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.

Implementors

impl StructuralPartialEq for AsciiChar

Available on non-crate feature ferrocene_certified only.

impl StructuralPartialEq for core::cmp::Ordering

impl StructuralPartialEq for FromBytesWithNulError

Available on non-crate feature ferrocene_certified only.

impl StructuralPartialEq for core::fmt::Alignment

impl StructuralPartialEq for DebugAsHex

impl StructuralPartialEq for Sign

impl StructuralPartialEq for AtomicOrdering

impl StructuralPartialEq for IpAddr

Available on non-crate feature ferrocene_certified only.

impl StructuralPartialEq for Ipv6MulticastScope

Available on non-crate feature ferrocene_certified only.

impl StructuralPartialEq for SocketAddr

Available on non-crate feature ferrocene_certified only.

impl StructuralPartialEq for FpCategory

impl StructuralPartialEq for IntErrorKind

impl StructuralPartialEq for GetDisjointMutError

impl StructuralPartialEq for SearchStep

Available on non-crate feature ferrocene_certified only.

impl StructuralPartialEq for core::sync::atomic::Ordering

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 CpuidResult

Available on x86 or x86-64 only.

impl StructuralPartialEq for CharTryFromError

Available on non-crate feature ferrocene_certified only.

impl StructuralPartialEq for DecodeUtf16Error

Available on non-crate feature ferrocene_certified only.

impl StructuralPartialEq for ParseCharError

Available on non-crate feature ferrocene_certified only.

impl StructuralPartialEq for TryFromCharError

Available on non-crate feature ferrocene_certified only.

impl StructuralPartialEq for CStr

Available on non-crate feature ferrocene_certified only.

impl StructuralPartialEq for FromBytesUntilNulError

Available on non-crate feature ferrocene_certified only.

impl StructuralPartialEq for Error

impl StructuralPartialEq for FormattingOptions

impl StructuralPartialEq for Assume

Available on non-crate feature ferrocene_certified only.

impl StructuralPartialEq for AddrParseError

Available on non-crate feature ferrocene_certified only.

impl StructuralPartialEq for Ipv4Addr

Available on non-crate feature ferrocene_certified only.

impl StructuralPartialEq for Ipv6Addr

Available on non-crate feature ferrocene_certified only.

impl StructuralPartialEq for SocketAddrV4

Available on non-crate feature ferrocene_certified only.

impl StructuralPartialEq for SocketAddrV6

Available on non-crate feature ferrocene_certified only.

impl StructuralPartialEq for ParseFloatError

Available on non-crate feature ferrocene_certified only.

impl StructuralPartialEq for ParseIntError

impl StructuralPartialEq for TryFromIntError

impl StructuralPartialEq for RangeFull

impl StructuralPartialEq for core::ptr::Alignment

impl StructuralPartialEq for ParseBoolError

impl StructuralPartialEq for Utf8Error

impl StructuralPartialEq for RawWaker

Available on non-crate feature ferrocene_certified only.

impl StructuralPartialEq for RawWakerVTable

Available on non-crate feature ferrocene_certified only.

impl StructuralPartialEq for Duration

impl StructuralPartialEq for TryFromFloatSecsError

impl StructuralPartialEq for PhantomPinned

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

Available on non-crate feature ferrocene_certified only.

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

Available on non-crate feature ferrocene_certified only.

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

Available on non-crate feature ferrocene_certified only.

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

Available on non-crate feature ferrocene_certified only.

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

Available on non-crate feature ferrocene_certified only.

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

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

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

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

impl<Idx> StructuralPartialEq for RangeTo<Idx>

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

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

Available on non-crate feature ferrocene_certified only.

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

Available on non-crate feature ferrocene_certified only.

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

Available on non-crate feature ferrocene_certified only.

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

Available on non-crate feature ferrocene_certified only.

impl<T> StructuralPartialEq for Bound<T>

impl<T> StructuralPartialEq for Option<T>

Available on non-crate feature ferrocene_certified only.

impl<T> StructuralPartialEq for Poll<T>

Available on non-crate feature ferrocene_certified only.

impl<T> StructuralPartialEq for [T]

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

Available on non-crate feature ferrocene_certified only.

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

impl<T> StructuralPartialEq for Reverse<T>

impl<T> StructuralPartialEq for NonZero<T>

where T: ZeroablePrimitive + StructuralPartialEq,

Available on non-crate feature ferrocene_certified only.

impl<T> StructuralPartialEq for Saturating<T>

Available on non-crate feature ferrocene_certified only.

impl<T> StructuralPartialEq for Wrapping<T>

Available on non-crate feature ferrocene_certified only.

impl<T> StructuralPartialEq for Exclusive<T>

where T: Sync + StructuralPartialEq + ?Sized,

Available on non-crate feature ferrocene_certified only.

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

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

impl<T: PointeeSized> StructuralPartialEq for &T

impl<T: PointeeSized> StructuralPartialEq for PhantomData<T>

Available on non-crate feature ferrocene_certified only.

impl<T: ?Sized> StructuralPartialEq for ManuallyDrop<T>

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

Available on non-crate feature ferrocene_certified only.