Enum salsa_2022::cycle::CycleRecoveryStrategy

pub enum CycleRecoveryStrategy {
    Panic,
    Fallback,
}

Cycle recovery strategy: Is this query capable of recovering from a cycle that results from executing the function? If so, how?

Variants

Panic

Cannot recover from cycles: panic.

This is the default. It is also what happens if a cycle occurs and the queries involved have different recovery strategies.

In the case of a failure due to a cycle, the panic value will be XXX (FIXME).

Fallback

Recovers from cycles by storing a sentinel value.

This value is computed by the QueryFunction::cycle_fallback function.

Trait Implementations

impl Clone for CycleRecoveryStrategy

fn clone(&self) -> CycleRecoveryStrategy

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for CycleRecoveryStrategy

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

Formats the value using the given formatter.

impl PartialEq<CycleRecoveryStrategy> for CycleRecoveryStrategy

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for CycleRecoveryStrategy

impl Eq for CycleRecoveryStrategy

impl StructuralEq for CycleRecoveryStrategy

impl StructuralPartialEq for CycleRecoveryStrategy