone for Cow<'a, B> where
    B: ToOwned + ?Sized
[src]

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

impl<'a, K> Clone for std::collections::hash_set::Iter<'a, K> [src]

ⓘImportant traits for Iter<'a, K>
impl<'a, K> Iterator for Iter<'a, K>
    type Item = &'a K;

impl<'a, K, V> Clone for std::collections::btree_map::Iter<'a, K, V> [src]

ⓘImportant traits for Iter<'a, K, V>
impl<'a, K, V> Iterator for Iter<'a, K, V> where
    K: 'a,
    V: 'a, 
    type Item = (&'a K, &'a V);

impl<'a, K, V> Clone for std::collections::btree_map::Keys<'a, K, V> [src]

ⓘImportant traits for Keys<'a, K, V>
impl<'a, K, V> Iterator for Keys<'a, K, V>
    type Item = &'a K;

impl<'a, K, V> Clone for std::collections::btree_map::Range<'a, K, V> [src]

ⓘImportant traits for Range<'a, K, V>
impl<'a, K, V> Iterator for Range<'a, K, V>
    type Item = (&'a K, &'a V);

impl<'a, K, V> Clone for std::collections::btree_map::Values<'a, K, V> [src]

ⓘImportant traits for Values<'a, K, V>
impl<'a, K, V> Iterator for Values<'a, K, V>
    type Item = &'a V;

impl<'a, K, V> Clone for std::collections::hash_map::Iter<'a, K, V> [src]

ⓘImportant traits for Iter<'a, K, V>
impl<'a, K, V> Iterator for Iter<'a, K, V>
    type Item = (&'a K, &'a V);

impl<'a, K, V> Clone for std::collections::hash_map::Keys<'a, K, V> [src]

ⓘImportant traits for Keys<'a, K, V>
impl<'a, K, V> Iterator for Keys<'a, K, V>
    type Item = &'a K;

impl<'a, K, V> Clone for std::collections::hash_map::Values<'a, K, V> [src]

ⓘImportant traits for Values<'a, K, V>
impl<'a, K, V> Iterator for Values<'a, K, V>
    type Item = &'a V;

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

ⓘImportant traits for MatchIndices<'a, P>
impl<'a, P> Iterator for MatchIndices<'a, P> where
    P: Pattern<'a>, 
    type Item = (usize, &'a str);

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

ⓘImportant traits for Matches<'a, P>
impl<'a, P> Iterator for Matches<'a, P> where
    P: Pattern<'a>, 
    type Item = &'a str;

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

ⓘImportant traits for RMatchIndices<'a, P>
impl<'a, P> Iterator for RMatchIndices<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: ReverseSearcher<'a>, 
    type Item = (usize, &'a str);

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

ⓘImportant traits for RMatches<'a, P>
impl<'a, P> Iterator for RMatches<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: ReverseSearcher<'a>, 
    type Item = &'a str;

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

ⓘImportant traits for RSplit<'a, P>
impl<'a, P> Iterator for RSplit<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: ReverseSearcher<'a>, 
    type Item = &'a str;

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

ⓘImportant traits for RSplitN<'a, P>
impl<'a, P> Iterator for RSplitN<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: ReverseSearcher<'a>, 
    type Item = &'a str;

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

ⓘImportant traits for RSplitTerminator<'a, P>
impl<'a, P> Iterator for RSplitTerminator<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: ReverseSearcher<'a>, 
    type Item = &'a str;

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

ⓘImportant traits for Split<'a, P>
impl<'a, P> Iterator for Split<'a, P> where
    P: Pattern<'a>, 
    type Item = &'a str;

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

ⓘImportant traits for SplitN<'a, P>
impl<'a, P> Iterator for SplitN<'a, P> where
    P: Pattern<'a>, 
    type Item = &'a str;

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

ⓘImportant traits for SplitTerminator<'a, P>
impl<'a, P> Iterator for SplitTerminator<'a, P> where
    P: Pattern<'a>, 
    type Item = &'a str;

impl<'a, T> Clone for &'a T where
    T: ?Sized
[src]

ⓘImportant traits for &'a mut I
impl<'a, I> Iterator for &'a mut I where
    I: Iterator + ?Sized, 
    type Item = <I as Iterator>::Item;
impl<'a, R: Read + ?Sized> Read for &'a mut R
impl<'a, W: Write + ?Sized> Write for &'a mut W

impl<'a, T> Clone for std::collections::binary_heap::Iter<'a, T> [src]

