Enum DurableFormat 

pub enum DurableFormat {
    Versioned(u32),
    Unversioned,
}

What format a durable database is in.

Variants

Versioned(u32)

A format record states the version.

Unversioned

No format record: the database predates format versioning.

This is a version, not an absence of one. It is the only case where the records themselves are examined to decide compatibility, and that examination is a deliberate one-time probe rather than a deserialization attempt whose failure is discarded.

Trait Implementations

impl Clone for DurableFormat

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DurableFormat

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

Formats the value using the given formatter.

impl Default for DurableFormat

fn default() -> Self

Returns the “default value” for a type.

impl Display for DurableFormat

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

Formats the value using the given formatter.

impl Eq for DurableFormat

impl PartialEq for DurableFormat

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DurableFormat