[][src]Trait std::marker::StructuralPartialEq

#[lang = "structural_peq"]
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 Eq.

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 attribute-based design to this trait.

Implementations on Foreign Types

impl StructuralPartialEq for CpuidResult[src]

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

impl StructuralPartialEq for PrintFmt[src]

impl StructuralPartialEq for CollectionAllocErr

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Implementors

impl StructuralPartialEq for BacktraceStatus[src]

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

impl StructuralPartialEq for TryReserveError[src]

impl StructuralPartialEq for VarError[src]

impl StructuralPartialEq for ErrorKind[src]

impl StructuralPartialEq for SeekFrom[src]

impl StructuralPartialEq for IpAddr[src]

impl StructuralPartialEq for Ipv6MulticastScope[src]

impl StructuralPartialEq for Shutdown[src]

impl StructuralPartialEq for SocketAddr[src]

impl StructuralPartialEq for FpCategory[src]

impl StructuralPartialEq for IntErrorKind[src]

impl StructuralPartialEq for SearchStep[src]

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

impl StructuralPartialEq for RecvTimeoutError[src]

impl StructuralPartialEq for TryRecvError[src]

impl StructuralPartialEq for AllocErr[src]

impl StructuralPartialEq for CannotReallocInPlace[src]

impl StructuralPartialEq for Layout[src]

impl StructuralPartialEq for LayoutErr[src]

impl StructuralPartialEq for TypeId[src]

impl StructuralPartialEq for CharTryFromError[src]

impl StructuralPartialEq for DecodeUtf16Error[src]

impl StructuralPartialEq for ParseCharError[src]

impl StructuralPartialEq for UnicodeVersion[src]

impl StructuralPartialEq for CString[src]

impl StructuralPartialEq for FromBytesWithNulError[src]

impl StructuralPartialEq for IntoStringError[src]

impl StructuralPartialEq for NulError[src]

impl StructuralPartialEq for Error[src]

impl StructuralPartialEq for FileType[src]

impl StructuralPartialEq for Permissions[src]

impl StructuralPartialEq for PhantomPinned[src]

impl StructuralPartialEq for AddrParseError[src]

impl StructuralPartialEq for NonZeroI128[src]

impl StructuralPartialEq for NonZeroI16[src]

impl StructuralPartialEq for NonZeroI32[src]

impl StructuralPartialEq for NonZeroI64[src]

impl StructuralPartialEq for NonZeroI8[src]

impl StructuralPartialEq for NonZeroIsize[src]

impl StructuralPartialEq for NonZeroU128[src]

impl StructuralPartialEq for NonZeroU16[src]

impl StructuralPartialEq for NonZeroU32[src]

impl StructuralPartialEq for NonZeroU64[src]

impl StructuralPartialEq for NonZeroU8[src]

impl StructuralPartialEq for NonZeroUsize[src]

impl StructuralPartialEq for ParseFloatError[src]

impl StructuralPartialEq for ParseIntError[src]

impl StructuralPartialEq for TryFromIntError[src]

impl StructuralPartialEq for RangeFull[src]

impl StructuralPartialEq for NoneError[src]

impl StructuralPartialEq for StripPrefixError[src]

impl StructuralPartialEq for ExitStatus[src]

impl StructuralPartialEq for Output[src]

impl StructuralPartialEq for ParseBoolError[src]

impl StructuralPartialEq for Utf8Error[src]

impl StructuralPartialEq for RecvError[src]

impl StructuralPartialEq for WaitTimeoutResult[src]

impl StructuralPartialEq for RawWaker[src]

impl StructuralPartialEq for RawWakerVTable[src]

impl StructuralPartialEq for AccessError[src]

impl StructuralPartialEq for ThreadId[src]

impl StructuralPartialEq for Duration[src]

impl StructuralPartialEq for Instant[src]

impl StructuralPartialEq for SystemTime[src]

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

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

impl<Idx> StructuralPartialEq for Range<Idx>[src]

impl<Idx> StructuralPartialEq for RangeFrom<Idx>[src]

impl<Idx> StructuralPartialEq for RangeTo<Idx>[src]

impl<Idx> StructuralPartialEq for RangeToInclusive<Idx>[src]

impl<T> StructuralPartialEq for Bound<T>[src]

impl<T> StructuralPartialEq for Option<T>[src]

impl<T> StructuralPartialEq for TrySendError<T>[src]

impl<T> StructuralPartialEq for Poll<T>[src]

impl<T> StructuralPartialEq for Reverse<T>[src]

impl<T> StructuralPartialEq for BTreeSet<T>[src]

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

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

impl<T> StructuralPartialEq for Wrapping<T>[src]

impl<T> StructuralPartialEq for SendError<T>[src]

impl<T, E> StructuralPartialEq for Result<T, E>[src]

impl<Y, R> StructuralPartialEq for GeneratorState<Y, R>[src]

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