Struct MemChangedEvent 

pub struct MemChangedEvent {
    pub mem: String,
    pub head: String,
    pub previous: String,
    pub n_commits: u32,
}

Event payload emitted on every committed mutation.

Wire-format: matches the Section 3 of the concept doc one-to-one (mem, head, previous, n_commits). Serde-serializable so HTTP / SSE / WebSocket layers in consumer crates can forward the event verbatim without re-shaping.

Field semantics:

• mem: the writable mem name that produced the commit.
• head: the new HEAD SHA after the commit.
• previous: the HEAD SHA the engine had cached before this commit. Empty string when the engine had no prior head (folder backend, first ever commit on a freshly-mounted git-branch mem the engine has not probed yet). Consumers that need a full walk-from-empty-tree treat the empty value as EMPTY_TREE_SHA per the existing memstead_changes_since convention.
• n_commits: number of commits batched into this event. The per-mutation emit hook in record_self_write always sets this to 1 — one mutation, one commit — but the field stays in the wire shape so a future bundled-emit path can lift it without a breaking change.

Fields

mem: String

head: String

previous: String

n_commits: u32

Trait Implementations

impl Clone for MemChangedEvent

fn clone(&self) -> MemChangedEvent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MemChangedEvent

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MemChangedEvent

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for MemChangedEvent

impl PartialEq for MemChangedEvent

fn eq(&self, other: &MemChangedEvent) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for MemChangedEvent

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for MemChangedEvent