Enum ena::snapshot_vec::UndoLog

pub enum UndoLog<D: SnapshotVecDelegate> {
    NewElem(usize),
    SetElem(usize, D::Value),
    Other(D::Undo),
}

Variants

NewElem(usize)

New variable with given index was created.

SetElem(usize, D::Value)

Variable with given index was changed from the given value.

Other(D::Undo)

Extensible set of actions

Trait Implementations

impl<D: SnapshotVecDelegate> Clone for UndoLog<D>where D::Value: Clone, D::Undo: Clone,

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<D: Debug + SnapshotVecDelegate> Debug for UndoLog<D>where D::Value: Debug, D::Undo: Debug,

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

Formats the value using the given formatter.

impl<D: SnapshotVecDelegate> Rollback<UndoLog<D>> for SnapshotVecStorage<D>

fn reverse(&mut self, undo: UndoLog<D>)

impl<D: SnapshotVecDelegate> Rollback<UndoLog<D>> for Vec<D::Value>

fn reverse(&mut self, undo: UndoLog<D>)