1.0.0[−][src]Trait std::cmp::Eq
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):
- reflexive:
a == a; - symmetric:
a == bimpliesb == a; and - transitive:
a == bandb == cimpliesa == 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<'a> Eq for Utf8LossyChunk<'a>[src]
impl Eq for CpuidResult[src]
impl Eq for PrintFmt[src]
impl<T, S> Eq for HashSet<T, S> where
S: BuildHasher,
T: Eq + Hash,
S: BuildHasher,
T: Eq + Hash,
impl<K, V, S> Eq for HashMap<K, V, S> where
K: Eq + Hash,
S: BuildHasher,
V: Eq,
K: Eq + Hash,
S: BuildHasher,
V: Eq,
impl Eq for CollectionAllocErr
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Implementors
impl Eq for BacktraceStatus[src]
impl Eq for std::cmp::Ordering[src]
impl Eq for TryReserveError[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 FromUtf8Error[src]
impl Eq for String[src]
impl Eq for RecvError[src]
impl Eq for WaitTimeoutResult[src]
impl Eq for AccessError[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]
A: Eq + ?Sized,
impl<'_, A> Eq for &'_ mut A where
A: Eq + ?Sized, [src]
A: Eq + ?Sized,
impl<'_, B> Eq for Cow<'_, B> where
B: Eq + ToOwned + ?Sized, [src]
B: Eq + ToOwned + ?Sized,
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]
A: Eq + ?Sized,
impl<A> Eq for VecDeque<A> where
A: Eq, [src]
A: Eq,
impl<A, B> Eq for (A, B) where
A: Eq,
B: Eq + ?Sized, [src]
A: Eq,
B: Eq + ?Sized,
impl<A, B, C> Eq for (A, B, C) where
A: Eq,
B: Eq,
C: Eq + ?Sized, [src]
A: Eq,
B: Eq,
C: Eq + ?Sized,
impl<A, B, C, D> Eq for (A, B, C, D) where
A: Eq,
B: Eq,
C: Eq,
D: Eq + ?Sized, [src]
A: Eq,
B: Eq,
C: Eq,
D: Eq + ?Sized,
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]
A: Eq,
B: Eq,
C: Eq,
D: Eq,
E: Eq + ?Sized,
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]
A: Eq,
B: Eq,
C: Eq,
D: Eq,
E: Eq,
F: Eq + ?Sized,
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]
A: Eq,
B: Eq,
C: Eq,
D: Eq,
E: Eq,
F: Eq,
G: Eq + ?Sized,
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]
A: Eq,
B: Eq,
C: Eq,
D: Eq,
E: Eq,
F: Eq,
G: Eq,
H: Eq + ?Sized,
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]
A: Eq,
B: Eq,
C: Eq,
D: Eq,
E: Eq,
F: Eq,
G: Eq,
H: Eq,
I: Eq + ?Sized,
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]
A: Eq,
B: Eq,
C: Eq,
D: Eq,
E: Eq,
F: Eq,
G: Eq,
H: Eq,
I: Eq,
J: Eq + ?Sized,
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]
A: Eq,
B: Eq,
C: Eq,
D: Eq,
E: Eq,
F: Eq,
G: Eq,
H: Eq,
I: Eq,
J: Eq,
K: Eq + ?Sized,
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]
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,
impl<H> Eq for BuildHasherDefault<H>[src]
impl<Idx> Eq for Range<Idx> where
Idx: Eq, [src]
Idx: Eq,
impl<Idx> Eq for RangeFrom<Idx> where
Idx: Eq, [src]
Idx: Eq,
impl<Idx> Eq for RangeInclusive<Idx> where
Idx: Eq, [src]
Idx: Eq,
impl<Idx> Eq for RangeTo<Idx> where
Idx: Eq, [src]
Idx: Eq,
impl<Idx> Eq for RangeToInclusive<Idx> where
Idx: Eq, [src]
Idx: Eq,
impl<K, V> Eq for BTreeMap<K, V> where
K: Eq,
V: Eq, [src]
K: Eq,
V: Eq,
impl<K, V, S> Eq for std::collections::HashMap<K, V, S> where
K: Eq + Hash,
V: Eq,
S: BuildHasher, [src]
K: Eq + Hash,
V: Eq,
S: BuildHasher,
impl<P> Eq for Pin<P> where
P: Deref,
<P as Deref>::Target: Eq, [src]
P: Deref,
<P as Deref>::Target: Eq,
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, ...) -> 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, ...) -> 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, ...) -> 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, ...) -> 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, ...) -> 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, ...) -> 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, ...) -> 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, ...) -> 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, ...) -> 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, ...) -> 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, ...) -> 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, ...) -> 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, ...) -> 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, ...) -> 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, ...) -> 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, ...) -> 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, ...) -> 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, ...) -> 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, ...) -> 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, ...) -> 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, ...) -> 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, ...) -> 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, ...) -> 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, ...) -> Ret[src]
impl<T> Eq for Bound<T> where
T: Eq, [src]
T: Eq,
impl<T> Eq for Option<T> where
T: Eq, [src]
T: Eq,
impl<T> Eq for Poll<T> where
T: Eq, [src]
T: Eq,
impl<T> Eq for *const T where
T: ?Sized, [src]
T: ?Sized,
impl<T> Eq for *mut T where
T: ?Sized, [src]
T: ?Sized,
impl<T> Eq for [T] where
T: Eq, [src]
T: Eq,
impl<T> Eq for Box<T> where
T: Eq + ?Sized, [src]
T: Eq + ?Sized,
impl<T> Eq for Cell<T> where
T: Eq + Copy, [src]
T: Eq + Copy,
impl<T> Eq for RefCell<T> where
T: Eq + ?Sized, [src]
T: Eq + ?Sized,
impl<T> Eq for Reverse<T> where
T: Eq, [src]
T: Eq,
impl<T> Eq for BTreeSet<T> where
T: Eq, [src]
T: Eq,
impl<T> Eq for LinkedList<T> where
T: Eq, [src]
T: Eq,
impl<T> Eq for PhantomData<T> where
T: ?Sized, [src]
T: ?Sized,
impl<T> Eq for Discriminant<T>[src]
impl<T> Eq for ManuallyDrop<T> where
T: Eq + ?Sized, [src]
T: Eq + ?Sized,
impl<T> Eq for Wrapping<T> where
T: Eq, [src]
T: Eq,
impl<T> Eq for NonNull<T> where
T: ?Sized, [src]
T: ?Sized,
impl<T> Eq for Rc<T> where
T: Eq + ?Sized, [src]
T: Eq + ?Sized,
impl<T> Eq for Arc<T> where
T: Eq + ?Sized, [src]
T: Eq + ?Sized,
impl<T> Eq for Vec<T> where
T: Eq, [src]
T: Eq,
impl<T, E> Eq for Result<T, E> where
E: Eq,
T: Eq, [src]
E: Eq,
T: Eq,
impl<T, S> Eq for std::collections::HashSet<T, S> where
T: Eq + Hash,
S: BuildHasher, [src]
T: Eq + Hash,
S: BuildHasher,
impl<T: Eq> Eq for TrySendError<T>[src]
impl<T: Eq> Eq for Cursor<T>[src]
impl<T: Eq> Eq for SendError<T>[src]
impl<Y, R> Eq for GeneratorState<Y, R> where
R: Eq,
Y: Eq, [src]
R: Eq,
Y: Eq,
impl<const N: usize, T> Eq for [T; N] where
T: Eq,
[T; N]: LengthAtMost32, [src]
T: Eq,
[T; N]: LengthAtMost32,