Trait nom::lib::std::prelude::v1::rust_2021::PartialEq1.0.0[][src]

#[lang = "eq"]pub trait PartialEq<Rhs = Self> where
    Rhs: ?Sized
{ #[must_use] pub fn eq(&self, other: &Rhs) -> bool; #[must_use] pub fn ne(&self, other: &Rhs) -> bool { ... } }

Trait for equality comparisons which are partial equivalence relations.

This trait allows for partial equality, for types that do not have a full equivalence relation. For example, in floating point numbers NaN != NaN, so floating point types implement PartialEq but not Eq.

Formally, the equality must be (for all a, b, c of type A, B, C):

Note that the B: PartialEq<A> (symmetric) and A: PartialEq<C> (transitive) impls are not forced to exist, but these requirements apply whenever they do exist.

Derivable

This trait can be used with #[derive]. When derived on structs, two instances are equal if all fields are equal, and not equal if any fields are not equal. When derived on enums, each variant is equal to itself and not equal to the other variants.

How can I implement PartialEq?

PartialEq only requires the eq method to be implemented; ne is defined in terms of it by default. Any manual implementation of ne must respect the rule that eq is a strict inverse of ne; that is, !(a == b) if and only if a != b.

Implementations of PartialEq, PartialOrd, and Ord must agree with each other. It’s easy to accidentally make them disagree by deriving some of the traits and manually implementing others.

An example implementation for a domain in which two books are considered the same book if their ISBN matches, even if the formats differ:

enum BookFormat {
    Paperback,
    Hardback,
    Ebook,
}

struct Book {
    isbn: i32,
    format: BookFormat,
}

impl PartialEq for Book {
    fn eq(&self, other: &Self) -> bool {
        self.isbn == other.isbn
    }
}

let b1 = Book { isbn: 3, format: BookFormat::Paperback };
let b2 = Book { isbn: 3, format: BookFormat::Ebook };
let b3 = Book { isbn: 10, format: BookFormat::Paperback };

assert!(b1 == b2);
assert!(b1 != b3);

How can I compare two different types?

The type you can compare with is controlled by PartialEq’s type parameter. For example, let’s tweak our previous code a bit:

// The derive implements <BookFormat> == <BookFormat> comparisons
#[derive(PartialEq)]
enum BookFormat {
    Paperback,
    Hardback,
    Ebook,
}

struct Book {
    isbn: i32,
    format: BookFormat,
}

// Implement <Book> == <BookFormat> comparisons
impl PartialEq<BookFormat> for Book {
    fn eq(&self, other: &BookFormat) -> bool {
        self.format == *other
    }
}

// Implement <BookFormat> == <Book> comparisons
impl PartialEq<Book> for BookFormat {
    fn eq(&self, other: &Book) -> bool {
        *self == other.format
    }
}

let b1 = Book { isbn: 3, format: BookFormat::Paperback };

assert!(b1 == BookFormat::Paperback);
assert!(BookFormat::Ebook != b1);

By changing impl PartialEq for Book to impl PartialEq<BookFormat> for Book, we allow BookFormats to be compared with Books.

A comparison like the one above, which ignores some fields of the struct, can be dangerous. It can easily lead to an unintended violation of the requirements for a partial equivalence relation. For example, if we kept the above implementation of PartialEq<Book> for BookFormat and added an implementation of PartialEq<Book> for Book (either via a #[derive] or via the manual implementation from the first example) then the result would violate transitivity:

#[derive(PartialEq)]
enum BookFormat {
    Paperback,
    Hardback,
    Ebook,
}

#[derive(PartialEq)]
struct Book {
    isbn: i32,
    format: BookFormat,
}

impl PartialEq<BookFormat> for Book {
    fn eq(&self, other: &BookFormat) -> bool {
        self.format == *other
    }
}

impl PartialEq<Book> for BookFormat {
    fn eq(&self, other: &Book) -> bool {
        *self == other.format
    }
}

fn main() {
    let b1 = Book { isbn: 1, format: BookFormat::Paperback };
    let b2 = Book { isbn: 2, format: BookFormat::Paperback };

    assert!(b1 == BookFormat::Paperback);
    assert!(BookFormat::Paperback == b2);

    // The following should hold by transitivity but doesn't.
    assert!(b1 == b2); // <-- PANICS
}

Examples

let x: u32 = 0;
let y: u32 = 1;

assert_eq!(x == y, false);
assert_eq!(x.eq(&y), false);

Required methods

#[must_use]pub fn eq(&self, other: &Rhs) -> bool[src]

This method tests for self and other values to be equal, and is used by ==.

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Provided methods

#[must_use]pub fn ne(&self, other: &Rhs) -> bool[src]

This method tests for !=.

