Struct serai_dex_pallet::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 on_new_session(network: NetworkId)

A hook to be called whenever a network’s session is rotated.

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impl<T: Config> Pallet<T>

Pallet’s callable functions.

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pub fn add_liquidity( origin: OriginFor<T>, coin: ExternalCoin, coin_desired: SubstrateAmount, sri_desired: SubstrateAmount, coin_min: SubstrateAmount, sri_min: SubstrateAmount, mint_to: T::AccountId, ) -> DispatchResult

Provide liquidity into the pool of coin1 and coin2. NOTE: an optimal amount of coin1 and coin2 will be calculated and might be different than the provided amount1_desired/amount2_desired thus you should provide the min amount you’re happy to provide. Params amount1_min/amount2_min represent that. mint_to will be sent the liquidity tokens that represent this share of the pool.

Once liquidity is added, someone may successfully call Pallet::swap_exact_tokens_for_tokens successfully.

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pub fn remove_liquidity( origin: OriginFor<T>, coin: ExternalCoin, lp_token_burn: SubstrateAmount, coin_min_receive: SubstrateAmount, sri_min_receive: SubstrateAmount, withdraw_to: T::AccountId, ) -> DispatchResult

Allows you to remove liquidity by providing the lp_token_burn tokens that will be burned in the process. With the usage of amount1_min_receive/amount2_min_receive it’s possible to control the min amount of returned tokens you’re happy with.

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pub fn swap_exact_tokens_for_tokens( origin: OriginFor<T>, path: BoundedVec<Coin, T::MaxSwapPathLength>, amount_in: SubstrateAmount, amount_out_min: SubstrateAmount, send_to: T::AccountId, ) -> DispatchResult

Swap the exact amount of coin1 into coin2. amount_out_min param allows you to specify the min amount of the coin2 you’re happy to receive.

DexApi::quote_price_exact_tokens_for_tokens runtime call can be called for a quote.

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pub fn swap_tokens_for_exact_tokens( origin: OriginFor<T>, path: BoundedVec<Coin, T::MaxSwapPathLength>, amount_out: SubstrateAmount, amount_in_max: SubstrateAmount, send_to: T::AccountId, ) -> DispatchResult

Swap any amount of coin1 to get the exact amount of coin2. amount_in_max param allows to specify the max amount of the coin1 you’re happy to provide.

DexApi::quote_price_tokens_for_exact_tokens runtime call can be called for a quote.

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impl<T: Config> Pallet<T>

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pub fn do_swap_exact_tokens_for_tokens( sender: T::AccountId, path: BoundedVec<Coin, T::MaxSwapPathLength>, amount_in: SubstrateAmount, amount_out_min: Option<SubstrateAmount>, send_to: T::AccountId, ) -> Result<SubstrateAmount, DispatchError>

Swap exactly amount_in of coin path[0] for coin path[1]. If an amount_out_min is specified, it will return an error if it is unable to acquire the amount desired.

Withdraws the path[0] coin from sender, deposits the path[1] coin to send_to.

If successful, returns the amount of path[1] acquired for the amount_in.

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pub fn do_swap_tokens_for_exact_tokens( sender: T::AccountId, path: BoundedVec<Coin, T::MaxSwapPathLength>, amount_out: SubstrateAmount, amount_in_max: Option<SubstrateAmount>, send_to: T::AccountId, ) -> Result<SubstrateAmount, DispatchError>

Take the path[0] coin and swap some amount for amount_out of the path[1]. If an amount_in_max is specified, it will return an error if acquiring amount_out would be too costly.

Withdraws path[0] coin from sender, deposits the path[1] coin to send_to,

If successful returns the amount of the path[0] taken to provide path[1].

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pub fn get_pool_account(pool_id: PoolId) -> T::AccountId

The account ID of the pool.

This actually does computation. If you need to keep using it, then make sure you cache the value and only call this once.

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pub fn get_pool_id(coin1: Coin, coin2: Coin) -> Result<PoolId, Error<T>>

Returns a pool id constructed from 2 coins. We expect deterministic order, so (coin1, coin2) or (coin2, coin1) returns the same result. Coins have to be different and one of them should be Coin::Serai.

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pub fn get_reserves( coin1: &Coin, coin2: &Coin, ) -> Result<(SubstrateAmount, SubstrateAmount), Error<T>>

Returns the balance of each coin in the pool. The tuple result is in the order requested (not necessarily the same as pool order).

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pub fn quote_price_exact_tokens_for_tokens( coin1: Coin, coin2: Coin, amount: SubstrateAmount, include_fee: bool, ) -> Option<SubstrateAmount>

Used by the RPC service to provide current prices.

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pub fn quote_price_tokens_for_exact_tokens( coin1: Coin, coin2: Coin, amount: SubstrateAmount, include_fee: bool, ) -> Option<SubstrateAmount>

Used by the RPC service to provide current prices.

