Trait std::marker::StructuralPartialEq

pub trait StructuralPartialEq { }

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

Required trait for constants used in pattern matches.

Any type that derives PartialEq automatically implements this trait, regardless of whether its type-parameters implement PartialEq.

If a const item contains some type that does not implement this trait, then that type either (1.) does not implement PartialEq (which means the constant will not provide that comparison method, which code generation assumes is available), or (2.) it implements its own version of PartialEq (which we assume does not conform to a structural-equality comparison).

In either of the two scenarios above, we reject usage of such a constant in a pattern match.

See also the structural match RFC, and issue 63438 which motivated migrating from an attribute-based design to this trait.

Implementors

impl StructuralPartialEq for AsciiChar

impl StructuralPartialEq for BacktraceStatus

impl StructuralPartialEq for std::cmp::Ordering

impl StructuralPartialEq for TryReserveErrorKind

impl StructuralPartialEq for VarError

impl StructuralPartialEq for std::fmt::Alignment

impl StructuralPartialEq for ErrorKind

impl StructuralPartialEq for SeekFrom

impl StructuralPartialEq for IpAddr

impl StructuralPartialEq for Ipv6MulticastScope

impl StructuralPartialEq for Shutdown

impl StructuralPartialEq for SocketAddr

impl StructuralPartialEq for FpCategory

impl StructuralPartialEq for IntErrorKind

impl StructuralPartialEq for BacktraceStyle

impl StructuralPartialEq for SearchStep

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

impl StructuralPartialEq for RecvTimeoutError

impl StructuralPartialEq for TryRecvError

impl StructuralPartialEq for DwarfFileType

impl StructuralPartialEq for Format

impl StructuralPartialEq for SectionId

impl StructuralPartialEq for Vendor

impl StructuralPartialEq for RunTimeEndian

impl StructuralPartialEq for AbbreviationsCacheStrategy

impl StructuralPartialEq for Pointer

impl StructuralPartialEq for gimli::read::Error

impl StructuralPartialEq for ColumnType

impl StructuralPartialEq for Value

impl StructuralPartialEq for ValueType

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 ()

impl StructuralPartialEq for usize

impl StructuralPartialEq for AllocError

impl StructuralPartialEq for Layout

impl StructuralPartialEq for LayoutError

impl StructuralPartialEq for CharTryFromError

impl StructuralPartialEq for DecodeUtf16Error

impl StructuralPartialEq for ParseCharError

impl StructuralPartialEq for TryFromCharError

impl StructuralPartialEq for UnorderedKeyError

impl StructuralPartialEq for TryReserveError

impl StructuralPartialEq for FromBytesUntilNulError

impl StructuralPartialEq for FromBytesWithNulError

impl StructuralPartialEq for FromVecWithNulError

impl StructuralPartialEq for IntoStringError

impl StructuralPartialEq for NulError

impl StructuralPartialEq for CString

impl StructuralPartialEq for std::fmt::Error

impl StructuralPartialEq for FileType

impl StructuralPartialEq for Permissions

impl StructuralPartialEq for Assume

impl StructuralPartialEq for AddrParseError

impl StructuralPartialEq for Ipv4Addr

impl StructuralPartialEq for Ipv6Addr

impl StructuralPartialEq for SocketAddrV4

impl StructuralPartialEq for SocketAddrV6

impl StructuralPartialEq for ParseFloatError

impl StructuralPartialEq for ParseIntError

impl StructuralPartialEq for TryFromIntError

impl StructuralPartialEq for RangeFull

impl StructuralPartialEq for UCred

Available on Unix only.

impl StructuralPartialEq for InvalidHandleError

Available on Windows only.

impl StructuralPartialEq for NullHandleError

Available on Windows only.