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Implementations on Foreign Types

impl PartialEq<Ipv6Addr> for Ipv6Addr[src]

impl PartialEq<UCred> for UCred[src]

impl<'a, 'b> PartialEq<&'a Path> for PathBuf[src]

impl PartialEq<Instant> for Instant[src]

impl PartialEq<OsStr> for str[src]

impl PartialEq<CStr> for CStr[src]

impl<'a, 'b> PartialEq<OsString> for &'a Path[src]

impl PartialEq<TryRecvError> for TryRecvError[src]

impl PartialEq<StripPrefixError> for StripPrefixError[src]

impl<'a, 'b> PartialEq<PathBuf> for OsString[src]

impl<T> PartialEq<SendError<T>> for SendError<T> where
    T: PartialEq<T>, 
[src]

impl<T> PartialEq<SyncOnceCell<T>> for SyncOnceCell<T> where
    T: PartialEq<T>, 
[src]

impl<'a, 'b> PartialEq<Cow<'a, OsStr>> for &'b OsStr[src]

impl PartialEq<SystemTime> for SystemTime[src]

impl PartialEq<Shutdown> for Shutdown[src]

impl PartialEq<CString> for CString[src]

impl<'a, 'b> PartialEq<OsStr> for &'a Path[src]

impl PartialEq<FromBytesWithNulError> for FromBytesWithNulError[src]

impl PartialEq<Output> for Output[src]

impl<'a, 'b> PartialEq<Cow<'b, OsStr>> for &'a Path[src]

impl PartialEq<RecvTimeoutError> for RecvTimeoutError[src]

impl PartialEq<NulError> for NulError[src]

impl<'a, 'b> PartialEq<OsStr> for PathBuf[src]

impl<'a, 'b> PartialEq<Cow<'a, Path>> for OsString[src]

impl<'a, 'b> PartialEq<Cow<'a, OsStr>> for OsStr[src]

impl PartialEq<PathBuf> for PathBuf[src]

impl<'a, 'b> PartialEq<OsString> for PathBuf[src]

impl<'a, 'b> PartialEq<Path> for PathBuf[src]

impl<'a, 'b> PartialEq<Path> for OsString[src]

impl PartialEq<Path> for Path[src]

impl PartialEq<AccessError> for AccessError[src]

impl<'a, 'b> PartialEq<Cow<'a, OsStr>> for PathBuf[src]

impl PartialEq<OsString> for str[src]

impl<T> PartialEq<Cursor<T>> for Cursor<T> where
    T: PartialEq<T>, 
[src]

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

impl<T> PartialEq<TrySendError<T>> for TrySendError<T> where
    T: PartialEq<T>, 
[src]

impl PartialEq<SocketAddrV6> for SocketAddrV6[src]

impl PartialEq<ErrorKind> for ErrorKind[src]

impl PartialEq<SeekFrom> for SeekFrom[src]

impl<'a, 'b> PartialEq<Cow<'a, Path>> for &'b Path[src]

impl<'a, 'b> PartialEq<&'a Path> for OsStr[src]

impl PartialEq<IpAddr> for Ipv6Addr[src]

impl PartialEq<AddrParseError> for AddrParseError[src]

impl PartialEq<Ipv4Addr> for IpAddr[src]

impl PartialEq<OsString> for OsString[src]

impl PartialEq<OsStr> for OsStr[src]

impl<'a, 'b> PartialEq<&'a OsStr> for OsString[src]

impl<'_> PartialEq<&'_ str> for OsString[src]

impl PartialEq<IntoStringError> for IntoStringError[src]

impl PartialEq<ThreadId> for ThreadId[src]

impl<'a, 'b> PartialEq<Path> for &'a OsStr[src]

impl<'a, 'b> PartialEq<PathBuf> for &'a Path[src]

impl PartialEq<WaitTimeoutResult> for WaitTimeoutResult[src]

impl<'a, 'b> PartialEq<Cow<'a, Path>> for Path[src]

impl<'a, 'b> PartialEq<Cow<'a, Path>> for &'b OsStr[src]

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

impl PartialEq<Permissions> for Permissions[src]

impl<'a, 'b> PartialEq<OsStr> for OsString[src]

impl<'a, 'b> PartialEq<Path> for OsStr[src]

impl<'a, 'b> PartialEq<PathBuf> for OsStr[src]

impl PartialEq<RecvError> for RecvError[src]

impl<'a, 'b> PartialEq<&'a Path> for OsString[src]

impl<'a, 'b> PartialEq<&'a OsStr> for PathBuf[src]

impl<'a, 'b> PartialEq<Cow<'a, OsStr>> for Path[src]

impl PartialEq<Ipv6MulticastScope> for Ipv6MulticastScope[src]

impl PartialEq<Ipv4Addr> for Ipv4Addr[src]

impl<'a, 'b> PartialEq<OsString> for &'a OsStr[src]

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

impl PartialEq<IpAddr> for Ipv4Addr[src]

impl<'a, 'b> PartialEq<&'a OsStr> for Path[src]

impl<'a, 'b> PartialEq<PathBuf> for &'a OsStr[src]

impl PartialEq<VarError> for VarError[src]

impl<'a, 'b> PartialEq<Cow<'a, Path>> for PathBuf[src]

impl PartialEq<SocketAddrV4> for SocketAddrV4[src]

impl PartialEq<str> for OsStr[src]

impl PartialEq<BacktraceStatus> for BacktraceStatus[src]

impl<'a, 'b> PartialEq<OsStr> for Path[src]

