Struct JournalHead 

pub struct JournalHead {
    pub step_seq: u64,
    pub record_digest: String,
}

The journal head: the last record of an operation’s chain.

Carries step_seq as well as the digest because CAS needs the chain position to validate that the incoming record actually follows the head (spec Task 8b implementation correction (c)).

Fields

step_seq: u64

record_digest: String

Trait Implementations

impl Clone for JournalHead

fn clone(&self) -> JournalHead

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JournalHead

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

Formats the value using the given formatter.

impl Eq for JournalHead

impl PartialEq for JournalHead

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for JournalHead