impl StructuralPartialEq for StripPrefixError

impl StructuralPartialEq for ExitStatus

impl StructuralPartialEq for ExitStatusError

impl StructuralPartialEq for Output

impl StructuralPartialEq for std::ptr::Alignment

impl StructuralPartialEq for ParseBoolError

impl StructuralPartialEq for Utf8Error

impl StructuralPartialEq for FromUtf8Error

impl StructuralPartialEq for String

impl StructuralPartialEq for RecvError

impl StructuralPartialEq for WaitTimeoutResult

impl StructuralPartialEq for RawWaker

impl StructuralPartialEq for RawWakerVTable

impl StructuralPartialEq for AccessError

impl StructuralPartialEq for ThreadId

impl StructuralPartialEq for Duration

impl StructuralPartialEq for Instant

impl StructuralPartialEq for SystemTime

impl StructuralPartialEq for TryFromFloatSecsError

impl StructuralPartialEq for DebugTypeSignature

impl StructuralPartialEq for DwoId

impl StructuralPartialEq for Encoding

impl StructuralPartialEq for LineEncoding

impl StructuralPartialEq for Register

impl StructuralPartialEq for DwAccess

impl StructuralPartialEq for DwAddr

impl StructuralPartialEq for DwAt

impl StructuralPartialEq for DwAte

impl StructuralPartialEq for DwCc

impl StructuralPartialEq for DwCfa

impl StructuralPartialEq for DwChildren

impl StructuralPartialEq for DwDefaulted

impl StructuralPartialEq for DwDs

impl StructuralPartialEq for DwDsc

impl StructuralPartialEq for DwEhPe

impl StructuralPartialEq for DwEnd

impl StructuralPartialEq for DwForm

impl StructuralPartialEq for DwId

impl StructuralPartialEq for DwIdx

impl StructuralPartialEq for DwInl

impl StructuralPartialEq for DwLang

impl StructuralPartialEq for DwLle

impl StructuralPartialEq for DwLnct

impl StructuralPartialEq for DwLne

impl StructuralPartialEq for DwLns

impl StructuralPartialEq for DwMacro

impl StructuralPartialEq for DwOp

impl StructuralPartialEq for DwOrd

impl StructuralPartialEq for DwRle

impl StructuralPartialEq for DwSect

impl StructuralPartialEq for DwSectV2

impl StructuralPartialEq for DwTag

impl StructuralPartialEq for DwUt

impl StructuralPartialEq for DwVirtuality

impl StructuralPartialEq for DwVis

impl StructuralPartialEq for BigEndian

impl StructuralPartialEq for LittleEndian

impl StructuralPartialEq for Abbreviation

impl StructuralPartialEq for AttributeSpecification

impl StructuralPartialEq for ArangeEntry

impl StructuralPartialEq for Augmentation

impl StructuralPartialEq for BaseAddresses

impl StructuralPartialEq for SectionBaseAddresses

impl StructuralPartialEq for UnitIndexSection

impl StructuralPartialEq for FileEntryFormat

impl StructuralPartialEq for LineRow

impl StructuralPartialEq for ReaderOffsetId

impl StructuralPartialEq for gimli::read::rnglists::Range

impl StructuralPartialEq for StoreOnHeap

impl StructuralPartialEq for PhantomPinned

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

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

impl<'a> StructuralPartialEq for std::panic::Location<'a>

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

impl<'bases, Section, R> StructuralPartialEq for CieOrFde<'bases, Section, R>

where R: Reader, Section: UnwindSection<R>,

impl<'bases, Section, R> StructuralPartialEq for PartialFrameDescriptionEntry<'bases, Section, R>