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

impl PartialEq<Ipv6Addr> for IpAddr[src]

impl<'a, 'b> PartialEq<PathBuf> for Path[src]

impl<'a, 'b> PartialEq<OsString> for OsStr[src]

impl PartialEq<str> for OsString[src]

impl PartialEq<FromVecWithNulError> for FromVecWithNulError[src]

impl<'a, 'b> PartialEq<Cow<'a, OsStr>> for OsString[src]

impl<'a> PartialEq<OsString> for &'a str[src]

impl PartialEq<FileType> for FileType[src]

impl PartialEq<IpAddr> for IpAddr[src]

impl PartialEq<ExitStatus> for ExitStatus[src]

impl<'a, 'b> PartialEq<Cow<'a, Path>> for OsStr[src]

impl<'a, 'b> PartialEq<OsString> for Path[src]

impl PartialEq<SocketAddr> for SocketAddr[src]

impl<Ret, A, B, C, D, E, F, G, H, I> PartialEq<extern "C" fn(A, B, C, D, E, F, G, H, I) -> Ret> for extern "C" fn(A, B, C, D, E, F, G, H, I) -> Ret[src]

impl<Ret, A, B, C, D> PartialEq<fn(A, B, C, D) -> Ret> for fn(A, B, C, D) -> Ret[src]

impl<Ret, A, B> PartialEq<unsafe fn(A, B) -> Ret> for unsafe fn(A, B) -> Ret[src]

impl<Ret, A> PartialEq<unsafe extern "C" fn(A) -> Ret> for unsafe extern "C" fn(A) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J, K> PartialEq<fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret> for fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret[src]

impl<Ret, A, B> PartialEq<fn(A, B) -> Ret> for fn(A, B) -> Ret[src]

impl PartialEq<i32> for i32[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J> PartialEq<unsafe fn(A, B, C, D, E, F, G, H, I, J) -> Ret> for unsafe fn(A, B, C, D, E, F, G, H, I, J) -> Ret[src]

impl PartialEq<u8> for u8[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> PartialEq<unsafe fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret> for unsafe fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> PartialEq<fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret> for fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret[src]

impl<A, B, C, D> PartialEq<(A, B, C, D)> for (A, B, C, D) where
    C: PartialEq<C>,
    A: PartialEq<A>,
    B: PartialEq<B>,
    D: PartialEq<D> + ?Sized
[src]

impl<Ret, A, B, C, D, E> PartialEq<unsafe fn(A, B, C, D, E) -> Ret> for unsafe fn(A, B, C, D, E) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I> PartialEq<unsafe extern "C" fn(A, B, C, D, E, F, G, H, I) -> Ret> for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I) -> Ret[src]

impl<Ret, A> PartialEq<unsafe fn(A) -> Ret> for unsafe fn(A) -> Ret[src]

impl<Dyn> PartialEq<DynMetadata<Dyn>> for DynMetadata<Dyn> where
    Dyn: ?Sized
[src]

impl<'_, A, B, const N: usize> PartialEq<&'_ mut [B]> for [A; N] where
    A: PartialEq<B>, 
[src]

impl<Ret, A, B, C, D, E, F, G> PartialEq<unsafe extern "C" fn(A, B, C, D, E, F, G, ...) -> Ret> for unsafe extern "C" fn(A, B, C, D, E, F, G, ...) -> Ret[src]

impl<Ret> PartialEq<unsafe fn() -> Ret> for unsafe fn() -> Ret[src]

impl PartialEq<NonZeroU128> for NonZeroU128[src]

impl PartialEq<ParseFloatError> for ParseFloatError[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> PartialEq<unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L, ...) -> Ret> for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L, ...) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H> PartialEq<unsafe fn(A, B, C, D, E, F, G, H) -> Ret> for unsafe fn(A, B, C, D, E, F, G, H) -> Ret[src]

impl<Ret, A> PartialEq<fn(A) -> Ret> for fn(A) -> Ret[src]

impl<Ret, A> PartialEq<extern "C" fn(A) -> Ret> for extern "C" fn(A) -> Ret[src]

impl PartialEq<i16> for i16[src]

impl PartialEq<PhantomPinned> for PhantomPinned[src]

impl<Ret, A, B, C, D, E> PartialEq<unsafe extern "C" fn(A, B, C, D, E) -> Ret> for unsafe extern "C" fn(A, B, C, D, E) -> Ret[src]

impl<Ret, A, B, C, D, E> PartialEq<unsafe extern "C" fn(A, B, C, D, E, ...) -> Ret> for unsafe extern "C" fn(A, B, C, D, E, ...) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J, K> PartialEq<unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret> for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret[src]

impl<Ret, A, B, C, D> PartialEq<extern "C" fn(A, B, C, D) -> Ret> for extern "C" fn(A, B, C, D) -> Ret[src]

impl<Ret, A, B, C> PartialEq<unsafe fn(A, B, C) -> Ret> for unsafe fn(A, B, C) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I> PartialEq<extern "C" fn(A, B, C, D, E, F, G, H, I, ...) -> Ret> for extern "C" fn(A, B, C, D, E, F, G, H, I, ...) -> Ret[src]

impl PartialEq<()> for ()[src]

impl<Ret, A, B, C, D, E, F, G> PartialEq<unsafe extern "C" fn(A, B, C, D, E, F, G) -> Ret> for unsafe extern "C" fn(A, B, C, D, E, F, G) -> Ret[src]

impl<Ret, A, B, C> PartialEq<extern "C" fn(A, B, C, ...) -> Ret> for extern "C" fn(A, B, C, ...) -> Ret[src]

impl<Ret, A, B, C, D, E, F> PartialEq<extern "C" fn(A, B, C, D, E, F) -> Ret> for extern "C" fn(A, B, C, D, E, F) -> Ret[src]

impl PartialEq<NonZeroIsize> for NonZeroIsize[src]

impl PartialEq<!> for ![src]

