Enum EnabledOutcome 

#[non_exhaustive]
pub enum EnabledOutcome {
    Off,
    SometimesOn,
    AlwaysOn,
    ReProbe,
}

Result of the hot-path enabled check.

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.

Off

Cached Never — skip the emit branch.

SometimesOn

Cached Sometimes — caller must still call Observer::enabled.

AlwaysOn

Cached Always — caller skips Observer::enabled and emits.

ReProbe

Cache is stale or empty — caller must probe and cache(...) the result.

Trait Implementations

impl Clone for EnabledOutcome

fn clone(&self) -> EnabledOutcome

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EnabledOutcome

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

Formats the value using the given formatter.

impl PartialEq for EnabledOutcome

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl Copy for EnabledOutcome

impl Eq for EnabledOutcome

impl StructuralPartialEq for EnabledOutcome