Struct concordium_std::VacantEntry

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pub struct VacantEntry<'a, K, V, S> { /* private fields */ }
Expand description

A view into a vacant entry in a StateMap. It is part of the Entry enum.

Differs from VacantEntryRaw in that this automatically handles serialization.

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impl<'a, K, V, StateApi> VacantEntry<'a, K, V, StateApi>where
K: Serial,
V: Serial,
StateApi: HasStateApi,

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pub fn key(&self) -> &K

Get a reference to the VacantEntry’s key.

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pub fn into_key(self) -> K

Take ownership of the key.

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pub fn insert(self, value: V) -> OccupiedEntry<'a, K, V, StateApi>

Sets the value of the entry with the VacantEntry’s key.

Auto Trait Implementations§

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impl<'a, K, V, S> RefUnwindSafe for VacantEntry<'a, K, V, S>where
K: RefUnwindSafe,
S: RefUnwindSafe,
V: RefUnwindSafe,

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impl<'a, K, V, S> Send for VacantEntry<'a, K, V, S>where
K: Send,
S: Send,
V: Send,

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impl<'a, K, V, S> Sync for VacantEntry<'a, K, V, S>where
K: Sync,
S: Sync,
V: Sync,

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impl<'a, K, V, S> Unpin for VacantEntry<'a, K, V, S>where
K: Unpin,
S: Unpin,

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impl<'a, K, V, S> !UnwindSafe for VacantEntry<'a, K, V, S>

Blanket Implementations§

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impl<T> Any for Twhere
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 Twhere
T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

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

const: unstable · source§

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

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source§

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 Twhere
U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

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 Twhere
U: TryFrom<T>,

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

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.