pub struct Pallet<T>(/* private fields */);
Expand description

The Pallet struct, the main type that implements traits and standalone functions within the pallet.

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impl<T: Config> Pallet<T>

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pub fn set_validation_data( origin: OriginFor<T>, data: ParachainInherentData ) -> DispatchResultWithPostInfo

Set the current validation data.

This should be invoked exactly once per block. It will panic at the finalization phase if the call was not invoked.

The dispatch origin for this call must be Inherent

As a side effect, this function upgrades the current validation function if the appropriate time has come.

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pub fn sudo_send_upward_message( origin: OriginFor<T>, message: UpwardMessage ) -> DispatchResult

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pub fn authorize_upgrade( origin: OriginFor<T>, code_hash: T::Hash, check_version: bool ) -> DispatchResult

👎Deprecated: To be removed after June 2024. Migrate to frame_system::authorize_upgrade.

Authorize an upgrade to a given code_hash for the runtime. The runtime can be supplied later.

The check_version parameter sets a boolean flag for whether or not the runtime’s spec version and name should be verified on upgrade. Since the authorization only has a hash, it cannot actually perform the verification.

This call requires Root origin.

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pub fn enact_authorized_upgrade( _: OriginFor<T>, code: Vec<u8> ) -> DispatchResultWithPostInfo

👎Deprecated: To be removed after June 2024. Migrate to frame_system::apply_authorized_upgrade.

Provide the preimage (runtime binary) code for an upgrade that has been authorized.

If the authorization required a version check, this call will ensure the spec name remains unchanged and that the spec version has increased.

Note that this function will not apply the new code, but only attempt to schedule the upgrade with the Relay Chain.

All origins are allowed.

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impl<T: Config> Pallet<T>

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pub fn unincluded_segment_size_after(included_hash: T::Hash) -> u32

Get the unincluded segment size after the given hash.

If the unincluded segment doesn’t contain the given hash, this returns the length of the entire unincluded segment.

This is intended to be used for determining how long the unincluded segment would be in runtime APIs related to authoring.

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impl<T: Config> Pallet<T>

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pub fn max_code_size() -> Option<u32>

The maximum code size permitted, in bytes.

Returns None if the relay chain parachain host configuration hasn’t been submitted yet.

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pub fn schedule_code_upgrade(validation_function: Vec<u8>) -> DispatchResult

The implementation of the runtime upgrade functionality for parachains.

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pub fn collect_collation_info(header: &HeaderFor<T>) -> CollationInfo

Returns the [CollationInfo] of the current active block.

The given header is the header of the built block we are collecting the collation info for.

This is expected to be used by the CollectCollationInfo runtime api.

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pub fn set_custom_validation_head_data(head_data: Vec<u8>)

Set a custom head data that should be returned as result of validate_block.

This will overwrite the head data that is returned as result of validate_block while validating a PoV on the relay chain. Normally the head data that is being returned by validate_block is the header of the block that is validated, thus it can be enacted as the new best block. However, for features like forking it can be useful to overwrite the head data with a custom header.

§Attention

This should only be used when you are sure what you are doing as this can brick your Parachain.

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pub fn open_outbound_hrmp_channel_for_benchmarks_or_tests( target_parachain: ParaId )

Open HRMP channel for using it in benchmarks or tests.

The caller assumes that the pallet will accept regular outbound message to the sibling target_parachain after this call. No other assumptions are made.

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pub fn open_custom_outbound_hrmp_channel_for_benchmarks_or_tests( target_parachain: ParaId, channel: AbridgedHrmpChannel )

Open HRMP channel for using it in benchmarks or tests.

The caller assumes that the pallet will accept regular outbound message to the sibling target_parachain after this call. No other assumptions are made.

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pub fn initialize_for_set_code_benchmark(max_code_size: u32)

Prepare/insert relevant data for schedule_code_upgrade for benchmarks.

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impl<T: Config> Pallet<T>

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pub fn send_upward_message( message: UpwardMessage ) -> Result<(u32, XcmHash), MessageSendError>

Puts a message in the PendingUpwardMessages storage item. The message will be later sent in on_finalize. Checks host configuration to see if message is too big. Increases the delivery fee factor if the queue is sufficiently (see ump_constants::THRESHOLD_FACTOR) congested.

