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MapEntry

ic_storage::adapter

Struct MapEntry 

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pub struct MapEntry<K, V> { /* private fields */ }
Expand description

MapEntry

An owned key and lazily decoded value from an ordered scan.

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impl<K, V: Storable> MapEntry<K, V>

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pub const fn key(&self) -> &K

Borrow the decoded key.

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pub fn value(&self) -> Result<V, CollectionError>

Decode the value using its declared codec.

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Returns the application codec or declared-bound error for this value.

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pub fn into_pair(self) -> Result<(K, V), CollectionError>

Consume the entry and decode its value.

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Returns the application codec or declared-bound error for this value.

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pub fn into_key(self) -> K

Consume the entry without decoding its value.

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pub fn into_value(self) -> Result<V, CollectionError>

Consume the entry and decode only its value.

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Returns the application codec or declared-bound error for this value.

Auto Trait Implementations§

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impl<K, V> Freeze for MapEntry<K, V>
where K: Freeze, PhantomData<V>: Freeze,

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impl<K, V> RefUnwindSafe for MapEntry<K, V>
where K: RefUnwindSafe, PhantomData<V>: RefUnwindSafe,

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impl<K, V> Send for MapEntry<K, V>
where K: Send, PhantomData<V>: Send,

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impl<K, V> Sync for MapEntry<K, V>
where K: Sync, PhantomData<V>: Sync,

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impl<K, V> Unpin for MapEntry<K, V>
where K: Unpin, PhantomData<V>: Unpin,

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impl<K, V> UnsafeUnpin for MapEntry<K, V>
where K: UnsafeUnpin, PhantomData<V>: UnsafeUnpin,

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impl<K, V> UnwindSafe for MapEntry<K, V>
where K: UnwindSafe, PhantomData<V>: 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 = !

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

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.