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pub fn quote( amount: SubstrateAmount, reserve1: SubstrateAmount, reserve2: SubstrateAmount, ) -> Result<SubstrateAmount, Error<T>>

Calculates the optimal amount from the reserves.

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pub fn get_amount_out( amount_in: SubstrateAmount, reserve_in: SubstrateAmount, reserve_out: SubstrateAmount, ) -> Result<SubstrateAmount, Error<T>>

Calculates amount out.

Given an input amount of an coin and pair reserves, returns the maximum output amount of the other coin.

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pub fn get_amount_in( amount_out: SubstrateAmount, reserve_in: SubstrateAmount, reserve_out: SubstrateAmount, ) -> Result<SubstrateAmount, Error<T>>

Calculates amount in.

Given an output amount of an coin and pair reserves, returns a required input amount of the other coin.

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impl<T: Config> Pallet<T>

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pub fn spot_price_for_block<KArg1, KArg2>( k1: KArg1, k2: KArg2, ) -> Option<Amount>

An auto-generated getter for SpotPriceForBlock.

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impl<T: Config> Pallet<T>

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pub fn median_price<KArg>(k: KArg) -> Option<Amount>
where KArg: EncodeLike<ExternalCoin>,

An auto-generated getter for MedianPrice.

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impl<T: Config> Pallet<T>

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pub fn security_oracle_value<KArg>(k: KArg) -> Option<Amount>
where KArg: EncodeLike<ExternalCoin>,

An auto-generated getter for SecurityOracleValue.

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impl<T: Config> Pallet<T>

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pub fn swap_volume<KArg>(k: KArg) -> Option<u64>
where KArg: EncodeLike<PoolId>,

An auto-generated getter for SwapVolume.

Trait Implementations§

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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> GetStorageVersion for Pallet<T>

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type CurrentStorageVersion = NoStorageVersionSet

This will be filled out by the pallet macro. Read more
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fn current_storage_version() -> Self::CurrentStorageVersion

Returns the current storage version as supported by the pallet.
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fn on_chain_storage_version() -> StorageVersion

Returns the on-chain storage version of the pallet as stored in the storage.
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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(n: BlockNumberFor<T>)

The block is being finalized. Implement to have something happen.
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fn on_idle(_n: BlockNumber, _remaining_weight: Weight) -> Weight

This will be run when the block is being finalized (before on_finalize). Read more
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fn on_initialize(_n: BlockNumber) -> Weight

The block is being initialized. Implement to have something happen. Read more
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fn on_runtime_upgrade() -> Weight

Perform a module upgrade. 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 module allows you to perform long-running tasks that make (by default) validators generate transactions that feed results of those long-running computations back on chain. Read more
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fn integrity_test()

Run integrity test. Read more
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impl<T: Config> IntegrityTest for Pallet<T>

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fn integrity_test()

Run integrity test. Read more
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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>)

The block is being finalized. Implement to have something happen. Read more
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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

The block is being finalized. Implement to have something happen in case there is leftover weight. Check the passed remaining_weight to make sure it is high enough to allow for your pallet’s extra computation. Read more
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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

The block is being initialized. Implement to have something happen. Read more
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impl<T: Config> OnRuntimeUpgrade for Pallet<T>

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fn on_runtime_upgrade() -> Weight

Perform a module upgrade. Read more
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fn pre_upgrade() -> Result<Vec<u8>, TryRuntimeError>

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

Execute some post-checks after a runtime upgrade. Read more
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fn try_on_runtime_upgrade(checks: bool) -> Result<Weight, DispatchError>

Same as on_runtime_upgrade, but perform the optional pre_upgrade and post_upgrade as well.
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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 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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impl<T: Config> Swap<<T as Config>::AccountId, u128, Coin> for Pallet<T>

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fn swap_exact_tokens_for_tokens( sender: T::AccountId, path: Vec<Coin>, amount_in: HigherPrecisionBalance, amount_out_min: Option<HigherPrecisionBalance>, send_to: T::AccountId, ) -> Result<HigherPrecisionBalance, DispatchError>

Swap exactly amount_in of coin path[0] for coin path[1]. If an amount_out_min is specified, it will return an error if it is unable to acquire the amount desired. Read more
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fn swap_tokens_for_exact_tokens( sender: T::AccountId, path: Vec<Coin>, amount_out: HigherPrecisionBalance, amount_in_max: Option<HigherPrecisionBalance>, send_to: T::AccountId, ) -> Result<HigherPrecisionBalance, DispatchError>

Take the path[0] coin and swap some amount for amount_out of the path[1]. If an amount_in_max is specified, it will return an error if acquiring amount_out would be too costly. Read more
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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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impl<T> Any for T
where T: 'static + ?Sized,

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Gets the TypeId of self. Read more
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where T: ?Sized,

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Immutably borrows from an owned value. Read more
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where Self: TryInto<T>,

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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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Compare self to key and return true if they are equal.
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Checks if this value is equivalent to the given key. Read more
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fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

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<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> 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,