ⓘImportant traits for Iter<'a, T>
impl<'a, T> Iterator for Iter<'a, T>
    type Item = &'a T;

impl<'a, T> Clone for std::collections::btree_set::Difference<'a, T> [src]

ⓘImportant traits for Difference<'a, T>
impl<'a, T> Iterator for Difference<'a, T> where
    T: Ord, 
    type Item = &'a T;

impl<'a, T> Clone for std::collections::btree_set::Intersection<'a, T> [src]

ⓘImportant traits for Intersection<'a, T>
impl<'a, T> Iterator for Intersection<'a, T> where
    T: Ord, 
    type Item = &'a T;

impl<'a, T> Clone for std::collections::btree_set::Iter<'a, T> [src]

ⓘImportant traits for Iter<'a, T>
impl<'a, T> Iterator for Iter<'a, T>
    type Item = &'a T;

impl<'a, T> Clone for std::collections::btree_set::Range<'a, T> [src]

ⓘImportant traits for Range<'a, T>
impl<'a, T> Iterator for Range<'a, T>
    type Item = &'a T;

impl<'a, T> Clone for std::collections::btree_set::SymmetricDifference<'a, T> [src]

ⓘImportant traits for SymmetricDifference<'a, T>
impl<'a, T> Iterator for SymmetricDifference<'a, T> where
    T: Ord, 
    type Item = &'a T;

impl<'a, T> Clone for std::collections::btree_set::Union<'a, T> [src]

ⓘImportant traits for Union<'a, T>
impl<'a, T> Iterator for Union<'a, T> where
    T: Ord, 
    type Item = &'a T;

impl<'a, T> Clone for std::collections::linked_list::Iter<'a, T> [src]

ⓘImportant traits for Iter<'a, T>
impl<'a, T> Iterator for Iter<'a, T>
    type Item = &'a T;

impl<'a, T> Clone for std::collections::vec_deque::Iter<'a, T> [src]

ⓘImportant traits for Iter<'a, T>
impl<'a, T> Iterator for Iter<'a, T>
    type Item = &'a T;

impl<'a, T> Clone for std::result::Iter<'a, T> [src]

ⓘImportant traits for Iter<'a, T>
impl<'a, T> Iterator for Iter<'a, T>
    type Item = &'a T;

impl<'a, T> Clone for Chunks<'a, T> [src]

ⓘImportant traits for Chunks<'a, T>
impl<'a, T> Iterator for Chunks<'a, T>
    type Item = &'a [T];

impl<'a, T> Clone for ExactChunks<'a, T> [src]

ⓘImportant traits for ExactChunks<'a, T>
impl<'a, T> Iterator for ExactChunks<'a, T>
    type Item = &'a [T];

impl<'a, T> Clone for std::slice::Iter<'a, T> [src]

ⓘImportant traits for Iter<'a, T>
impl<'a, T> Iterator for Iter<'a, T>
    type Item = &'a T;

impl<'a, T> Clone for Windows<'a, T> [src]

ⓘImportant traits for Windows<'a, T>
impl<'a, T> Iterator for Windows<'a, T>
    type Item = &'a [T];

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

ⓘImportant traits for RSplit<'a, T, P>
impl<'a, T, P> Iterator for RSplit<'a, T, P> where
    P: FnMut(&T) -> bool, 
    type Item = &'a [T];

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

ⓘImportant traits for Split<'a, T, P>
impl<'a, T, P> Iterator for Split<'a, T, P> where
    P: FnMut(&T) -> bool, 
    type Item = &'a [T];

impl<'a, T, S> Clone for std::collections::hash_set::Difference<'a, T, S> [src]

ⓘImportant traits for Difference<'a, T, S>
impl<'a, T, S> Iterator for Difference<'a, T, S> where
    T: Eq + Hash,
    S: BuildHasher, 
    type Item = &'a T;

impl<'a, T, S> Clone for std::collections::hash_set::Intersection<'a, T, S> [src]

ⓘImportant traits for Intersection<'a, T, S>
impl<'a, T, S> Iterator for Intersection<'a, T, S> where
    T: Eq + Hash,
    S: BuildHasher, 
    type Item = &'a T;

impl<'a, T, S> Clone for std::collections::hash_set::SymmetricDifference<'a, T, S> [src]

ⓘImportant traits for SymmetricDifference<'a, T, S>
impl<'a, T, S> Iterator for SymmetricDifference<'a, T, S> where
    T: Eq + Hash,
    S: BuildHasher, 
    type Item = &'a T;

impl<'a, T, S> Clone for std::collections::hash_set::Union<'a, T, S> [src]

