[][src]Trait core::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.

Implementors

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

impl StructuralPartialEq for FpCategory[src]

impl StructuralPartialEq for IntErrorKind[src]

impl StructuralPartialEq for SearchStep[src]

impl StructuralPartialEq for core::sync::atomic::Ordering[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 CpuidResult[src]

impl StructuralPartialEq for CharTryFromError[src]

impl StructuralPartialEq for DecodeUtf16Error[src]

impl StructuralPartialEq for ParseCharError[src]

impl StructuralPartialEq for UnicodeVersion[src]

impl StructuralPartialEq for Error[src]

impl StructuralPartialEq for PhantomPinned[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 ParseBoolError[src]

impl StructuralPartialEq for Utf8Error[src]

impl StructuralPartialEq for RawWaker[src]

impl StructuralPartialEq for RawWakerVTable[src]

impl StructuralPartialEq for Duration[src]

impl<'a> StructuralPartialEq for Utf8LossyChunk<'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 Poll<T>[src]

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

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

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

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

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

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

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