Trait StructuralPartialEq 

pub trait StructuralPartialEq { }

🔬This is a nightly-only experimental API. (structural_match #31434)

Required trait for constants used in pattern matches.

Constants are only allowed as patterns if (a) their type implements PartialEq, and (b) interpreting the value of the constant as a pattern is equivalent to calling PartialEq. This ensures that constants used as patterns cannot expose implementation details in an unexpected way or cause semver hazards.

This trait ensures point (b). Any type that derives PartialEq automatically implements this trait.

Implementing this trait (which is unstable) is a way for type authors to explicitly allow comparing const values of this type; that operation will recursively compare all fields (including private fields), even if that behavior differs from PartialEq. This can make it semver-breaking to add further private fields to a type.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl StructuralPartialEq for ()

impl StructuralPartialEq for AccessError

impl StructuralPartialEq for AddrParseError

impl StructuralPartialEq for std::mem::Alignment

impl StructuralPartialEq for std::fmt::Alignment

impl StructuralPartialEq for AllocError

impl StructuralPartialEq for AsciiChar

impl StructuralPartialEq for Assume

impl StructuralPartialEq for AtomicOrdering

impl StructuralPartialEq for BacktraceStatus

impl StructuralPartialEq for BacktraceStyle

impl StructuralPartialEq for CStr

impl StructuralPartialEq for CString

impl StructuralPartialEq for CharCase

impl StructuralPartialEq for CharTryFromError

impl StructuralPartialEq for CpuidResult

impl StructuralPartialEq for DebugAsHex

impl StructuralPartialEq for DecodeUtf16Error

impl StructuralPartialEq for Duration

impl StructuralPartialEq for Error

impl StructuralPartialEq for ErrorKind

impl StructuralPartialEq for ExitCode

impl StructuralPartialEq for ExitStatus

impl StructuralPartialEq for ExitStatusError

impl StructuralPartialEq for FieldId

impl StructuralPartialEq for FileType

impl StructuralPartialEq for FormattingOptions

impl StructuralPartialEq for FpCategory

impl StructuralPartialEq for FromBytesUntilNulError

impl StructuralPartialEq for FromBytesWithNulError

impl StructuralPartialEq for FromUtf8Error

impl StructuralPartialEq for FromVecWithNulError

impl StructuralPartialEq for GetDisjointMutError

impl StructuralPartialEq for Instant

impl StructuralPartialEq for IntErrorKind

impl StructuralPartialEq for IntoStringError

impl StructuralPartialEq for InvalidHandleError

Available on Windows only.

impl StructuralPartialEq for IpAddr

impl StructuralPartialEq for Ipv4Addr

impl StructuralPartialEq for Ipv6Addr

impl StructuralPartialEq for Ipv6MulticastScope

impl StructuralPartialEq for Layout

impl StructuralPartialEq for LayoutError

impl StructuralPartialEq for Locality

impl StructuralPartialEq for NormalizeError

impl StructuralPartialEq for NulError

impl StructuralPartialEq for NullHandleError

Available on Windows only.

impl StructuralPartialEq for std::cmp::Ordering

impl StructuralPartialEq for std::sync::atomic::Ordering

impl StructuralPartialEq for Output

impl StructuralPartialEq for ParseBoolError

impl StructuralPartialEq for ParseCharError

impl StructuralPartialEq for ParseFloatError

impl StructuralPartialEq for ParseIntError

impl StructuralPartialEq for Permissions

impl StructuralPartialEq for PhantomPinned

impl StructuralPartialEq for RangeFull

impl StructuralPartialEq for RawWaker

impl StructuralPartialEq for RawWakerVTable

impl StructuralPartialEq for RecvError

impl StructuralPartialEq for RecvTimeoutError

impl StructuralPartialEq for SearchStep

impl StructuralPartialEq for SeekFrom

impl StructuralPartialEq for Shutdown

impl StructuralPartialEq for Sign

impl StructuralPartialEq for SimdAlign

impl StructuralPartialEq for SocketAddr

impl StructuralPartialEq for SocketAddrV4

impl StructuralPartialEq for SocketAddrV6

impl StructuralPartialEq for String

impl StructuralPartialEq for StripPrefixError

impl StructuralPartialEq for SystemTime

impl StructuralPartialEq for ThreadId

impl StructuralPartialEq for TryFromCharError

impl StructuralPartialEq for TryFromFloatSecsError

impl StructuralPartialEq for TryFromIntError

impl StructuralPartialEq for TryRecvError

impl StructuralPartialEq for TryReserveError

impl StructuralPartialEq for TryReserveErrorKind

impl StructuralPartialEq for UCred

Available on Unix only.