impl<Ret, A, B, C, D, E, F, G, H> PartialEq<unsafe extern "C" fn(A, B, C, D, E, F, G, H) -> Ret> for unsafe extern "C" fn(A, B, C, D, E, F, G, H) -> Ret[src]

impl PartialEq<RawWakerVTable> for RawWakerVTable[src]

impl PartialEq<NonZeroI16> for NonZeroI16[src]

impl<Ret, A> PartialEq<extern "C" fn(A, ...) -> Ret> for extern "C" fn(A, ...) -> Ret[src]

impl PartialEq<i128> for i128[src]

impl PartialEq<FpCategory> for FpCategory[src]

impl<Ret, A, B> PartialEq<extern "C" fn(A, B) -> Ret> for extern "C" fn(A, B) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H> PartialEq<fn(A, B, C, D, E, F, G, H) -> Ret> for fn(A, B, C, D, E, F, G, H) -> Ret[src]

impl<Ret, A, B> PartialEq<extern "C" fn(A, B, ...) -> Ret> for extern "C" fn(A, B, ...) -> Ret[src]

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

impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> PartialEq<unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret> for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret[src]

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

impl<Ret, A, B, C, D, E, F, G, H, I, J, K> PartialEq<extern "C" fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret> for extern "C" fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> PartialEq<extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L, ...) -> Ret> for extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L, ...) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J> PartialEq<unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, ...) -> Ret> for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, ...) -> Ret[src]

impl PartialEq<DecodeUtf16Error> for DecodeUtf16Error[src]

impl<Ret> PartialEq<unsafe extern "C" fn() -> Ret> for unsafe extern "C" fn() -> Ret[src]

impl<'_, A, B, const N: usize> PartialEq<&'_ [B]> for [A; N] where
    A: PartialEq<B>, 
[src]

impl<T> PartialEq<OnceCell<T>> for OnceCell<T> where
    T: PartialEq<T>, 
[src]

impl<Ret, A, B, C, D, E, F> PartialEq<unsafe extern "C" fn(A, B, C, D, E, F, ...) -> Ret> for unsafe extern "C" fn(A, B, C, D, E, F, ...) -> Ret[src]

impl<Ret, A, B, C, D, E, F> PartialEq<unsafe fn(A, B, C, D, E, F) -> Ret> for unsafe fn(A, B, C, D, E, F) -> Ret[src]

impl PartialEq<u16> for u16[src]

impl<P, Q> PartialEq<Pin<Q>> for Pin<P> where
    P: Deref,
    Q: Deref,
    <P as Deref>::Target: PartialEq<<Q as Deref>::Target>, 
[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J, K> PartialEq<unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, ...) -> Ret> for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, ...) -> Ret[src]

impl PartialEq<NonZeroI128> for NonZeroI128[src]

impl PartialEq<NonZeroI8> for NonZeroI8[src]

impl<Ret, A> PartialEq<unsafe extern "C" fn(A, ...) -> Ret> for unsafe extern "C" fn(A, ...) -> Ret[src]

impl<A, B, const N: usize> PartialEq<[B; N]> for [A; N] where
    A: PartialEq<B>, 
[src]

impl<T> PartialEq<Wrapping<T>> for Wrapping<T> where
    T: PartialEq<T>, 
[src]

impl<A, B, C, D, E, F, G, H> PartialEq<(A, B, C, D, E, F, G, H)> for (A, B, C, D, E, F, G, H) where
    C: PartialEq<C>,
    F: PartialEq<F>,
    E: PartialEq<E>,
    G: PartialEq<G>,
    H: PartialEq<H> + ?Sized,
    A: PartialEq<A>,
    B: PartialEq<B>,
    D: PartialEq<D>, 
[src]

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

impl<'_, '_, A, B> PartialEq<&'_ B> for &'_ mut A where
    A: PartialEq<B> + ?Sized,
    B: ?Sized
[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J, K> PartialEq<unsafe fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret> for unsafe fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J> PartialEq<fn(A, B, C, D, E, F, G, H, I, J) -> Ret> for fn(A, B, C, D, E, F, G, H, I, J) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J> PartialEq<extern "C" fn(A, B, C, D, E, F, G, H, I, J) -> Ret> for extern "C" fn(A, B, C, D, E, F, G, H, I, J) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I> PartialEq<unsafe fn(A, B, C, D, E, F, G, H, I) -> Ret> for unsafe fn(A, B, C, D, E, F, G, H, I) -> Ret[src]

impl PartialEq<f64> for f64[src]

impl PartialEq<NonZeroU64> for NonZeroU64[src]

impl<'a> PartialEq<Utf8LossyChunk<'a>> for Utf8LossyChunk<'a>[src]

impl PartialEq<NonZeroI32> for NonZeroI32[src]

impl<A, B, C, D, E, F, G, H, I, J, K, L> PartialEq<(A, B, C, D, E, F, G, H, I, J, K, L)> for (A, B, C, D, E, F, G, H, I, J, K, L) where
    C: PartialEq<C>,
    F: PartialEq<F>,
    E: PartialEq<E>,
    I: PartialEq<I>,
    G: PartialEq<G>,
    H: PartialEq<H>,
    A: PartialEq<A>,
    B: PartialEq<B>,
    D: PartialEq<D>,
    J: PartialEq<J>,
    K: PartialEq<K>,
    L: PartialEq<L> + ?Sized
[src]

