multiversx_sc::types

Struct PassValue

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pub struct PassValue<T>(pub T);
Expand description

Simply passes a value to the result.

The value is constant with respect to the tx, will always be returned, irrespective of the tx execution.

It is especially useful in multi-calls, since it can pass context from the setup section to the result processing section.

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§0: T

Trait Implementations§

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impl<Env, Original, T> RHListItem<Env, Original> for PassValue<T>
where Env: TxEnv,

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type Returns = T

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impl<RawResult, Env, Original, T> RHListItemExec<RawResult, Env, Original> for PassValue<T>
where Env: TxEnv,

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fn item_process_result(self, _raw_result: &RawResult) -> T

The main functionality of a result handler, it either does some computation internally (e.g. execution of a lambda function), or produces a result, or both.
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fn item_tx_expect(&self, prev: Env::RHExpect) -> Env::RHExpect

Part of the execution pre-processing, each result handler needs to produce an “expect” field, as defined in the environment. Read more

Auto Trait Implementations§

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impl<T> Freeze for PassValue<T>
where T: Freeze,

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

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

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

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

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impl<T> UnwindSafe for PassValue<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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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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.