Enum Outcome 

pub enum Outcome {
    Attempt,
    Ok,
    Error(String),
}

The result of one mutation step, replacing a stringly-typed result plus a loosely-coupled error. The error payload exists only on Outcome::Error, so a record can never claim success while carrying an error (or vice versa).

Variants

Attempt

The mutation is about to run (audited before any side effect).

Ok

The mutation completed successfully.

Error(String)

The mutation failed; the payload is the error detail.

Trait Implementations

impl Clone for Outcome

fn clone(&self) -> Outcome

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Outcome

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

Formats the value using the given formatter.