Enum TxnOutcome 

#[non_exhaustive]
pub enum TxnOutcome {
    Committed,
    Abandoned,
}

How a transaction finished.

#[non_exhaustive]: this crate has out-of-tree consumers.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Committed

The normal ending: the guard dropped, or the write scope closed.

Abandoned

SceneTransaction::abandon — a cancelled interaction.

The scene is not rolled back. The framework owns no inverse-application routine and will not grow one, because applying an inverse is the first 80 % of an undo stack. The record is delivered so the consumer can revert from the old values it was handed, without pushing anything a redo could replay.

Trait Implementations

impl Clone for TxnOutcome

fn clone(&self) -> TxnOutcome

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for TxnOutcome

impl Debug for TxnOutcome

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

Formats the value using the given formatter.

impl Default for TxnOutcome

fn default() -> TxnOutcome

Returns the “default value” for a type.

impl Eq for TxnOutcome

impl PartialEq for TxnOutcome

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for TxnOutcome