Trait core::marker::StructuralPartialEq

pub trait StructuralPartialEq { }

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

模式匹配中使用的常量的必需 trait。

不管其类型参数是否实现了 Eq，任何派生 PartialEq 的类型都会自动实现这个 trait。

如果 const 项包含某种不实现此 trait 的类型，则该类型要么 (1.) 不实现 PartialEq (这意味着常量将不提供该比较方法 (代码生成假定可用) )，要么 (2.) 自身实现 itsPartialEq 的版本 (我们认为不符合结构相等性比较)。

在以上两种情况中的任何一种情况下，我们都拒绝在模式匹配中使用此类常量。

另请参见 结构匹配 RFC 和 issue 63438，它们促使从基于属性的设计迁移到此 trait。

Implementors

impl StructuralPartialEq for AsciiChar

impl StructuralPartialEq for core::cmp::Ordering

impl StructuralPartialEq for core::fmt::Alignment

impl StructuralPartialEq for IpAddr

impl StructuralPartialEq for Ipv6MulticastScope

impl StructuralPartialEq for SocketAddr

impl StructuralPartialEq for FpCategory

impl StructuralPartialEq for IntErrorKind

impl StructuralPartialEq for Which

impl StructuralPartialEq for SearchStep

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

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

impl StructuralPartialEq for DecodeUtf16Error

impl StructuralPartialEq for ParseCharError

impl StructuralPartialEq for TryFromCharError

impl StructuralPartialEq for FromBytesUntilNulError

impl StructuralPartialEq for FromBytesWithNulError

impl StructuralPartialEq for Error

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 NonZeroI8

impl StructuralPartialEq for NonZeroI16

impl StructuralPartialEq for NonZeroI32

impl StructuralPartialEq for NonZeroI64

impl StructuralPartialEq for NonZeroI128

impl StructuralPartialEq for NonZeroIsize

impl StructuralPartialEq for NonZeroU8

impl StructuralPartialEq for NonZeroU16

impl StructuralPartialEq for NonZeroU32

impl StructuralPartialEq for NonZeroU64

impl StructuralPartialEq for NonZeroU128

impl StructuralPartialEq for NonZeroUsize

impl StructuralPartialEq for ParseFloatError

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

impl StructuralPartialEq for RawWakerVTable

impl StructuralPartialEq for Duration

impl StructuralPartialEq for TryFromFloatSecsError

impl StructuralPartialEq for PhantomPinned

impl<'a> StructuralPartialEq for Location<'a>

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

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

impl<Idx> StructuralPartialEq for 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<T> StructuralPartialEq for Bound<T>

impl<T> StructuralPartialEq for Option<T>

impl<T> StructuralPartialEq for Poll<T>

impl<T> StructuralPartialEq for Reverse<T>

impl<T> StructuralPartialEq for Saturating<T>

impl<T> StructuralPartialEq for Wrapping<T>

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

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

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

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