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StableLog

Struct StableLog 

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pub struct StableLog<T: Storable, M: Memory = DefaultMemoryImpl> { /* private fields */ }
Expand description

Governed upstream Log; initialization and failures follow upstream contracts.

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impl<T: Storable, M: Memory> StableLog<T, M>

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pub fn new( index_memory: RuntimeMemory<M>, data_memory: RuntimeMemory<M>, ) -> Self

Delegates to upstream Log::new with the governed allocation.

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pub fn init( index_memory: RuntimeMemory<M>, data_memory: RuntimeMemory<M>, ) -> Self

Delegates to upstream Log::init with the governed allocation.

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pub fn first(&self) -> Option<T>

Delegates to upstream Log::first with the governed allocation.

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pub fn last(&self) -> Option<T>

Delegates to upstream Log::last with the governed allocation.

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pub fn get(&self, idx: u64) -> Option<T>

Delegates to upstream Log::get with the governed allocation.

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pub fn len(&self) -> u64

Delegates to upstream Log::len with the governed allocation.

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pub fn is_empty(&self) -> bool

Delegates to upstream Log::is_empty with the governed allocation.

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pub fn append(&self, item: &T) -> Result<u64, LogWriteError>

Delegates to upstream Log::append with the governed allocation.

§Errors

Returns the upstream write error if memory cannot grow.

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pub fn iter(&self) -> LogIter<'_, T, M>

Delegates to upstream Log::iter with the governed allocation.

Trait Implementations§

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impl<'a, T: Storable, M: Memory> IntoIterator for &'a StableLog<T, M>

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type Item = T

The type of the elements being iterated over.
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type IntoIter = Iter<'a, T, RuntimeMemory<M>, RuntimeMemory<M>>

Which kind of iterator are we turning this into?
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fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value. Read more

Auto Trait Implementations§

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impl<T, M = Rc<RefCell<Vec<u8>>>> !Freeze for StableLog<T, M>

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impl<T, M = Rc<RefCell<Vec<u8>>>> !RefUnwindSafe for StableLog<T, M>

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impl<T, M = Rc<RefCell<Vec<u8>>>> !Send for StableLog<T, M>

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impl<T, M = Rc<RefCell<Vec<u8>>>> !Sync for StableLog<T, M>

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impl<T, M = Rc<RefCell<Vec<u8>>>> !UnwindSafe for StableLog<T, M>

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impl<T, M> Unpin for StableLog<T, M>

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impl<T, M> UnsafeUnpin for StableLog<T, M>

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.