Enum Cause 

#[non_exhaustive]
pub enum Cause {
    Initial,
    Rescan,
    External,
}

Reason a GenerationEvent was emitted.

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.

Initial

Initial state observed at construction.

Rescan

A rescan completed.

External

External invalidation (e.g. config reload).

Trait Implementations

impl Clone for Cause

fn clone(&self) -> Cause

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Cause

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

Formats the value using the given formatter.