1.0.0[][src]Trait std::cmp::Eq

pub trait Eq: PartialEq<Self> { }
[]

Trait for equality comparisons which are equivalence relations.

This means, that in addition to a == b and a != b being strict inverses, the equality must be (for all a, b and c):

This property cannot be checked by the compiler, and therefore Eq implies PartialEq, and has no extra methods.

Derivable

This trait can be used with #[derive]. When derived, because Eq has no extra methods, it is only informing the compiler that this is an equivalence relation rather than a partial equivalence relation. Note that the derive strategy requires all fields are Eq, which isn't always desired.

How can I implement Eq?

If you cannot use the derive strategy, specify that your type implements Eq, which has no methods:

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
    }
}
impl Eq for Book {}Run

Implementations on Foreign Types

impl Eq for CpuidResult[src]

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

impl<T, S> Eq for HashSet<T, S> where
    S: BuildHasher,
    T: Eq + Hash

impl Eq for CollectionAllocErr

impl<K, V, S> Eq for HashMap<K, V, S> where
    K: Eq + Hash,
    S: BuildHasher,
    V: Eq

Implementors

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

impl Eq for std::collections::CollectionAllocErr[src]

impl Eq for Infallible[src]

impl Eq for VarError[src]

impl Eq for ErrorKind[src]

impl Eq for SeekFrom[src]

impl Eq for IpAddr[src]

impl Eq for Ipv6MulticastScope[src]

impl Eq for Shutdown[src]

impl Eq for SocketAddr[src]

impl Eq for FpCategory[src]

impl Eq for IntErrorKind[src]

impl Eq for SearchStep[src]

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

impl Eq for RecvTimeoutError[src]

impl Eq for TryRecvError[src]

impl Eq for bool[src]

impl Eq for char[src]

impl Eq for i128[src]

impl Eq for i16[src]

impl Eq for i32[src]

impl Eq for i64[src]

impl Eq for i8[src]

impl Eq for isize[src]

impl Eq for ![src]

impl Eq for str[src]

impl Eq for u128[src]

impl Eq for u16[src]

impl Eq for u32[src]

impl Eq for u64[src]

impl Eq for u8[src]

impl Eq for ()[src]

impl Eq for usize[src]

impl Eq for AllocErr[src]

impl Eq for CannotReallocInPlace[src]

impl Eq for Layout[src]

impl Eq for LayoutErr[src]

impl Eq for TypeId[src]

impl Eq for CharTryFromError[src]

impl Eq for DecodeUtf16Error[src]

impl Eq for ParseCharError[src]

impl Eq for UnicodeVersion[src]

impl Eq for CStr[src]

impl Eq for CString[src]

impl Eq for FromBytesWithNulError[src]

impl Eq for IntoStringError[src]

impl Eq for NulError[src]

impl Eq for OsStr[src]

impl Eq for OsString[src]

impl Eq for Error[src]

impl Eq for FileType[src]

impl Eq for Permissions[src]

impl Eq for PhantomPinned[src]

impl Eq for AddrParseError[src]

impl Eq for Ipv4Addr[src]

impl Eq for Ipv6Addr[src]

impl Eq for SocketAddrV4[src]

impl Eq for SocketAddrV6[src]

impl Eq for NonZeroI128[src]

impl Eq for NonZeroI16[src]

impl Eq for NonZeroI32[src]

impl Eq for NonZeroI64[src]

impl Eq for NonZeroI8[src]

impl Eq for NonZeroIsize[src]

impl Eq for NonZeroU128[src]

impl Eq for NonZeroU16[src]

impl Eq for NonZeroU32[src]

impl Eq for NonZeroU64[src]

impl Eq for NonZeroU8[src]

impl Eq for NonZeroUsize[src]

impl Eq for ParseFloatError[src]

impl Eq for ParseIntError[src]

impl Eq for TryFromIntError[src]

impl Eq for RangeFull[src]

impl Eq for NoneError[src]

impl Eq for Path[src]

impl Eq for PathBuf[src]

impl Eq for StripPrefixError[src]

impl Eq for ExitStatus[src]

impl Eq for Output[src]

impl Eq for ParseBoolError[src]

impl Eq for Utf8Error[src]

impl Eq for String[src]

impl Eq for RecvError[src]

impl Eq for WaitTimeoutResult[src]

impl Eq for ThreadId[src]

impl Eq for Duration[src]

impl Eq for Instant[src]

impl Eq for SystemTime[src]

impl<'_> Eq for Components<'_>[src]