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pub fn last_relay_block_number() -> RelayChainBlockNumber

Get the relay chain block number which was used as an anchor for the last block in this chain.

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impl<T: Config> BeforeAllRuntimeMigrations for Pallet<T>

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fn before_all_runtime_migrations() -> Weight

Something that should happen before runtime migrations are executed.
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impl<T> Benchmarking for Pallet<T>
where T: Config + Config,

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fn benchmarks(extra: bool) -> Vec<BenchmarkMetadata>

Get the benchmarks available for this pallet. Generally there is one benchmark per extrinsic, so these are sometimes just called “extrinsics”. Read more
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fn run_benchmark( extrinsic: &[u8], c: &[(BenchmarkParameter, u32)], whitelist: &[TrackedStorageKey], verify: bool, internal_repeats: u32 ) -> Result<Vec<BenchmarkResult>, BenchmarkError>

Run the benchmarks for this pallet.
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impl<T: Config> Callable<T> for Pallet<T>

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impl<T> Clone for Pallet<T>

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fn clone(&self) -> Self

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<T> Debug for Pallet<T>

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fn fmt(&self, fmt: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<T: Config> EnsureForParachain for Pallet<T>

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fn ensure(para_id: ParaId)

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impl<T: Config> FeeTracker for Pallet<T>

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type Id = ()

Type used for assigning different fee factors to different destinations
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fn get_fee_factor(_: Self::Id) -> FixedU128

Returns the evolving exponential fee factor which will be used to calculate the delivery fees.
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fn increase_fee_factor(_: Self::Id, message_size_factor: FixedU128) -> FixedU128

Increases the delivery fee factor by a factor based on message size and records the result. Read more
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fn decrease_fee_factor(_: Self::Id) -> FixedU128

Decreases the delivery fee factor by a constant factor and records the result. Read more
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impl<T: Config> GetChannelInfo for Pallet<T>

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fn get_channel_status(id: ParaId) -> ChannelStatus

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fn get_channel_info(id: ParaId) -> Option<ChannelInfo>

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impl<T: Config> GetStorageVersion for Pallet<T>

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type InCodeStorageVersion = StorageVersion

This type is generated by the pallet macro. Read more
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fn in_code_storage_version() -> Self::InCodeStorageVersion

Returns the in-code storage version as specified in the storage_version attribute, or [NoStorageVersionSet] if the attribute is missing.
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fn on_chain_storage_version() -> StorageVersion

Returns the storage version of the pallet as last set in the actual on-chain storage.
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fn current_storage_version() -> Self::InCodeStorageVersion

👎Deprecated: This method has been renamed to in_code_storage_version and will be removed after March 2024.
DEPRECATED: Use [Self::current_storage_version] instead. Read more
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impl<T: Config> Hooks<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>

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fn on_finalize(_: BlockNumberFor<T>)

Handles actually sending upward messages by moving them from PendingUpwardMessages to UpwardMessages. Decreases the delivery fee factor if after sending messages, the queue total size is less than the threshold (see ump_constants::THRESHOLD_FACTOR). Also does the sending for HRMP messages it takes from OutboundXcmpMessageSource.

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fn on_initialize(_n: BlockNumberFor<T>) -> Weight

Block initialization hook. This is called at the very beginning of block execution. Read more
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fn on_idle(_n: BlockNumber, _remaining_weight: Weight) -> Weight

Hook to consume a block’s idle time. This will run when the block is being finalized (before [Hooks::on_finalize]). Read more
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fn on_poll(_n: BlockNumber, _weight: &mut WeightMeter)

A hook to run logic after inherent application. Read more
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fn on_runtime_upgrade() -> Weight

Hook executed when a code change (aka. a “runtime upgrade”) is detected by the FRAME Executive pallet. Read more
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fn try_state(_n: BlockNumber) -> Result<(), DispatchError>

Execute the sanity checks of this pallet, per block. Read more
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fn pre_upgrade() -> Result<Vec<u8>, DispatchError>

Execute some pre-checks prior to a runtime upgrade. Read more
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fn post_upgrade(_state: Vec<u8>) -> Result<(), DispatchError>

Execute some post-checks after a runtime upgrade. Read more
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fn offchain_worker(_n: BlockNumber)

