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Struct polkadot_runtime_parachains::hrmp::pallet::Pallet

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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 hrmp_init_open_channel( origin: OriginFor<T>, recipient: ParaId, proposed_max_capacity: u32, proposed_max_message_size: u32, ) -> DispatchResult

Initiate opening a channel from a parachain to a given recipient with given channel parameters.

  • proposed_max_capacity - specifies how many messages can be in the channel at once.
  • proposed_max_message_size - specifies the maximum size of the messages.

These numbers are a subject to the relay-chain configuration limits.

The channel can be opened only after the recipient confirms it and only on a session change.

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pub fn hrmp_accept_open_channel( origin: OriginFor<T>, sender: ParaId, ) -> DispatchResult

Accept a pending open channel request from the given sender.

The channel will be opened only on the next session boundary.

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pub fn hrmp_close_channel( origin: OriginFor<T>, channel_id: HrmpChannelId, ) -> DispatchResult

Initiate unilateral closing of a channel. The origin must be either the sender or the recipient in the channel being closed.

The closure can only happen on a session change.

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pub fn force_clean_hrmp( origin: OriginFor<T>, para: ParaId, num_inbound: u32, num_outbound: u32, ) -> DispatchResult

This extrinsic triggers the cleanup of all the HRMP storage items that a para may have. Normally this happens once per session, but this allows you to trigger the cleanup immediately for a specific parachain.

Number of inbound and outbound channels for para must be provided as witness data.

Origin must be the ChannelManager.

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pub fn force_process_hrmp_open( origin: OriginFor<T>, channels: u32, ) -> DispatchResult

Force process HRMP open channel requests.

If there are pending HRMP open channel requests, you can use this function to process all of those requests immediately.

Total number of opening channels must be provided as witness data.

Origin must be the ChannelManager.

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pub fn force_process_hrmp_close( origin: OriginFor<T>, channels: u32, ) -> DispatchResult

Force process HRMP close channel requests.

If there are pending HRMP close channel requests, you can use this function to process all of those requests immediately.

Total number of closing channels must be provided as witness data.

Origin must be the ChannelManager.

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pub fn hrmp_cancel_open_request( origin: OriginFor<T>, channel_id: HrmpChannelId, open_requests: u32, ) -> DispatchResult

This cancels a pending open channel request. It can be canceled by either of the sender or the recipient for that request. The origin must be either of those.

The cancellation happens immediately. It is not possible to cancel the request if it is already accepted.

Total number of open requests (i.e. HrmpOpenChannelRequestsList) must be provided as witness data.

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pub fn force_open_hrmp_channel( origin: OriginFor<T>, sender: ParaId, recipient: ParaId, max_capacity: u32, max_message_size: u32, ) -> DispatchResultWithPostInfo

Open a channel from a sender to a recipient ParaId. Although opened by governance, the max_capacity and max_message_size are still subject to the Relay Chain’s configured limits.

Expected use is when one (and only one) of the ParaIds involved in the channel is governed by the system, e.g. a system parachain.

Origin must be the ChannelManager.

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pub fn establish_system_channel( origin: OriginFor<T>, sender: ParaId, recipient: ParaId, ) -> DispatchResultWithPostInfo

Establish an HRMP channel between two system chains. If the channel does not already exist, the transaction fees will be refunded to the caller. The system does not take deposits for channels between system chains, and automatically sets the message number and size limits to the maximum allowed by the network’s configuration.

Arguments:

  • sender: A system chain, ParaId.
  • recipient: A system chain, ParaId.

Any signed origin can call this function, but both inputs MUST be system chains. If the channel does not exist yet, there is no fee.

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pub fn poke_channel_deposits( origin: OriginFor<T>, sender: ParaId, recipient: ParaId, ) -> DispatchResult

Update the deposits held for an HRMP channel to the latest Configuration. Channels with system chains do not require a deposit.

Arguments:

  • sender: A chain, ParaId.
  • recipient: A chain, ParaId.

Any signed origin can call this function.

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pub fn establish_channel_with_system( origin: OriginFor<T>, target_system_chain: ParaId, ) -> DispatchResultWithPostInfo

Establish a bidirectional HRMP channel between a parachain and a system chain.

Arguments:

  • target_system_chain: A system chain, ParaId.

The origin needs to be the parachain origin.

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impl<T: Config> Pallet<T>

Routines and getters related to HRMP.

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pub fn init_open_channel( origin: ParaId, recipient: ParaId, proposed_max_capacity: u32, proposed_max_message_size: u32, ) -> DispatchResult

Initiate opening a channel from a parachain to a given recipient with given channel parameters. If neither chain is part of the system, then a deposit from the Configuration will be required for origin (the sender) upon opening the request and the recipient upon accepting it.

Basically the same as hrmp_init_open_channel but intended for calling directly from other pallets rather than dispatched.

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pub fn accept_open_channel(origin: ParaId, sender: ParaId) -> DispatchResult

Accept a pending open channel request from the given sender.

Basically the same as hrmp_accept_open_channel but intended for calling directly from other pallets rather than dispatched.

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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, <T as Config>::RuntimeOrigin: From<Origin>,

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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> GetStorageVersion for Pallet<T>

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type InCodeStorageVersion = NoStorageVersionSet

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_initialize(_n: BlockNumber) -> Weight

Block initialization hook. This is called at the very beginning of block execution. Read more
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fn on_finalize(_n: BlockNumber)

Block finalization hook. This is called at the very end 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> 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> 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> Freeze for Pallet<T>

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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,

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where T: 'static + ?Sized,

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Gets the TypeId of self. Read more
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Immutably borrows from an owned value. Read more
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where Self: TryInto<T>,

Consume self to return Some equivalent value of Option<T>. Read more
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default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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Checks if this value is equivalent to the given key. Read more
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Compare self to key and return true if they are equal.
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Compare self to key and return true if they are equal.
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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,