impl StructuralPartialEq for UnorderedKeyError

impl StructuralPartialEq for Utf8Error

impl StructuralPartialEq for VarError

impl StructuralPartialEq for VariantId

impl StructuralPartialEq for WaitTimeoutResult

impl StructuralPartialEq for bool

impl StructuralPartialEq for char

impl StructuralPartialEq for i8

impl StructuralPartialEq for i16

impl StructuralPartialEq for i32

impl StructuralPartialEq for i64

impl StructuralPartialEq for i128

impl StructuralPartialEq for isize

impl StructuralPartialEq for str

impl StructuralPartialEq for u8

impl StructuralPartialEq for u16

impl StructuralPartialEq for u32

impl StructuralPartialEq for u64

impl StructuralPartialEq for u128

impl StructuralPartialEq for usize

impl<'a> StructuralPartialEq for Component<'a>

impl<'a> StructuralPartialEq for PhantomContravariantLifetime<'a>

impl<'a> StructuralPartialEq for PhantomCovariantLifetime<'a>

impl<'a> StructuralPartialEq for PhantomInvariantLifetime<'a>

impl<'a> StructuralPartialEq for Prefix<'a>

impl<'a> StructuralPartialEq for Utf8Chunk<'a>

impl<'a> StructuralPartialEq for Utf8Pattern<'a>

impl<B, C> StructuralPartialEq for ControlFlow<B, C>

where B: PartialEq, C: PartialEq,

impl<Idx> StructuralPartialEq for std::ops::Range<Idx>

where Idx: PartialEq,

impl<Idx> StructuralPartialEq for std::range::Range<Idx>

where Idx: PartialEq,

impl<Idx> StructuralPartialEq for std::ops::RangeFrom<Idx>

where Idx: PartialEq,

impl<Idx> StructuralPartialEq for std::range::RangeFrom<Idx>

where Idx: PartialEq,

impl<Idx> StructuralPartialEq for std::ops::RangeInclusive<Idx>

where Idx: PartialEq,

impl<Idx> StructuralPartialEq for std::range::RangeInclusive<Idx>

where Idx: PartialEq,

impl<Idx> StructuralPartialEq for RangeTo<Idx>

where Idx: PartialEq,

impl<Idx> StructuralPartialEq for std::ops::RangeToInclusive<Idx>

where Idx: PartialEq,

impl<Idx> StructuralPartialEq for std::range::RangeToInclusive<Idx>

where Idx: PartialEq,

impl<T, E> StructuralPartialEq for Result<T, E>

where T: PartialEq, E: PartialEq,

impl<T, const N: usize> StructuralPartialEq for [T; N]

impl<T: PartialEq> StructuralPartialEq for SendError<T>

impl<T: PartialEq> StructuralPartialEq for SendTimeoutError<T>

impl<T: PartialEq> StructuralPartialEq for TrySendError<T>

impl<T> StructuralPartialEq for &T

where T: ?Sized,

impl<T> StructuralPartialEq for (T₁, T₂, …, Tₙ)

This trait is implemented for tuples up to twelve items long.

impl<T> StructuralPartialEq for Bound<T>

where T: PartialEq,

impl<T> StructuralPartialEq for Complex<T>

where T: PartialEq,

impl<T> StructuralPartialEq for Cursor<T>

where T: PartialEq,

impl<T> StructuralPartialEq for ManuallyDrop<T>

where T: ?Sized,

impl<T> StructuralPartialEq for MaybeDangling<T>

where T: ?Sized,

impl<T> StructuralPartialEq for NonZero<T>

where T: ZeroablePrimitive + StructuralPartialEq,

impl<T> StructuralPartialEq for Option<T>

impl<T> StructuralPartialEq for PhantomData<T>

where T: ?Sized,

impl<T> StructuralPartialEq for Poll<T>

where T: PartialEq,

impl<T> StructuralPartialEq for Reverse<T>

where T: PartialEq,

impl<T> StructuralPartialEq for Saturating<T>

where T: PartialEq,

impl<T> StructuralPartialEq for SyncView<T>

where T: Sync + StructuralPartialEq + ?Sized,

impl<T> StructuralPartialEq for TraitImpl<T>

where T: PartialEq + ?Sized,

impl<T> StructuralPartialEq for Wrapping<T>

where T: PartialEq,

impl<T> StructuralPartialEq for [T]

impl<Y, R> StructuralPartialEq for CoroutineState<Y, R>

where Y: PartialEq, R: PartialEq,