Enum DeltaWithheld 

pub enum DeltaWithheld {
    ContaminatedByUnmeasuredRuns {
        raw: usize,
        gglib: usize,
    },
}

Why an arm-level delta is not reported.

A separate state rather than a zero or a silently-diluted number, for the reason ADR 0004’s decision 3 gives about blindness: a difference that could not be taken and one that came out small license different actions, and a surface that renders them alike destroys the distinction at the last step.

Variants

ContaminatedByUnmeasuredRuns

One or both arms carry runs that never reached the model, so every mean on them is pulled toward zero by scores that measure nothing.

Measured: five such runs in the 2026-08-28 eval moved the gglib arm’s tool accuracy from 0.966 to 0.889 and its wall time from 553s to 3553s, and the report printed the resulting −0.058 composite as its headline under a warning saying those arms were floors rather than measurements. Both statements were on the same screen; only one of them was read.

Fields

raw: usize

Unmeasured runs in the raw arm.

gglib: usize

Unmeasured runs in the gglib arm.

Implementations

impl DeltaWithheld

pub const fn for_arms(raw: &ArmScores, gglib: &ArmScores) -> Option<Self>

Whether these two arms can be compared at the arm level at all.

Trait Implementations

impl Clone for DeltaWithheld

fn clone(&self) -> DeltaWithheld

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DeltaWithheld

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for DeltaWithheld

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for DeltaWithheld

fn eq(&self, other: &DeltaWithheld) -> 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 Serialize for DeltaWithheld

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for DeltaWithheld

impl Eq for DeltaWithheld

impl StructuralPartialEq for DeltaWithheld