Struct JournalCursor 

pub struct JournalCursor {
    pub last_sequence: u64,
}

Opaque cursor into the write journal.

Used to track the position of a consumer so that only new entries need to be delivered on subsequent calls to StorageWriteJournal::entries_since.

Fields

last_sequence: u64

The sequence number of the last entry seen by this cursor. 0 indicates the cursor is positioned before the very first entry.

Implementations

impl JournalCursor

pub fn is_at_start(&self) -> bool

Returns true when the cursor is positioned before any entry (i.e., last_sequence == 0).

Trait Implementations

impl Clone for JournalCursor

fn clone(&self) -> JournalCursor

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JournalCursor

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

Formats the value using the given formatter.

impl Eq for JournalCursor

impl PartialEq for JournalCursor

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for JournalCursor