impl<A, B, C> PartialEq<(A, B, C)> for (A, B, C) where
    C: PartialEq<C> + ?Sized,
    A: PartialEq<A>,
    B: PartialEq<B>, 
[src]

impl<Ret, A, B, C, D, E> PartialEq<extern "C" fn(A, B, C, D, E) -> Ret> for extern "C" fn(A, B, C, D, E) -> Ret[src]

impl<Ret, A, B, C, D, E, F> PartialEq<fn(A, B, C, D, E, F) -> Ret> for fn(A, B, C, D, E, F) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G> PartialEq<unsafe fn(A, B, C, D, E, F, G) -> Ret> for unsafe fn(A, B, C, D, E, F, G) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H> PartialEq<extern "C" fn(A, B, C, D, E, F, G, H) -> Ret> for extern "C" fn(A, B, C, D, E, F, G, H) -> Ret[src]

impl<Ret, A, B, C, D> PartialEq<unsafe extern "C" fn(A, B, C, D) -> Ret> for unsafe extern "C" fn(A, B, C, D) -> Ret[src]

impl<'_, A, B, const N: usize> PartialEq<[A; N]> for &'_ mut [B] where
    B: PartialEq<A>, 
[src]

impl<Ret, A, B, C, D, E, F, G> PartialEq<fn(A, B, C, D, E, F, G) -> Ret> for fn(A, B, C, D, E, F, G) -> Ret[src]

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

impl<T> PartialEq<Poll<T>> for Poll<T> where
    T: PartialEq<T>, 
[src]

impl PartialEq<NonZeroU32> for NonZeroU32[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J> PartialEq<extern "C" fn(A, B, C, D, E, F, G, H, I, J, ...) -> Ret> for extern "C" fn(A, B, C, D, E, F, G, H, I, J, ...) -> Ret[src]

impl<A, B, C, D, E, F> PartialEq<(A, B, C, D, E, F)> for (A, B, C, D, E, F) where
    C: PartialEq<C>,
    F: PartialEq<F> + ?Sized,
    E: PartialEq<E>,
    A: PartialEq<A>,
    B: PartialEq<B>,
    D: PartialEq<D>, 
[src]

impl<Ret, A, B, C> PartialEq<unsafe extern "C" fn(A, B, C) -> Ret> for unsafe extern "C" fn(A, B, C) -> Ret[src]

impl<'_, '_, A, B> PartialEq<&'_ mut B> for &'_ A where
    A: PartialEq<B> + ?Sized,
    B: ?Sized
[src]

impl<A, B, C, D, E, F, G> PartialEq<(A, B, C, D, E, F, G)> for (A, B, C, D, E, F, G) where
    C: PartialEq<C>,
    F: PartialEq<F>,
    E: PartialEq<E>,
    G: PartialEq<G> + ?Sized,
    A: PartialEq<A>,
    B: PartialEq<B>,
    D: PartialEq<D>, 
[src]

impl<Ret, A, B> PartialEq<unsafe extern "C" fn(A, B) -> Ret> for unsafe extern "C" fn(A, B) -> Ret[src]

impl PartialEq<char> for char[src]

impl PartialEq<isize> for isize[src]

impl<Ret, A, B, C, D> PartialEq<extern "C" fn(A, B, C, D, ...) -> Ret> for extern "C" fn(A, B, C, D, ...) -> Ret[src]

impl<Ret, A, B, C> PartialEq<fn(A, B, C) -> Ret> for fn(A, B, C) -> Ret[src]

impl<Ret, A, B, C, D> PartialEq<unsafe extern "C" fn(A, B, C, D, ...) -> Ret> for unsafe extern "C" fn(A, B, C, D, ...) -> Ret[src]

impl PartialEq<RawWaker> for RawWaker[src]

impl<Ret> PartialEq<fn() -> Ret> for fn() -> Ret[src]

impl<A, B, C, D, E> PartialEq<(A, B, C, D, E)> for (A, B, C, D, E) where
    C: PartialEq<C>,
    E: PartialEq<E> + ?Sized,
    A: PartialEq<A>,
    B: PartialEq<B>,
    D: PartialEq<D>, 
[src]

impl PartialEq<u32> for u32[src]

impl PartialEq<TypeId> for TypeId[src]

impl PartialEq<u128> for u128[src]

impl PartialEq<TryFromIntError> for TryFromIntError[src]

impl PartialEq<IntErrorKind> for IntErrorKind[src]

impl<A> PartialEq<(A,)> for (A,) where
    A: PartialEq<A> + ?Sized
[src]

impl<Ret> PartialEq<extern "C" fn() -> Ret> for extern "C" fn() -> Ret[src]

impl<Ret, A, B, C, D, E, F, G> PartialEq<extern "C" fn(A, B, C, D, E, F, G, ...) -> Ret> for extern "C" fn(A, B, C, D, E, F, G, ...) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G> PartialEq<extern "C" fn(A, B, C, D, E, F, G) -> Ret> for extern "C" fn(A, B, C, D, E, F, G) -> Ret[src]

impl<'_, A, B, const N: usize> PartialEq<[A; N]> for &'_ [B] where
    B: PartialEq<A>, 
[src]

impl PartialEq<NonZeroI64> for NonZeroI64[src]

impl<A, B> PartialEq<(A, B)> for (A, B) where
    A: PartialEq<A>,
    B: PartialEq<B> + ?Sized
[src]

