Enum ExpectedRevision 

pub enum ExpectedRevision {
    Any,
    NoStream,
    Exact(StreamRevision),
}

Optimistic-concurrency expectation checked against a stream’s current revision, in the same critical section that assigns positions. A failed expectation appends nothing.

Variants

Any

Append unconditionally.

NoStream

Require that the stream does not yet exist.

Exact(StreamRevision)

Require the stream’s current revision to equal this value.

Trait Implementations

impl Clone for ExpectedRevision

fn clone(&self) -> ExpectedRevision

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ExpectedRevision

impl Debug for ExpectedRevision

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

Formats the value using the given formatter.

impl Eq for ExpectedRevision

impl PartialEq for ExpectedRevision

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ExpectedRevision