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

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

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

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

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

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

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

impl<A> Eq for VecDeque<A> where
    A: Eq
[src]

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

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

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

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

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

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

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

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

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

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

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

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

impl<Idx> Eq for Range<Idx> where
    Idx: Eq
[src]

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

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

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

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

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

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

impl<P> Eq for Pin<P> where
    P: Eq
[src]

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

impl<T> Eq for [T; 0] where
    T: Eq
[src]

impl<T> Eq for [T; 1] where
    T: Eq
[src]

impl<T> Eq for [T; 2] where
    T: Eq
[src]

impl<T> Eq for [T; 3] where
    T: Eq
[src]

impl<T> Eq for [T; 4] where
    T: Eq
[src]

impl<T> Eq for [T; 5] where
    T: Eq
[src]

impl<T> Eq for [T; 6] where
    T: Eq
[src]

impl<T> Eq for [T; 7] where
    T: Eq
[src]

impl<T> Eq for [T; 8] where
    T: Eq
[src]

impl<T> Eq for [T; 9] where
    T: Eq
[src]

impl<T> Eq for [T; 10] where
    T: Eq
[src]

impl<T> Eq for [T; 11] where
    T: Eq
[src]

impl<T> Eq for [T; 12] where
    T: Eq
[src]

impl<T> Eq for [T; 13] where
    T: Eq
[src]

impl<T> Eq for [T; 14] where
    T: Eq
[src]

impl<T> Eq for [T; 15] where
    T: Eq
[src]

impl<T> Eq for [T; 16] where
    T: Eq
[src]

impl<T> Eq for [T; 17] where
    T: Eq
[src]

impl<T> Eq for [T; 18] where
    T: Eq
[src]

impl<T> Eq for [T; 19] where
    T: Eq
[src]

impl<T> Eq for [T; 20] where
    T: Eq
[src]

impl<T> Eq for [T; 21] where
    T: Eq
[src]

impl<T> Eq for [T; 22] where
    T: Eq
[src]

impl<T> Eq for [T; 23] where
    T: Eq
[src]

impl<T> Eq for [T; 24] where
    T: Eq
[src]

impl<T> Eq for [T; 25] where
    T: Eq
[src]

impl<T> Eq for [T; 26] where
    T: Eq
[src]

impl<T> Eq for [T; 27] where
    T: Eq
[src]

impl<T> Eq for [T; 28] where
    T: Eq
[src]

impl<T> Eq for [T; 29] where
    T: Eq
[src]

impl<T> Eq for [T; 30] where
    T: Eq
[src]

impl<T> Eq for [T; 31] where
    T: Eq
[src]

impl<T> Eq for [T; 32] where
    T: Eq
[src]

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

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

impl<T> Eq for [T] where
    T: Eq
[src]

impl<T> Eq for Box<T> where
    T: Eq + ?Sized
[src]

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

impl<T: Eq> Eq for SendError<T>[src]

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

impl<T: ?Sized + Eq> Eq for Box<T>

impl<K: Eq, V: Eq> Eq for BTreeMap<K, V>

impl<T: Eq> Eq for BTreeSet<T>

impl<T: Eq> Eq for LinkedList<T>

impl<A: Eq> Eq for VecDeque<A>

impl Eq for CollectionAllocErr

impl<T: ?Sized + Eq> Eq for Arc<T>

impl<T: ?Sized + Eq> Eq for Rc<T>

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

impl Eq for String

impl<T: Eq> Eq for Vec<T>

impl Eq for LineColumn

impl Eq for SourceFile

impl Eq for Delimiter

impl Eq for Spacing

impl Eq for Concurrent

impl Eq for TestName

impl Eq for NamePadding

impl Eq for BenchMode

impl Eq for ShouldPanic

impl Eq for TestDesc

impl Eq for OutputFormat

impl Eq for RunIgnored