impl PartialEq<usize> for usize[src]

impl<Ret, A, B, C, D, E, F> PartialEq<unsafe extern "C" fn(A, B, C, D, E, F) -> Ret> for unsafe extern "C" fn(A, B, C, D, E, F) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H> PartialEq<extern "C" fn(A, B, C, D, E, F, G, H, ...) -> Ret> for extern "C" fn(A, B, C, D, E, F, G, H, ...) -> Ret[src]

impl PartialEq<NonZeroU8> for NonZeroU8[src]

impl<Ret, A, B, C, D, E> PartialEq<fn(A, B, C, D, E) -> Ret> for fn(A, B, C, D, E) -> Ret[src]

impl<A, B, const N: usize> PartialEq<[A; N]> for [B] where
    B: PartialEq<A>, 
[src]

impl<Ret, A, B, C, D> PartialEq<unsafe fn(A, B, C, D) -> Ret> for unsafe fn(A, B, C, D) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J> PartialEq<unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J) -> Ret> for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> PartialEq<extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret> for extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret[src]

impl<Ret, A, B, C> PartialEq<extern "C" fn(A, B, C) -> Ret> for extern "C" fn(A, B, C) -> Ret[src]

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

impl<'_, '_, A, B> PartialEq<&'_ B> for &'_ A where
    A: PartialEq<B> + ?Sized,
    B: ?Sized
[src]

impl<A, B, const N: usize> PartialEq<[B]> for [A; N] where
    A: PartialEq<B>, 
[src]

impl PartialEq<f32> for f32[src]

impl<A, B, C, D, E, F, G, H, I, J, K> PartialEq<(A, B, C, D, E, F, G, H, I, J, K)> for (A, B, C, D, E, F, G, H, I, J, K) where
    C: PartialEq<C>,
    F: PartialEq<F>,
    E: PartialEq<E>,
    I: PartialEq<I>,
    G: PartialEq<G>,
    H: PartialEq<H>,
    A: PartialEq<A>,
    B: PartialEq<B>,
    D: PartialEq<D>,
    J: PartialEq<J>,
    K: PartialEq<K> + ?Sized
[src]

impl PartialEq<Ordering> for Ordering[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J, K> PartialEq<extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, ...) -> Ret> for extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, ...) -> Ret[src]

impl PartialEq<bool> for bool[src]

impl<'a> PartialEq<Location<'a>> for Location<'a>[src]

impl PartialEq<ParseCharError> for ParseCharError[src]

impl PartialEq<u64> for u64[src]

impl<Ret, A, B> PartialEq<unsafe extern "C" fn(A, B, ...) -> Ret> for unsafe extern "C" fn(A, B, ...) -> Ret[src]

impl<Ret, A, B, C> PartialEq<unsafe extern "C" fn(A, B, C, ...) -> Ret> for unsafe extern "C" fn(A, B, C, ...) -> Ret[src]

impl PartialEq<str> for str[src]

impl PartialEq<NonZeroU16> for NonZeroU16[src]

impl PartialEq<NonZeroUsize> for NonZeroUsize[src]

impl<T> PartialEq<RefCell<T>> for RefCell<T> where
    T: PartialEq<T> + ?Sized
[src]

pub fn eq(&self, other: &RefCell<T>) -> bool[src]

Panics

Panics if the value in either RefCell is currently borrowed.

impl<Ret, A, B, C, D, E, F, G, H> PartialEq<unsafe extern "C" fn(A, B, C, D, E, F, G, H, ...) -> Ret> for unsafe extern "C" fn(A, B, C, D, E, F, G, H, ...) -> Ret[src]

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

impl PartialEq<i64> for i64[src]

impl<A, B, C, D, E, F, G, H, I, J> PartialEq<(A, B, C, D, E, F, G, H, I, J)> for (A, B, C, D, E, F, G, H, I, J) where
    C: PartialEq<C>,
    F: PartialEq<F>,
    E: PartialEq<E>,
    I: PartialEq<I>,
    G: PartialEq<G>,
    H: PartialEq<H>,
    A: PartialEq<A>,
    B: PartialEq<B>,
    D: PartialEq<D>,
    J: PartialEq<J> + ?Sized
[src]

impl PartialEq<i8> for i8[src]

impl<Ret, A, B, C, D, E> PartialEq<extern "C" fn(A, B, C, D, E, ...) -> Ret> for extern "C" fn(A, B, C, D, E, ...) -> Ret[src]

impl PartialEq<Duration> for Duration[src]

impl<'_, '_, A, B> PartialEq<&'_ mut B> for &'_ mut A where
    A: PartialEq<B> + ?Sized,
    B: ?Sized
[src]

impl PartialEq<CpuidResult> for CpuidResult[src]

impl<A, B, C, D, E, F, G, H, I> PartialEq<(A, B, C, D, E, F, G, H, I)> for (A, B, C, D, E, F, G, H, I) where
    C: PartialEq<C>,
    F: PartialEq<F>,
    E: PartialEq<E>,
    I: PartialEq<I> + ?Sized,
    G: PartialEq<G>,
    H: PartialEq<H>,
    A: PartialEq<A>,
    B: PartialEq<B>,
    D: PartialEq<D>, 
[src]

impl<Ret, A, B, C, D, E, F> PartialEq<extern "C" fn(A, B, C, D, E, F, ...) -> Ret> for extern "C" fn(A, B, C, D, E, F, ...) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I> PartialEq<unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, ...) -> Ret> for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, ...) -> Ret[src]

impl PartialEq<CharTryFromError> for CharTryFromError[src]

impl PartialEq<ParseIntError> for ParseIntError[src]

impl<Ret, A, B, C, D, E, F, G, H, I> PartialEq<fn(A, B, C, D, E, F, G, H, I) -> Ret> for fn(A, B, C, D, E, F, G, H, I) -> Ret[src]

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

pub fn eq(&self, other: &Arc<T>) -> bool[src]

Equality for two Arcs.