where R: Reader, Section: UnwindSection<R>,

impl<'input, Endian> StructuralPartialEq for EndianSlice<'input, Endian>

where Endian: Endianity,

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

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

impl<Idx> StructuralPartialEq for RangeFrom<Idx>

impl<Idx> StructuralPartialEq for RangeInclusive<Idx>

impl<Idx> StructuralPartialEq for RangeTo<Idx>

impl<Idx> StructuralPartialEq for RangeToInclusive<Idx>

impl<Offset> StructuralPartialEq for UnitType<Offset>

where Offset: ReaderOffset,

impl<R> StructuralPartialEq for CallFrameInstruction<R>

where R: Reader,

impl<R> StructuralPartialEq for CfaRule<R>

where R: Reader,

impl<R> StructuralPartialEq for RegisterRule<R>

where R: Reader,

impl<R> StructuralPartialEq for EvaluationResult<R>

where R: Reader,

impl<R> StructuralPartialEq for DebugFrame<R>

where R: Reader,

impl<R> StructuralPartialEq for EhFrame<R>

where R: Reader,

impl<R> StructuralPartialEq for EhFrameHdr<R>

where R: Reader,

impl<R> StructuralPartialEq for LocationListEntry<R>

where R: Reader,

impl<R> StructuralPartialEq for Expression<R>

where R: Reader,

impl<R> StructuralPartialEq for Attribute<R>

where R: Reader,

impl<R, A> StructuralPartialEq for UnwindContext<R, A>

where R: Reader, A: UnwindContextStorage<R>,

impl<R, Offset> StructuralPartialEq for LineInstruction<R, Offset>

where R: Reader<Offset = Offset>, Offset: ReaderOffset,

impl<R, Offset> StructuralPartialEq for gimli::read::op::Location<R, Offset>

where R: Reader<Offset = Offset>, Offset: ReaderOffset,

impl<R, Offset> StructuralPartialEq for Operation<R, Offset>

where R: Reader<Offset = Offset>, Offset: ReaderOffset,

impl<R, Offset> StructuralPartialEq for AttributeValue<R, Offset>

where R: Reader<Offset = Offset>, Offset: ReaderOffset,

impl<R, Offset> StructuralPartialEq for ArangeHeader<R, Offset>

where R: Reader<Offset = Offset>, Offset: ReaderOffset,

impl<R, Offset> StructuralPartialEq for CommonInformationEntry<R, Offset>

where R: Reader<Offset = Offset>, Offset: ReaderOffset,

impl<R, Offset> StructuralPartialEq for FrameDescriptionEntry<R, Offset>

where R: Reader<Offset = Offset>, Offset: ReaderOffset,

impl<R, Offset> StructuralPartialEq for CompleteLineProgram<R, Offset>

where R: Reader<Offset = Offset>, Offset: ReaderOffset,

impl<R, Offset> StructuralPartialEq for FileEntry<R, Offset>

where R: Reader<Offset = Offset>, Offset: ReaderOffset,

impl<R, Offset> StructuralPartialEq for IncompleteLineProgram<R, Offset>

where R: Reader<Offset = Offset>, Offset: ReaderOffset,

impl<R, Offset> StructuralPartialEq for LineProgramHeader<R, Offset>

where R: Reader<Offset = Offset>, Offset: ReaderOffset,

impl<R, Offset> StructuralPartialEq for Piece<R, Offset>

where R: Reader<Offset = Offset>, Offset: ReaderOffset,

impl<R, Offset> StructuralPartialEq for UnitHeader<R, Offset>

where R: Reader<Offset = Offset>, Offset: ReaderOffset,

impl<R, S> StructuralPartialEq for UnwindTableRow<R, S>

where R: Reader, S: UnwindContextStorage<R>,

impl<T> StructuralPartialEq for Bound<T>

impl<T> StructuralPartialEq for Option<T>

impl<T> StructuralPartialEq for TrySendError<T>

impl<T> StructuralPartialEq for Poll<T>

impl<T> StructuralPartialEq for UnitSectionOffset<T>

impl<T> StructuralPartialEq for DieReference<T>

impl<T> StructuralPartialEq for &T

where T: ?Sized,

impl<T> StructuralPartialEq for [T]

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

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

impl<T> StructuralPartialEq for Reverse<T>

impl<T> StructuralPartialEq for Cursor<T>

impl<T> StructuralPartialEq for ManuallyDrop<T>

where T: ?Sized,

impl<T> StructuralPartialEq for NonZero<T>

where T: ZeroablePrimitive + StructuralPartialEq,

impl<T> StructuralPartialEq for Saturating<T>

impl<T> StructuralPartialEq for Wrapping<T>

impl<T> StructuralPartialEq for SendError<T>

impl<T> StructuralPartialEq for DebugAbbrevOffset<T>

impl<T> StructuralPartialEq for DebugAddrBase<T>

impl<T> StructuralPartialEq for DebugAddrIndex<T>

impl<T> StructuralPartialEq for DebugArangesOffset<T>

impl<T> StructuralPartialEq for DebugFrameOffset<T>

impl<T> StructuralPartialEq for DebugInfoOffset<T>

impl<T> StructuralPartialEq for DebugLineOffset<T>

impl<T> StructuralPartialEq for DebugLineStrOffset<T>

impl<T> StructuralPartialEq for DebugLocListsBase<T>

impl<T> StructuralPartialEq for DebugLocListsIndex<T>

impl<T> StructuralPartialEq for DebugMacinfoOffset<T>

impl<T> StructuralPartialEq for DebugMacroOffset<T>

impl<T> StructuralPartialEq for DebugRngListsBase<T>

impl<T> StructuralPartialEq for DebugRngListsIndex<T>

impl<T> StructuralPartialEq for DebugStrOffset<T>

impl<T> StructuralPartialEq for DebugStrOffsetsBase<T>

impl<T> StructuralPartialEq for DebugStrOffsetsIndex<T>

impl<T> StructuralPartialEq for DebugTypesOffset<T>

impl<T> StructuralPartialEq for EhFrameOffset<T>

impl<T> StructuralPartialEq for LocationListsOffset<T>

impl<T> StructuralPartialEq for RangeListsOffset<T>

impl<T> StructuralPartialEq for RawRangeListsOffset<T>

impl<T> StructuralPartialEq for UnitOffset<T>

impl<T> StructuralPartialEq for PhantomData<T>

where T: ?Sized,

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

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

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