ⓘImportant traits for Union<'a, T, S>
impl<'a, T, S> Iterator for Union<'a, T, S> where
    T: Eq + Hash,
    S: BuildHasher, 
    type Item = &'a T;

impl<A> Clone for Repeat<A> where
    A: Clone
[src]

ⓘImportant traits for Repeat<A>
impl<A> Iterator for Repeat<A> where
    A: Clone, 
    type Item = A;

impl<A> Clone for std::option::IntoIter<A> where
    A: Clone
[src]

ⓘImportant traits for IntoIter<A>
impl<A> Iterator for IntoIter<A>
    type Item = A;

impl<A, B> Clone for Chain<A, B> where
    A: Clone,
    B: Clone
[src]

ⓘImportant traits for Chain<A, B>
impl<A, B> Iterator for Chain<A, B> where
    A: Iterator,
    B: Iterator<Item = <A as Iterator>::Item>, 
    type Item = <A as Iterator>::Item;

impl<A, B> Clone for Zip<A, B> where
    A: Clone,
    B: Clone
[src]

ⓘImportant traits for Zip<A, B>
impl<A, B> Iterator for Zip<A, B> where
    A: Iterator,
    B: Iterator, 
    type Item = (<A as Iterator>::Item, <B as Iterator>::Item);

impl<F> Clone for RepeatWith<F> where
    F: Clone
[src]

ⓘImportant traits for RepeatWith<F>
impl<A, F> Iterator for RepeatWith<F> where
    F: FnMut() -> A, 
    type Item = A;

impl<H> Clone for BuildHasherDefault<H> [src]

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

ⓘImportant traits for DecodeUtf16<I>
impl<I> Iterator for DecodeUtf16<I> where
    I: Iterator<Item = u16>, 
    type Item = Result<char, DecodeUtf16Error>;

impl<I> Clone for Cloned<I> where
    I: Clone
[src]

ⓘImportant traits for Cloned<I>
impl<'a, I, T> Iterator for Cloned<I> where
    I: Iterator<Item = &'a T>,
    T: 'a + Clone, 
    type Item = T;

impl<I> Clone for Cycle<I> where
    I: Clone
[src]

ⓘImportant traits for Cycle<I>
impl<I> Iterator for Cycle<I> where
    I: Clone + Iterator, 
    type Item = <I as Iterator>::Item;

impl<I> Clone for Enumerate<I> where
    I: Clone
[src]

ⓘImportant traits for Enumerate<I>
impl<I> Iterator for Enumerate<I> where
    I: Iterator, 
    type Item = (usize, <I as Iterator>::Item);

impl<I> Clone for Fuse<I> where
    I: Clone
[src]

ⓘImportant traits for Fuse<I>
impl<I> Iterator for Fuse<I> where
    I: Iterator, 
    type Item = <I as Iterator>::Item;
impl<I> Iterator for Fuse<I> where
    I: FusedIterator, 

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

ⓘImportant traits for Peekable<I>
impl<I> Iterator for Peekable<I> where
    I: Iterator, 
    type Item = <I as Iterator>::Item;

impl<I> Clone for Skip<I> where
    I: Clone
[src]

ⓘImportant traits for Skip<I>
impl<I> Iterator for Skip<I> where
    I: Iterator, 
    type Item = <I as Iterator>::Item;

impl<I> Clone for StepBy<I> where
    I: Clone
[src]

ⓘImportant traits for StepBy<I>
impl<I> Iterator for StepBy<I> where
    I: Iterator, 
    type Item = <I as Iterator>::Item;

impl<I> Clone for Take<I> where
    I: Clone
[src]

ⓘImportant traits for Take<I>
impl<I> Iterator for Take<I> where
    I: Iterator, 
    type Item = <I as Iterator>::Item;

impl<I, F> Clone for FilterMap<I, F> where
    F: Clone,
    I: Clone
[src]

ⓘImportant traits for FilterMap<I, F>
impl<B, I, F> Iterator for FilterMap<I, F> where
    F: FnMut(<I as Iterator>::Item) -> Option<B>,
    I: Iterator, 
    type Item = B;

impl<I, F> Clone for Inspect<I, F> where
    F: Clone,
    I: Clone
[src]