Two Arcs are equal if their inner values are equal, even if they are stored in different allocation.

If T also implements Eq (implying reflexivity of equality), two Arcs that point to the same allocation are always equal.

Examples

use std::sync::Arc;

let five = Arc::new(5);

assert!(five == Arc::new(5));

pub fn ne(&self, other: &Arc<T>) -> bool[src]

Inequality for two Arcs.

Two Arcs are unequal if their inner values are unequal.

If T also implements Eq (implying reflexivity of equality), two Arcs that point to the same value are never unequal.

Examples

use std::sync::Arc;

let five = Arc::new(5);

assert!(five != Arc::new(6));

impl<'_, T, U, A> PartialEq<Vec<U, A>> for &'_ [T] where
    T: PartialEq<U>,
    A: Allocator
[src]

impl<'a, 'b> PartialEq<String> for str[src]

impl<'_, T, U, A> PartialEq<Vec<U, A>> for &'_ mut [T] where
    T: PartialEq<U>,
    A: Allocator
[src]

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

pub fn eq(&self, other: &Rc<T>) -> bool[src]

Equality for two Rcs.

Two Rcs are equal if their inner values are equal, even if they are stored in different allocation.

If T also implements Eq (implying reflexivity of equality), two Rcs that point to the same allocation are always equal.

Examples

use std::rc::Rc;

let five = Rc::new(5);

assert!(five == Rc::new(5));

pub fn ne(&self, other: &Rc<T>) -> bool[src]

Inequality for two Rcs.

Two Rcs are unequal if their inner values are unequal.

If T also implements Eq (implying reflexivity of equality), two Rcs that point to the same allocation are never unequal.

Examples

use std::rc::Rc;

let five = Rc::new(5);

assert!(five != Rc::new(6));

impl<'a, 'b> PartialEq<String> for &'a str[src]

impl<'a, 'b> PartialEq<Cow<'a, str>> for &'b str[src]

impl<T, U, A> PartialEq<Vec<U, A>> for [T] where
    T: PartialEq<U>,
    A: Allocator
[src]

impl<'a, 'b> PartialEq<Cow<'a, str>> for str[src]

impl PartialEq<_Unwind_Action> for _Unwind_Action

impl PartialEq<_Unwind_Reason_Code> for _Unwind_Reason_Code

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Implementors

impl PartialEq<CompareResult> for CompareResult[src]

impl PartialEq<Needed> for Needed[src]

impl PartialEq<ErrorKind> for nom::error::ErrorKind[src]

impl PartialEq<VerboseErrorKind> for VerboseErrorKind[src]

impl PartialEq<Ordering> for nom::lib::std::cmp::Ordering[src]

impl PartialEq<TryReserveError> for TryReserveError[src]

impl PartialEq<Infallible> for Infallible1.34.0[src]

impl PartialEq<SearchStep> for SearchStep[src]

impl PartialEq<Endianness> for Endianness[src]

impl PartialEq<AllocError> for AllocError[src]

impl PartialEq<Layout> for Layout1.28.0[src]

impl PartialEq<LayoutError> for LayoutError1.50.0[src]

impl PartialEq<Error> for Error[src]

impl PartialEq<RangeFull> for RangeFull[src]

impl PartialEq<NoneError> for NoneError[src]

impl PartialEq<ParseBoolError> for ParseBoolError[src]

impl PartialEq<Utf8Error> for Utf8Error[src]

impl PartialEq<FromUtf8Error> for FromUtf8Error[src]

impl PartialEq<String> for String[src]

impl<'_, '_, T, U> PartialEq<&'_ [U]> for Cow<'_, [T]> where
    T: PartialEq<U> + Clone
[src]

impl<'_, '_, T, U> PartialEq<&'_ mut [U]> for Cow<'_, [T]> where
    T: PartialEq<U> + Clone
[src]

impl<'_, A, B> PartialEq<&'_ [B]> for VecDeque<A> where
    A: PartialEq<B>, 
1.17.0[src]

impl<'_, A, B> PartialEq<&'_ mut [B]> for VecDeque<A> where
    A: PartialEq<B>, 
1.17.0[src]

impl<'_, A, B, const N: usize> PartialEq<&'_ [B; N]> for VecDeque<A> where
    A: PartialEq<B>, 
1.17.0[src]

impl<'_, A, B, const N: usize> PartialEq<&'_ mut [B; N]> for VecDeque<A> where
    A: PartialEq<B>, 
1.17.0[src]

impl<'_, T, U, A> PartialEq<&'_ [U]> for Vec<T, A> where
    T: PartialEq<U>,
    A: Allocator
[src]

impl<'_, T, U, A> PartialEq<&'_ mut [U]> for Vec<T, A> where
    T: PartialEq<U>,
    A: Allocator
[src]

