Struct Updates 

pub struct Updates<U: Update, B = Bytes> {
    pub keys: Stash<Lists<ContainerOf<U::Key>>, B>,
    pub vals: Stash<Lists<ContainerOf<U::Val>>, B>,
    pub times: Stash<Lists<ContainerOf<U::Time>>, B>,
    pub diffs: Stash<Lists<ContainerOf<U::Diff>>, B>,
}

Stash-backed update storage: each column may be typed (writable) or borrowed from wire bytes (read-only, zero-copy).

Construction sites work in UpdatesTyped; convert via From at the boundary. Reader code uses UpdatesView via Updates::view, which produces the same shape regardless of whether the columns are typed or borrowed.

Fields

keys: Stash<Lists<ContainerOf<U::Key>>, B>

Outer key list (one entry per group of keys at the trie root).

vals: Stash<Lists<ContainerOf<U::Val>>, B>

Per-key list of vals.

times: Stash<Lists<ContainerOf<U::Time>>, B>

Per-val list of times.

diffs: Stash<Lists<ContainerOf<U::Diff>>, B>

Per-time list of diffs.

Implementations

impl<U: Update, B: Deref<Target = [u8]> + Clone + 'static> Updates<U, B>

pub fn view(&self) -> UpdatesView<'_, U>

Borrow the four columns as a single UpdatesView.

pub fn len(&self) -> usize

Total number of updates (records) in the trie.

pub fn is_empty(&self) -> bool

Whether the trie is empty.

pub fn into_typed(self) -> UpdatesTyped<U>

Convert to fully owned form, copying any Stash::Bytes columns into typed Lists. Already-typed columns pass through with no copy.

This method should be avoided unless typed containers are truly needed.

Trait Implementations

impl<U: Update, B: Clone> Clone for Updates<U, B>

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<U: Update, B> Default for Updates<U, B>

fn default() -> Self

Returns the “default value” for a type.

impl<U: Update, B> From<UpdatesTyped<U>> for Updates<U, B>

fn from(owned: UpdatesTyped<U>) -> Self

Converts to this type from the input type.