Trait cretonne::prelude::codegen::entity::__core::prelude::v1::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):

• reflexive: a == a;
• symmetric: a == b implies b == a; and
• transitive: a == b and b == c implies a == 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: &Book) -> bool {
        self.isbn == other.isbn
    }
}
impl Eq for Book {}

Implementations on Foreign Types

impl<'a> Eq for Prefix<'a>

impl Eq for StripPrefixError

impl Eq for CStr

impl<'a> Eq for PrefixComponent<'a>

impl Eq for Ipv4Addr

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

impl<'a> Eq for Components<'a>

impl Eq for WaitTimeoutResult

impl Eq for SeekFrom

impl Eq for ErrorKind

impl Eq for SocketAddr

impl Eq for RecvError

impl Eq for IpAddr

impl Eq for OsString

impl Eq for ExitStatus

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

impl Eq for SocketAddrV6

impl Eq for Path

impl Eq for Ipv6Addr

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

impl Eq for VarError

impl Eq for OsStr

impl Eq for RecvTimeoutError

impl Eq for AddrParseError

impl Eq for Permissions

impl Eq for PathBuf

impl Eq for ThreadId

impl Eq for FileType

impl Eq for FromBytesWithNulError

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

impl Eq for CString

impl Eq for Ipv6MulticastScope

impl Eq for Instant

impl Eq for Shutdown

impl Eq for NulError

impl Eq for TryRecvError

impl Eq for SystemTime

impl<'a> Eq for Component<'a>

impl Eq for IntoStringError

impl Eq for Output

impl Eq for SocketAddrV4

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,

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

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

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

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

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

impl Eq for ()

impl Eq for i64

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

impl Eq for u32

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

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

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

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

impl Eq for i8

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

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,

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

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,

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

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

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

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

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

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

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

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

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

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

impl<T> Eq for [T] where     T: Eq,

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

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

impl<'a, A> Eq for &'a A where     A: Eq + ?Sized,

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

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

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

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

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

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

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

impl Eq for bool

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

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

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

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

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

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

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

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

impl<Ret> Eq for fn() -> Ret

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

impl Eq for i128

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

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,

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

impl Eq for u16

impl<Ret> Eq for unsafe fn() -> Ret

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

impl Eq for u64

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,

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

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

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

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

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

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

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

impl Eq for !