Implementing this function on a pallet allows you to perform long-running tasks that are dispatched as separate threads, and entirely independent of the main blockchain execution. Read more
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fn integrity_test()

Check the integrity of this pallet’s configuration. Read more
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impl<T: Config> IntegrityTest for Pallet<T>

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fn integrity_test()

See [Hooks::integrity_test].
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impl<T: Config> OffchainWorker<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>

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fn offchain_worker(n: BlockNumberFor<T>)

This function is being called after every block import (when fully synced). Read more
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impl<T: Config> OnFinalize<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>

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fn on_finalize(n: BlockNumberFor<T>)

See [Hooks::on_finalize].
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impl<T: Config> OnGenesis for Pallet<T>

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fn on_genesis()

Something that should happen at genesis.
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impl<T: Config> OnIdle<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>

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fn on_idle(n: BlockNumberFor<T>, remaining_weight: Weight) -> Weight

See [Hooks::on_idle].
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impl<T: Config> OnInitialize<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>

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fn on_initialize(n: BlockNumberFor<T>) -> Weight

See [Hooks::on_initialize].
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impl<T: Config> OnPoll<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>

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fn on_poll(n: BlockNumberFor<T>, weight: &mut WeightMeter)

Code to execute every now and then at the beginning of the block after inherent application. Read more
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impl<T: Config> OnRuntimeUpgrade for Pallet<T>

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fn on_runtime_upgrade() -> Weight

See [Hooks::on_runtime_upgrade].
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fn pre_upgrade() -> Result<Vec<u8>, TryRuntimeError>

See [Hooks::pre_upgrade].
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fn post_upgrade(state: Vec<u8>) -> Result<(), TryRuntimeError>

See [Hooks::post_upgrade].
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fn try_on_runtime_upgrade(checks: bool) -> Result<Weight, DispatchError>

The expected and default behavior of this method is to handle executing pre_upgrade -> on_runtime_upgrade -> post_upgrade hooks for a migration. Read more
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impl<T: Config> PalletInfoAccess for Pallet<T>

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fn index() -> usize

Index of the pallet as configured in the runtime.
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fn name() -> &'static str

Name of the pallet as configured in the runtime.
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fn name_hash() -> [u8; 16]

Two128 hash of name.
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fn module_name() -> &'static str

Name of the Rust module containing the pallet.
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fn crate_version() -> CrateVersion

Version of the crate containing the pallet.
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impl<T: Config> PalletsInfoAccess for Pallet<T>

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fn count() -> usize

The number of pallets’ information that this type represents. Read more
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fn infos() -> Vec<PalletInfoData>

All of the pallets’ information that this type represents.
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impl<T> PartialEq for Pallet<T>

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fn eq(&self, other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<T: Config> ProvideInherent for Pallet<T>

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type Call = Call<T>

The call type of the pallet.
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type Error = MakeFatalError<()>

The error returned by check_inherent.
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const INHERENT_IDENTIFIER: InherentIdentifier = cumulus_primitives_parachain_inherent::INHERENT_IDENTIFIER

The inherent identifier used by this inherent.
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fn create_inherent(data: &InherentData) -> Option<Self::Call>

Create an inherent out of the given InherentData. Read more
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fn is_inherent(call: &Self::Call) -> bool

Return whether the call is an inherent call. Read more
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fn is_inherent_required( _: &InherentData ) -> Result<Option<Self::Error>, Self::Error>

Determines whether this inherent is required in this block. Read more
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fn check_inherent(_: &Self::Call, _: &InherentData) -> Result<(), Self::Error>

Check whether the given inherent is valid. Checking the inherent is optional and can be omitted by using the default implementation. Read more
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impl<T: Config> StorageInfoTrait for Pallet<T>

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fn storage_info() -> Vec<StorageInfo>

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impl<T: Config> TryDecodeEntireStorage for Pallet<T>

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fn try_decode_entire_state() -> Result<usize, Vec<TryDecodeEntireStorageError>>

Decode the entire data under the given storage, returning Ok(bytes_decoded) if success.
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impl<T: Config> TryState<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>

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fn try_state( n: BlockNumberFor<T>, _s: TryStateSelect ) -> Result<(), TryRuntimeError>

Execute the state checks.
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impl<T: Config> UpwardMessageSender for Pallet<T>

