Trait scale_info::prelude::marker::StructuralPartialEq[−][src]

#[lang = "structural_peq"]pub trait StructuralPartialEq { }

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

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 AddrParseError`[src]

`impl StructuralPartialEq for ErrorKind`[src]

`impl StructuralPartialEq for ExitStatus`[src]

`impl StructuralPartialEq for StripPrefixError`[src]

`impl StructuralPartialEq for Shutdown`[src]

`impl StructuralPartialEq for RecvTimeoutError`[src]

`impl StructuralPartialEq for FromBytesWithNulError`[src]

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

`impl StructuralPartialEq for Instant`[src]

`impl StructuralPartialEq for UCred`[src]

`impl StructuralPartialEq for ThreadId`[src]

`impl StructuralPartialEq for BacktraceStatus`[src]

`impl StructuralPartialEq for FileType`[src]

`impl StructuralPartialEq for FromVecWithNulError`[src]

`impl StructuralPartialEq for Ipv6MulticastScope`[src]

`impl StructuralPartialEq for SeekFrom`[src]

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

`impl StructuralPartialEq for NulError`[src]

`impl StructuralPartialEq for VarError`[src]

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

`impl StructuralPartialEq for IpAddr`[src]

`impl StructuralPartialEq for TryRecvError`[src]

`impl StructuralPartialEq for CString`[src]

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

`impl StructuralPartialEq for SocketAddr`[src]

`impl StructuralPartialEq for AccessError`[src]

`impl StructuralPartialEq for RecvError`[src]

`impl StructuralPartialEq for SystemTime`[src]

`impl<T> StructuralPartialEq for Cursor<T>`[src]

`impl StructuralPartialEq for IntoStringError`[src]

`impl StructuralPartialEq for WaitTimeoutResult`[src]

`impl StructuralPartialEq for Permissions`[src]

`impl StructuralPartialEq for Output`[src]

`impl StructuralPartialEq for SearchStep`[src]

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

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

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

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

`impl StructuralPartialEq for Duration`[src]

`impl<'a> StructuralPartialEq for Location<'a>`[src]

`impl<Idx> StructuralPartialEq for RangeInclusive<Idx>`[src]

`impl StructuralPartialEq for LayoutError`[src]

`impl StructuralPartialEq for ParseCharError`[src]

`impl StructuralPartialEq for AllocError`[src]

`impl StructuralPartialEq for CharTryFromError`[src]

`impl StructuralPartialEq for Layout`[src]

`impl StructuralPartialEq for RangeFull`[src]

`impl StructuralPartialEq for ParseBoolError`[src]

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

`impl<B, C> StructuralPartialEq for ControlFlow<B, C>`[src]

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

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

`impl StructuralPartialEq for RawWaker`[src]

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

`impl StructuralPartialEq for NoneError`[src]

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

`impl StructuralPartialEq for Ordering`[src]

`impl StructuralPartialEq for DecodeUtf16Error`[src]

`impl StructuralPartialEq for Utf8Error`[src]

`impl StructuralPartialEq for CpuidResult`[src]

`impl StructuralPartialEq for RawWakerVTable`[src]

`impl StructuralPartialEq for _Unwind_Action`

`impl StructuralPartialEq for _Unwind_Reason_Code`

`impl StructuralPartialEq for Error`[src]

`impl StructuralPartialEq for OptionBool`[src]

`impl<T> StructuralPartialEq for Compact<T>`[src]

`impl<T> StructuralPartialEq for CapacityError<T>`[src]

`impl StructuralPartialEq for Error`

`impl StructuralPartialEq for Error`[src]

`impl<'a> StructuralPartialEq for Unexpected<'a>`[src]

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Implementors

`impl StructuralPartialEq for PathError`[src]

`impl StructuralPartialEq for TypeDefPrimitive`[src]

`impl StructuralPartialEq for MetaForm`[src]

`impl StructuralPartialEq for PortableForm`[src]

`impl StructuralPartialEq for scale_info::prelude::cmp::Ordering`1.0.0[src]

`impl StructuralPartialEq for TryReserveError`[src]

`impl StructuralPartialEq for FpCategory`1.0.0[src]

`impl StructuralPartialEq for IntErrorKind`[src]

`impl StructuralPartialEq for TypeId`1.0.0[src]

`impl StructuralPartialEq for scale_info::prelude::fmt::Error`1.0.0[src]

`impl StructuralPartialEq for PhantomPinned`1.33.0[src]

`impl StructuralPartialEq for NonZeroI8`1.34.0[src]

`impl StructuralPartialEq for NonZeroI16`1.34.0[src]

`impl StructuralPartialEq for NonZeroI32`1.34.0[src]

`impl StructuralPartialEq for NonZeroI64`1.34.0[src]

`impl StructuralPartialEq for NonZeroI128`1.34.0[src]

`impl StructuralPartialEq for NonZeroIsize`1.34.0[src]

`impl StructuralPartialEq for NonZeroU8`1.28.0[src]

`impl StructuralPartialEq for NonZeroU16`1.28.0[src]

`impl StructuralPartialEq for NonZeroU32`1.28.0[src]

`impl StructuralPartialEq for NonZeroU64`1.28.0[src]

`impl StructuralPartialEq for NonZeroU128`1.28.0[src]

`impl StructuralPartialEq for NonZeroUsize`1.28.0[src]

`impl StructuralPartialEq for ParseFloatError`1.0.0[src]

`impl StructuralPartialEq for ParseIntError`1.0.0[src]

`impl StructuralPartialEq for TryFromIntError`1.34.0[src]

`impl StructuralPartialEq for FromUtf8Error`1.0.0[src]

`impl StructuralPartialEq for PortableRegistry`[src]

`impl StructuralPartialEq for Registry`[src]

`impl<'a, T> StructuralPartialEq for Symbol<'a, T>`[src]

`impl<T> StructuralPartialEq for Bound<T>`1.17.0[src]

`impl<T> StructuralPartialEq for Interner<T>`[src]

`impl<T> StructuralPartialEq for UntrackedSymbol<T>`[src]

`impl<T> StructuralPartialEq for Reverse<T>`1.19.0[src]

`impl<T> StructuralPartialEq for BTreeSet<T>`1.0.0[src]

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

`impl<T> StructuralPartialEq for ManuallyDrop<T> where T: ?Sized,` 1.20.0[src]

`impl<T> StructuralPartialEq for Wrapping<T>`1.0.0[src]

`impl<T: Form> StructuralPartialEq for TypeDef<T>`[src]

`impl<T: Form> StructuralPartialEq for Field<T>`[src]

`impl<T: Form> StructuralPartialEq for Path<T>`[src]

`impl<T: Form> StructuralPartialEq for Type<T>`[src]

`impl<T: Form> StructuralPartialEq for TypeDefArray<T>`[src]

`impl<T: Form> StructuralPartialEq for TypeDefCompact<T>`[src]

`impl<T: Form> StructuralPartialEq for TypeDefComposite<T>`[src]

`impl<T: Form> StructuralPartialEq for TypeDefPhantom<T>`[src]

`impl<T: Form> StructuralPartialEq for TypeDefSequence<T>`[src]

`impl<T: Form> StructuralPartialEq for TypeDefTuple<T>`[src]

`impl<T: Form> StructuralPartialEq for TypeDefVariant<T>`[src]

`impl<T: Form> StructuralPartialEq for Variant<T>`[src]

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