ⓘImportant traits for Inspect<I, F>
impl<I, F> Iterator for Inspect<I, F> where
    F: FnMut(&<I as Iterator>::Item),
    I: Iterator, 
    type Item = <I as Iterator>::Item;

impl<I, F> Clone for Map<I, F> where
    F: Clone,
    I: Clone
[src]

ⓘImportant traits for Map<I, F>
impl<B, I, F> Iterator for Map<I, F> where
    F: FnMut(<I as Iterator>::Item) -> B,
    I: Iterator, 
    type Item = B;

impl<I, P> Clone for Filter<I, P> where
    I: Clone,
    P: Clone
[src]

ⓘImportant traits for Filter<I, P>
impl<I, P> Iterator for Filter<I, P> where
    I: Iterator,
    P: FnMut(&<I as Iterator>::Item) -> bool, 
    type Item = <I as Iterator>::Item;

impl<I, P> Clone for SkipWhile<I, P> where
    I: Clone,
    P: Clone
[src]

ⓘImportant traits for SkipWhile<I, P>
impl<I, P> Iterator for SkipWhile<I, P> where
    I: Iterator,
    P: FnMut(&<I as Iterator>::Item) -> bool, 
    type Item = <I as Iterator>::Item;

impl<I, P> Clone for TakeWhile<I, P> where
    I: Clone,
    P: Clone
[src]

ⓘImportant traits for TakeWhile<I, P>
impl<I, P> Iterator for TakeWhile<I, P> where
    I: Iterator,
    P: FnMut(&<I as Iterator>::Item) -> bool, 
    type Item = <I as Iterator>::Item;

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

ⓘImportant traits for Scan<I, St, F>
impl<B, I, St, F> Iterator for Scan<I, St, F> where
    F: FnMut(&mut St, <I as Iterator>::Item) -> Option<B>,
    I: Iterator, 
    type Item = B;

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

ⓘImportant traits for Flatten<I>
impl<I, U> Iterator for Flatten<I> where
    I: Iterator,
    U: 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, 
    type Item = <U as Iterator>::Item;

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

ⓘImportant traits for FlatMap<I, U, F>
impl<I, U, F> Iterator for FlatMap<I, U, F> where
    F: FnMut(<I as Iterator>::Item) -> U,
    I: Iterator,
    U: IntoIterator, 
    type Item = <U as IntoIterator>::Item;

impl<Idx> Clone for std::ops::Range<Idx> where
    Idx: Clone
[src]

ⓘImportant traits for Range<A>
impl<A> Iterator for Range<A> where
    A: Step, 
    type Item = A;

impl<Idx> Clone for RangeFrom<Idx> where
    Idx: Clone
[src]

ⓘImportant traits for RangeFrom<A>
impl<A> Iterator for RangeFrom<A> where
    A: Step, 
    type Item = A;

impl<Idx> Clone for RangeInclusive<Idx> where
    Idx: Clone
[src]

ⓘImportant traits for RangeInclusive<A>
impl<A> Iterator for RangeInclusive<A> where
    A: Step, 
    type Item = A;

impl<Idx> Clone for RangeTo<Idx> where
    Idx: Clone
[src]

impl<Idx> Clone for RangeToInclusive<Idx> where
    Idx: Clone
[src]

impl<K, V> Clone for BTreeMap<K, V> where
    K: Clone,
    V: Clone
[src]

impl<K: Clone, V: Clone, S: Clone> Clone for HashMap<K, V, S> [src]

impl<T> Clone for Bound<T> where
    T: Clone
[src]

impl<T> Clone for Option<T> where
    T: Clone
[src]

impl<T> Clone for Poll<T> where
    T: Clone
[src]

impl<T> Clone for *const T where
    T: ?Sized
[src]

impl<T> Clone for *mut T where
    T: ?Sized
[src]

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

ⓘImportant traits for Box<I>
impl<I> Iterator for Box<I> where
    I: Iterator + ?Sized, 
    type Item = <I as Iterator>::Item;
impl<R: Read + ?Sized> Read for Box<R>
impl<W: Write + ?Sized> Write for Box<W>

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

ⓘImportant traits for Box<I>
impl<I> Iterator for Box<I> where
    I: Iterator + ?Sized, 
    type Item = <I as Iterator>::Item;
impl<R: Read + ?Sized> Read for Box<R>
impl<W: Write + ?Sized> Write for Box<W>

