Enum MemoryWriteOutcome 

pub enum MemoryWriteOutcome {
    Remembered,
    AlreadyRemembered,
    NotRemembered,
}

What became of a write.

Retrying is a normal thing for a caller to do — a network gave up, a process restarted — and the second attempt must not double the memory. Saying which of the two happened, rather than answering “fine” both times, is what lets a caller tell a retry that worked from a write it never sent.

Variants

Remembered

The entries are now in memory, put there by this call.

AlreadyRemembered

This exact write had already been made. Nothing changed.

NotRemembered

The backend does not keep memory, and said so in its capabilities. Not an error: a session with nowhere to record what it decided still runs, it just forgets.

Trait Implementations

impl Clone for MemoryWriteOutcome

fn clone(&self) -> MemoryWriteOutcome

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for MemoryWriteOutcome

impl Debug for MemoryWriteOutcome

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

Formats the value using the given formatter.

impl Eq for MemoryWriteOutcome

impl PartialEq for MemoryWriteOutcome

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for MemoryWriteOutcome