Trait frame_support::dispatch::marker::StructuralPartialEq

source ·

pub trait StructuralPartialEq { }

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

Expand description

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.

Trait frame_support::dispatch::marker::StructuralPartialEq

Implementors§

impl StructuralPartialEq for Never

impl StructuralPartialEq for Void

impl StructuralPartialEq for frame_support::pallet_prelude::DispatchError

impl StructuralPartialEq for InvalidTransaction

impl StructuralPartialEq for TransactionSource

impl StructuralPartialEq for TransactionValidityError

impl StructuralPartialEq for UnknownTransaction

impl StructuralPartialEq for ChildInfo

impl StructuralPartialEq for ChildType

impl StructuralPartialEq for StateVersion

impl StructuralPartialEq for ExecuteOverweightError

impl StructuralPartialEq for ProcessMessageError

impl StructuralPartialEq for LookupError

impl StructuralPartialEq for BalanceStatus

impl StructuralPartialEq for DepositConsequence

impl StructuralPartialEq for ExistenceRequirement

impl StructuralPartialEq for Fortitude

impl StructuralPartialEq for Precision

impl StructuralPartialEq for Preservation

impl StructuralPartialEq for Provenance

impl StructuralPartialEq for Restriction

impl StructuralPartialEq for PaymentStatus

impl StructuralPartialEq for DispatchClass

impl StructuralPartialEq for Pays

impl StructuralPartialEq for frame_support::dispatch::fmt::Alignment

impl StructuralPartialEq for TryReserveErrorKind

impl StructuralPartialEq for AsciiChar

impl StructuralPartialEq for core::cmp::Ordering

impl StructuralPartialEq for Which

impl StructuralPartialEq for IpAddr

impl StructuralPartialEq for Ipv6MulticastScope

impl StructuralPartialEq for SocketAddr

impl StructuralPartialEq for FpCategory

impl StructuralPartialEq for IntErrorKind

impl StructuralPartialEq for SearchStep

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

impl StructuralPartialEq for BacktraceStatus

impl StructuralPartialEq for VarError

impl StructuralPartialEq for std::io::SeekFrom

impl StructuralPartialEq for std::io::error::ErrorKind

impl StructuralPartialEq for Shutdown

impl StructuralPartialEq for BacktraceStyle

impl StructuralPartialEq for RecvTimeoutError

impl StructuralPartialEq for TryRecvError

impl StructuralPartialEq for _Unwind_Action

impl StructuralPartialEq for _Unwind_Reason_Code

impl StructuralPartialEq for SecondsFormat

impl StructuralPartialEq for Fixed

impl StructuralPartialEq for Numeric

impl StructuralPartialEq for Pad

impl StructuralPartialEq for ParseErrorKind

impl StructuralPartialEq for Month

impl StructuralPartialEq for RoundingError

impl StructuralPartialEq for Weekday

impl StructuralPartialEq for RuntimeMetadata

impl StructuralPartialEq for RuntimeMetadataDeprecated

impl StructuralPartialEq for StorageEntryModifier

impl StructuralPartialEq for StorageHasher

impl StructuralPartialEq for FromHexError

impl StructuralPartialEq for log::Level

impl StructuralPartialEq for log::LevelFilter

impl StructuralPartialEq for num_format::error_kind::ErrorKind

impl StructuralPartialEq for Grouping

impl StructuralPartialEq for Locale

impl StructuralPartialEq for MetaForm

impl StructuralPartialEq for PortableForm

impl StructuralPartialEq for TypeDefPrimitive

impl StructuralPartialEq for PathError

impl StructuralPartialEq for Category

impl StructuralPartialEq for serde_json::value::Value

impl StructuralPartialEq for ArithmeticError

impl StructuralPartialEq for DeriveError

impl StructuralPartialEq for DeriveJunction

impl StructuralPartialEq for PublicError

impl StructuralPartialEq for SecretStringError

impl StructuralPartialEq for HttpError

impl StructuralPartialEq for HttpRequestStatus

impl StructuralPartialEq for OffchainOverlayedChange