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

Examples

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

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

Examples

let x = Box::new(5);
let mut y = Box::new(10);

y.clone_from(&x);

assert_eq!(*y, 5);

impl<T> Clone for Cell<T> where
    T: Copy
[src]

impl<T> Clone for RefCell<T> where
    T: Clone
[src]

Panics

Panics if the value is currently mutably borrowed.

impl<T> Clone for Reverse<T> where
    T: Clone
[src]

impl<T> Clone for BinaryHeap<T> where
    T: Clone
[src]

impl<T> Clone for std::collections::binary_heap::IntoIter<T> where
    T: Clone
[src]

ⓘImportant traits for IntoIter<T>
impl<T> Iterator for IntoIter<T>
    type Item = T;

impl<T> Clone for BTreeSet<T> where
    T: Clone
[src]

impl<T> Clone for std::collections::linked_list::IntoIter<T> where
    T: Clone
[src]

ⓘImportant traits for IntoIter<T>
impl<T> Iterator for IntoIter<T>
    type Item = T;

impl<T> Clone for LinkedList<T> where
    T: Clone
[src]

impl<T> Clone for std::collections::vec_deque::IntoIter<T> where
    T: Clone
[src]

ⓘImportant traits for IntoIter<T>
impl<T> Iterator for IntoIter<T>
    type Item = T;

impl<T> Clone for VecDeque<T> where
    T: Clone
[src]

impl<T> Clone for Empty<T> [src]

ⓘImportant traits for Empty<T>
impl<T> Iterator for Empty<T>
    type Item = T;

impl<T> Clone for Once<T> where
    T: Clone
[src]

ⓘImportant traits for Once<T>
impl<T> Iterator for Once<T>
    type Item = T;

impl<T> Clone for Rev<T> where
    T: Clone
[src]

ⓘImportant traits for Rev<I>
impl<I> Iterator for Rev<I> where
    I: DoubleEndedIterator, 
    type Item = <I as Iterator>::Item;

impl<T> Clone for PhantomData<T> where
    T: ?Sized
[src]

impl<T> Clone for Discriminant<T> [src]

impl<T> Clone for ManuallyDrop<T> where
    T: Clone + ?Sized
[src]

impl<T> Clone for Wrapping<T> where
    T: Clone
[src]

impl<T> Clone for NonNull<T> where
    T: ?Sized
[src]

impl<T> Clone for Rc<T> where
    T: ?Sized
[src]

Makes a clone of the Rc pointer.

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

Examples

use std::rc::Rc;

let five = Rc::new(5);

Rc::clone(&five);

impl<T> Clone for std::rc::Weak<T> where
    T: ?Sized
[src]

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

Examples

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

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

Weak::clone(&weak_five);

impl<T> Clone for std::result::IntoIter<T> where
    T: Clone
[src]

ⓘImportant traits for IntoIter<T>
impl<T> Iterator for IntoIter<T>
    type Item = T;

impl<T> Clone for Sender<T> [src]

impl<T> Clone for SyncSender<T> [src]

impl<T> Clone for Arc<T> where
    T: ?Sized
[src]

Makes a clone of the Arc pointer.

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

Examples

use std::sync::Arc;

let five = Arc::new(5);

Arc::clone(&five);

impl<T> Clone for std::sync::Weak<T> where
    T: ?Sized
[src]

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

Examples

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

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

Weak::clone(&weak_five);

impl<T> Clone for std::vec::IntoIter<T> where
    T: Clone
[src]

ⓘImportant traits for IntoIter<T>
impl<T> Iterator for IntoIter<T>
    type Item = T;

impl<T> Clone for Vec<T> where
    T: Clone
[src]

ⓘImportant traits for Vec<u8>
impl Write for Vec<u8>

impl<T, E> Clone for Result<T, E> where
    E: Clone,
    T: Clone
[src]

impl<T: Clone> Clone for TrySendError<T> [src]

impl<T: Clone> Clone for Cursor<T> [src]

ⓘImportant traits for Cursor<T>
impl<T> Read for Cursor<T> where
    T: AsRef<[u8]>, 
impl<'a> Write for Cursor<&'a mut [u8]>
impl<'a> Write for Cursor<&'a mut Vec<u8>>
impl Write for Cursor<Vec<u8>>
impl Write for Cursor<Box<[u8]>>

impl<T: Clone> Clone for SendError<T> [src]

impl<T: Clone, S: Clone> Clone for HashSet<T, S> [src]

impl<Y, R> Clone for GeneratorState<Y, R> where
    R: Clone,
    Y: Clone
[src]

© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/clone/trait.Clone.html