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fn send_upward_message( message: UpwardMessage ) -> Result<(u32, XcmHash), MessageSendError>

Send the given UMP message; return the expected number of blocks before the message will be dispatched or an error if the message cannot be sent. return the hash of the message sent
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impl<T: Config> ValidateUnsigned for Pallet<T>

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type Call = Call<T>

The call to validate
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fn validate_unsigned( _source: TransactionSource, call: &Self::Call ) -> TransactionValidity

Return the validity of the call Read more
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fn pre_dispatch(call: &Self::Call) -> Result<(), TransactionValidityError>

Validate the call right before dispatch. Read more
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impl<T: Config> WhitelistedStorageKeys for Pallet<T>

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fn whitelisted_storage_keys() -> Vec<TrackedStorageKey>

Returns a Vec<TrackedStorageKey> indicating the storage keys that should be whitelisted during benchmarking. This means that those keys will be excluded from the benchmarking performance calculation.
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impl<T> Eq for Pallet<T>

Auto Trait Implementations§

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impl<T> RefUnwindSafe for Pallet<T>
where T: RefUnwindSafe,

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impl<T> Send for Pallet<T>
where T: Send,

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impl<T> Sync for Pallet<T>
where T: Sync,

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impl<T> Unpin for Pallet<T>
where T: Unpin,

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impl<T> UnwindSafe for Pallet<T>
where T: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CheckedConversion for T

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fn checked_from<T>(t: T) -> Option<Self>
where Self: TryFrom<T>,

Convert from a value of T into an equivalent instance of Option<Self>. Read more
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fn checked_into<T>(self) -> Option<T>
where Self: TryInto<T>,

Consume self to return Some equivalent value of Option<T>. Read more
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impl<T> Conv for T

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fn conv<T>(self) -> T
where Self: Into<T>,

Converts self into T using Into<T>. Read more
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impl<T> DynClone for T
where T: Clone,

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fn __clone_box(&self, _: Private) -> *mut ()

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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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where Self: Binary,

Causes self to use its Binary implementation when Debug-formatted.
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where Self: Display,

Causes self to use its Display implementation when Debug-formatted.
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where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.
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Causes self to use its LowerHex implementation when Debug-formatted.
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Causes self to use its Octal implementation when Debug-formatted.
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Causes self to use its UpperHex implementation when Debug-formatted.
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Formats each item in a sequence. Read more
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Returns the argument unchanged.

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Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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Calls U::from(self).

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Cast reference.
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Cast reference.
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Cast mutable reference.
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Cast mutable reference.
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Use with care! Same as self.to_subset but without any property checks. Always succeeds.
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Calls .tap_ref() only in debug builds, and is erased in release builds.
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fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Calls .tap_ref_mut() only in debug builds, and is erased in release builds.
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fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Calls .tap_deref() only in debug builds, and is erased in release builds.
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fn tap_deref_mut_dbg<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Calls .tap_deref_mut() only in debug builds, and is erased in release builds.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> TryConv for T

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fn try_conv<T>(self) -> Result<T, Self::Error>
where Self: TryInto<T>,

Attempts to convert self into T using TryInto<T>. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T, U> TryIntoKey<U> for T
where U: TryFromKey<T>,

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type Error = <U as TryFromKey<T>>::Error

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fn try_into_key(self) -> Result<U, <U as TryFromKey<T>>::Error>

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impl<S, T> UncheckedInto<T> for S
where T: UncheckedFrom<S>,

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fn unchecked_into(self) -> T

The counterpart to unchecked_from.
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impl<T, S> UniqueSaturatedInto<T> for S
where T: Bounded, S: TryInto<T>,

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fn unique_saturated_into(self) -> T

Consume self to return an equivalent value of T.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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impl<T> JsonSchemaMaybe for T

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impl<T> MaybeDebug for T
where T: Debug,

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impl<T> MaybeRefUnwindSafe for T
where T: RefUnwindSafe,

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impl<T> MaybeRefUnwindSafe for T
where T: RefUnwindSafe,

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impl<T> Member for T
where T: Send + Sync + Debug + Eq + PartialEq + Clone + 'static,

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impl<T> Scalar for T
where T: 'static + Clone + PartialEq + Debug,