Enum Quality 

pub enum Quality {
    Good,
    Uncertain,
    Bad,
}

How much a TagValue should be trusted, mirroring OPC’s own three-state quality model rather than collapsing it to a bool. “Uncertain” (e.g. a value held at its last known reading during a brief comms hiccup) is a real, actionable distinction from outright bad quality — not merely a presentation nuance — so callers that need to decide whether to trust a reading can react to it directly rather than losing the distinction.

Variants

Good

Uncertain

Bad

Implementations

impl Quality

pub fn is_trustworthy(self) -> bool

Whether a value with this quality should be trusted for tuning-critical decisions — feeding an MRFT tick, or treating an initial-readings snapshot as having actually succeeded. Only Good counts: MRFT’s peak/trough detection has no way to partially discount a merely-Uncertain reading the way a human operator glancing at a trend might, so treating it as untrustworthy is the safe default.

Trait Implementations

impl Clone for Quality

fn clone(&self) -> Quality

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Quality

impl Debug for Quality

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

Formats the value using the given formatter.

impl Eq for Quality

impl Hash for Quality

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Quality

fn eq(&self, other: &Quality) -> 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 StructuralPartialEq for Quality