Trait StructuralPartialEq

Source

pub trait StructuralPartialEq { }

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

Expand description

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 equialent 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.

Trait StructuralPartialEqCopy item path

Implementors§

impl StructuralPartialEq for TryReserveErrorKind

impl StructuralPartialEq for VarError

impl StructuralPartialEq for devela::_dep::_std::io::SeekFrom

impl StructuralPartialEq for devela::_dep::_std::net::Shutdown

impl StructuralPartialEq for BacktraceStyle

impl StructuralPartialEq for RecvTimeoutError

impl StructuralPartialEq for TryRecvError

impl StructuralPartialEq for CollectionAllocErr

impl StructuralPartialEq for CheckedCastError

impl StructuralPartialEq for PodCastError

impl StructuralPartialEq for devela::_dep::crossterm::event::Event

impl StructuralPartialEq for devela::_dep::crossterm::event::KeyCode

impl StructuralPartialEq for KeyEventKind

impl StructuralPartialEq for MediaKeyCode

impl StructuralPartialEq for ModifierKeyCode

impl StructuralPartialEq for devela::_dep::crossterm::event::MouseButton

impl StructuralPartialEq for MouseEventKind

impl StructuralPartialEq for Attribute

impl StructuralPartialEq for Color

impl StructuralPartialEq for Colored

impl StructuralPartialEq for ClearType

impl StructuralPartialEq for devela::_dep::hashbrown::TryReserveError

impl StructuralPartialEq for Era

impl StructuralPartialEq for devela::_dep::jiff::civil::Weekday

impl StructuralPartialEq for RoundMode

impl StructuralPartialEq for Unit

impl StructuralPartialEq for Meridiem

impl StructuralPartialEq for PiecesOffset

impl StructuralPartialEq for AmbiguousOffset

impl StructuralPartialEq for Dst

impl StructuralPartialEq for ClockSpeed

impl StructuralPartialEq for DistortionKind

impl StructuralPartialEq for EqFilterKind

impl StructuralPartialEq for devela::_dep::kira::effect::filter::FilterMode

impl StructuralPartialEq for Easing

impl StructuralPartialEq for StartTime

impl StructuralPartialEq for WhenToStart

impl StructuralPartialEq for Waveform

impl StructuralPartialEq for EndPosition

impl StructuralPartialEq for PlaybackPosition

impl StructuralPartialEq for PlaybackState

impl StructuralPartialEq for TrackPlaybackState

impl StructuralPartialEq for devela::_dep::log::Level

impl StructuralPartialEq for devela::_dep::log::LevelFilter

impl StructuralPartialEq for ConnectErrorKind

impl StructuralPartialEq for Ignore

impl StructuralPartialEq for PortInfoError

impl StructuralPartialEq for devela::_dep::midir::SendError

impl StructuralPartialEq for AppleGfxApi

impl StructuralPartialEq for WebGLVersion

impl StructuralPartialEq for Backend

impl StructuralPartialEq for BlendFactor

impl StructuralPartialEq for BlendValue

impl StructuralPartialEq for BufferType

impl StructuralPartialEq for BufferUsage

impl StructuralPartialEq for CompareFunc

impl StructuralPartialEq for Comparison

impl StructuralPartialEq for CullFace

impl StructuralPartialEq for CursorIcon

impl StructuralPartialEq for Equation

impl StructuralPartialEq for devela::_dep::miniquad::FilterMode

impl StructuralPartialEq for FrontFaceOrder

impl StructuralPartialEq for devela::_dep::miniquad::KeyCode

impl StructuralPartialEq for MipmapFilterMode

impl StructuralPartialEq for devela::_dep::miniquad::MouseButton

impl StructuralPartialEq for PrimitiveType

impl StructuralPartialEq for RawId

impl StructuralPartialEq for StencilOp

impl StructuralPartialEq for TextureAccess

impl StructuralPartialEq for TextureFormat

impl StructuralPartialEq for TextureKind

impl StructuralPartialEq for TextureWrap

impl StructuralPartialEq for TouchPhase

impl StructuralPartialEq for VertexFormat

impl StructuralPartialEq for VertexStep

impl StructuralPartialEq for IOURING_OP

impl StructuralPartialEq for perf_event_sample_format_t

impl StructuralPartialEq for ElementType

Trait StructuralPartialEq