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

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

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

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

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

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

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

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

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

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

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

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

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,

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

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

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

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

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

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

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

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

impl Eq for i32

impl Eq for ParseFloatError

impl<Ret, A> Eq for extern "C" fn(A, ...) -> Ret

impl<'a, A> Eq for &'a mut A where     A: Eq + ?Sized,

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

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

impl Eq for str

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

impl Eq for u8

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,

impl Eq for isize

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

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

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

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

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

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

impl Eq for usize

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

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

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

impl Eq for i16

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

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

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

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

impl Eq for char

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

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

impl Eq for u128

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

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

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

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

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

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

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

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,

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

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

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

impl<T> Eq for BTreeSet<T> where     T: Eq,

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

impl<A> Eq for VecDeque<A> where     A: Eq,

impl<T> Eq for Box<T> where     T: Eq + ?Sized,

impl Eq for String

impl<T> Eq for LinkedList<T> where     T: Eq,

impl<T> Eq for Vec<T> where     T: Eq,

impl<T> Eq for Arc<T> where     T: Eq + ?Sized,

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

impl Eq for ParseError

impl<T> Eq for Rc<T> where     T: Eq + ?Sized,

impl<E> Eq for Compat<E> where     E: Eq,

impl Eq for Vendor

impl Eq for OperatingSystem

impl Eq for Environment

impl Eq for Triple

impl Eq for PointerWidth

impl Eq for Endianness

impl Eq for Architecture

impl Eq for ParseError

impl Eq for BinaryFormat

Implementors

• impl Eq for u32x2

• impl Eq for CollectionAllocErr

• impl Eq for m32x4

• impl<T> Eq for RefCell<T> where     T: Eq + ?Sized,

• impl Eq for Utf8Error

• impl Eq for m8x4

• impl Eq for i8x4

• impl<Idx> Eq for RangeFrom<Idx> where     Idx: Eq,

• impl Eq for u16x4

• impl Eq for i8x8

• impl Eq for ParseIntError

• impl<T> Eq for Bound<T> where     T: Eq,

• impl<T, E> Eq for Result<T, E> where     E: Eq,     T: Eq,

• impl Eq for u16x2

• impl<T> Eq for Discriminant<T>

• impl<T> Eq for NonNull<T> where     T: ?Sized,

• impl Eq for Duration

• impl Eq for i16x16

• impl Eq for TypeId

• impl Eq for AllocErr

• impl Eq for NonZeroU8

• impl Eq for m16x4

• impl<Idx> Eq for RangeTo<Idx> where     Idx: Eq,

• impl Eq for InvalidSequence

• impl Eq for u16x32

• impl Eq for m1x32

• impl Eq for i8x2

• impl Eq for i8x32

• impl Eq for m1x8

• impl Eq for u8x64

• impl<Idx> Eq for Range<Idx> where     Idx: Eq,

• impl<T> Eq for PhantomData<T> where     T: ?Sized,

• impl Eq for m1x64

• impl Eq for i32x8

• impl Eq for SearchStep

• impl Eq for m16x16

• impl Eq for u32x16

• impl<'a> Eq for Utf8LossyChunk<'a>

• impl Eq for FpCategory

• impl<Y, R> Eq for GeneratorState<Y, R> where     R: Eq,     Y: Eq,

• impl Eq for CannotReallocInPlace

• impl<Idx> Eq for RangeInclusive<Idx> where     Idx: Eq,

• impl Eq for u32x8

• impl Eq for Ordering

• impl Eq for u16x8

• impl Eq for m16x8

• impl Eq for m8x16

• impl Eq for m64x2

• impl Eq for u8x32

• impl Eq for u8x4

• impl Eq for Error

• impl Eq for UnicodeVersion

• impl Eq for m1x16

• impl Eq for m64x4

• impl Eq for u16x16

• impl Eq for u8x8

• impl<T> Eq for Cell<T> where     T: Copy + Eq,

• impl Eq for i16x2

• impl Eq for i8x16

• impl Eq for Layout

• impl Eq for m32x8

• impl Eq for m16x2

• impl Eq for m8x8

• impl Eq for i32x16

• impl Eq for i8x64

• impl Eq for ParseBoolError

• impl Eq for i16x8

• impl Eq for i16x4

• impl Eq for NonZeroU16

• impl Eq for m8x2

• impl Eq for u8x2

• impl Eq for i32x4

• impl<T> Eq for Reverse<T> where     T: Eq,

• impl Eq for ParseCharError

• impl Eq for i64x8

• impl Eq for m32x2

• impl Eq for DecodeUtf16Error

• impl<T> Eq for Wrapping<T> where     T: Eq,

• impl Eq for i16x32

• impl Eq for LayoutErr

• impl Eq for NonZeroU64

• impl Eq for CpuidResult

• impl Eq for i64x2

• impl Eq for NoneError

• impl Eq for u64x2

• impl<T> Eq for ManuallyDrop<T> where     T: Eq,

• impl Eq for u8x16

• impl Eq for u64x8

• impl Eq for u32x4

• impl Eq for i64x4

• impl<Idx> Eq for RangeToInclusive<Idx> where     Idx: Eq,

• impl Eq for m8x32

• impl Eq for i32x2

• impl Eq for CharTryFromError

• impl Eq for NonZeroUsize

• impl Eq for Pinned

• impl Eq for RangeFull

• impl Eq for NonZeroU128

• impl Eq for NonZeroU32

• impl<T> Eq for Option<T> where     T: Eq,

• impl Eq for u64x4

• impl Eq for StackSlot

• impl Eq for LibCall

• impl Eq for LookupError

• impl Eq for StackBase

• impl Eq for RegClassIndex

• impl Eq for CodegenError

• impl Eq for FuncRef

• impl Eq for SigRef

• impl Eq for ResolvedConstraint

• impl Eq for CallConv

• impl Eq for StackSlotKind

• impl Eq for ValueLoc

• impl Eq for Imm64

• impl Eq for StackBaseMask

• impl Eq for VerifierError

• impl Eq for Loop

• impl Eq for ArgumentPurpose

• impl Eq for TrapCode

• impl Eq for ValueDef

• impl Eq for IntCC

• impl Eq for ExpandedProgramPoint

• impl Eq for ArgumentLoc

• impl Eq for Type

• impl Eq for Ebb

• impl Eq for Offset32

• impl Eq for Value

• impl Eq for InstructionFormat

• impl Eq for FloatCC

• impl Eq for JumpTable

• impl Eq for GlobalValue

• impl Eq for SourceLoc

• impl Eq for AbiParam

• impl Eq for CursorPosition

• impl Eq for ValueTypeSet

• impl Eq for Heap

• impl Eq for AnyEntity

• impl Eq for Signature

• impl Eq for Opcode

• impl Eq for SetError

• impl Eq for Inst

• impl Eq for Uimm32

• impl Eq for ExternalName

• impl Eq for ArgumentExtension

• impl Eq for Ieee32

• impl Eq for MemFlags

• impl Eq for ConstraintKind

• impl Eq for Encoding

• impl Eq for Ieee64

• impl Eq for OptLevel

• impl Eq for ProgramPoint

• impl<T> Eq for PackedOption<T> where     T: ReservedValue + Eq,

• impl Eq for Variable