impl<'_, T, U, A> PartialEq<Vec<U, A>> for Cow<'_, [T]> where
    T: PartialEq<U> + Clone,
    A: Allocator
[src]

impl<'_, T, U, A, const N: usize> PartialEq<&'_ [U; N]> for Vec<T, A> where
    T: PartialEq<U>,
    A: Allocator
[src]

impl<'a, 'b> PartialEq<&'a str> for String[src]

impl<'a, 'b> PartialEq<&'a Path> for Cow<'b, OsStr>1.8.0[src]

impl<'a, 'b> PartialEq<&'b str> for Cow<'a, str>[src]

impl<'a, 'b> PartialEq<&'b OsStr> for Cow<'a, OsStr>1.8.0[src]

impl<'a, 'b> PartialEq<&'b OsStr> for Cow<'a, Path>1.8.0[src]

impl<'a, 'b> PartialEq<&'b Path> for Cow<'a, Path>1.6.0[src]

impl<'a, 'b> PartialEq<Cow<'a, str>> for String[src]

impl<'a, 'b> PartialEq<str> for Cow<'a, str>[src]

impl<'a, 'b> PartialEq<str> for String[src]

impl<'a, 'b> PartialEq<String> for Cow<'a, str>[src]

impl<'a, 'b> PartialEq<OsStr> for Cow<'a, OsStr>1.8.0[src]

impl<'a, 'b> PartialEq<OsStr> for Cow<'a, Path>1.8.0[src]

impl<'a, 'b> PartialEq<OsString> for Cow<'a, OsStr>1.8.0[src]

impl<'a, 'b> PartialEq<OsString> for Cow<'a, Path>1.8.0[src]

impl<'a, 'b> PartialEq<Path> for Cow<'a, OsStr>1.8.0[src]

impl<'a, 'b> PartialEq<Path> for Cow<'a, Path>1.6.0[src]

impl<'a, 'b> PartialEq<PathBuf> for Cow<'a, OsStr>1.8.0[src]

impl<'a, 'b> PartialEq<PathBuf> for Cow<'a, Path>1.6.0[src]

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

impl<A> PartialEq<VecDeque<A>> for VecDeque<A> where
    A: PartialEq<A>, 
[src]

impl<A, B> PartialEq<Vec<B, Global>> for VecDeque<A> where
    A: PartialEq<B>, 
1.17.0[src]

impl<A, B, const N: usize> PartialEq<[B; N]> for VecDeque<A> where
    A: PartialEq<B>, 
1.17.0[src]

impl<B, C> PartialEq<ControlFlow<B, C>> for ControlFlow<B, C> where
    C: PartialEq<C>,
    B: PartialEq<B>, 
[src]

impl<E: PartialEq> PartialEq<Err<E>> for Err<E>[src]

impl<H> PartialEq<BuildHasherDefault<H>> for BuildHasherDefault<H>1.29.0[src]

impl<I: PartialEq> PartialEq<VerboseError<I>> for VerboseError<I>[src]

impl<Idx> PartialEq<Range<Idx>> for Range<Idx> where
    Idx: PartialEq<Idx>, 
[src]

impl<Idx> PartialEq<RangeFrom<Idx>> for RangeFrom<Idx> where
    Idx: PartialEq<Idx>, 
[src]

impl<Idx> PartialEq<RangeInclusive<Idx>> for RangeInclusive<Idx> where
    Idx: PartialEq<Idx>, 
1.26.0[src]

impl<Idx> PartialEq<RangeTo<Idx>> for RangeTo<Idx> where
    Idx: PartialEq<Idx>, 
[src]

impl<Idx> PartialEq<RangeToInclusive<Idx>> for RangeToInclusive<Idx> where
    Idx: PartialEq<Idx>, 
1.26.0[src]

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

impl<K, V, S> PartialEq<HashMap<K, V, S>> for HashMap<K, V, S> where
    K: Eq + Hash,
    S: BuildHasher,
    V: PartialEq<V>, 
[src]

impl<T> PartialEq<Bound<T>> for Bound<T> where
    T: PartialEq<T>, 
1.17.0[src]

impl<T> PartialEq<Option<T>> for Option<T> where
    T: PartialEq<T>, 
[src]

impl<T> PartialEq<Reverse<T>> for Reverse<T> where
    T: PartialEq<T>, 
1.19.0[src]

impl<T> PartialEq<BTreeSet<T>> for BTreeSet<T> where
    T: PartialEq<T>, 
[src]

impl<T> PartialEq<LinkedList<T>> for LinkedList<T> where
    T: PartialEq<T>, 
[src]

impl<T> PartialEq<Discriminant<T>> for Discriminant<T>1.21.0[src]

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

impl<T, A> PartialEq<Box<T, A>> for Box<T, A> where
    T: PartialEq<T> + ?Sized,
    A: Allocator
[src]

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

impl<T, S> PartialEq<HashSet<T, S>> for HashSet<T, S> where
    T: Eq + Hash,
    S: BuildHasher
[src]

impl<T, U, A> PartialEq<[U]> for Vec<T, A> where
    T: PartialEq<U>,
    A: Allocator
1.48.0[src]

impl<T, U, A> PartialEq<Vec<U, A>> for Vec<T, A> where
    T: PartialEq<U>,
    A: Allocator
[src]

impl<T, U, A, const N: usize> PartialEq<[U; N]> for Vec<T, A> where
    T: PartialEq<U>,
    A: Allocator
[src]

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

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