Enum Changed 

pub enum Changed {
    Nothing,
    Runs(BTreeSet<RunId>),
    Everything,
}

What the hints since a reader’s last read say it must read again: nothing, these Runs, or everything. Session hints are not about the state database and change nothing here.

Variants

Nothing

Runs(BTreeSet<RunId>)

Everything

Implementations

impl Changed

pub fn add(&mut self, change: &Change)

pub fn merge(&mut self, other: Self)

Keep what other says changed as well, as when a read that took it was not used.

pub fn or_written(&self, written: bool) -> Self

What a read reads again: what the hints named or, when the database was written and no hint named the change yet (a writer that could not reach the hub), everything.

pub fn run(&self, id: &RunId) -> bool

Whether Run id may have changed.

Trait Implementations

impl Clone for Changed

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 Changed

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

Formats the value using the given formatter.

impl Default for Changed

fn default() -> Self

Returns the “default value” for a type.

impl Eq for Changed

impl PartialEq for Changed

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Changed