Struct DerivedRow 

#[non_exhaustive]
pub struct DerivedRow {

    pub group_key: String,
    pub display_key: String,
    pub thread_count_a: usize,
    pub thread_count_b: usize,
    pub metric_name: &'static str,
    pub metric_ladder: ScaleLadder,
    pub is_ratio: bool,
    pub baseline: Option<DerivedValue>,
    pub candidate: Option<DerivedValue>,
    pub delta: Option<f64>,
    pub delta_pct: Option<f64>,
    pub sort_by_cell: Option<String>,
    pub sort_by_delta: Option<f64>,
}

One row in the derived-metrics table: (matched group, derivation) with the computed scalar from both sides.

Mirrors DiffRow in shape so the renderer can reuse the same (group | threads | metric | baseline | candidate | delta | %) column layout. The % column is suppressed for rows whose derivation is a ratio (super::DerivedMetricDef::is_ratio true) — absolute delta on a [0, 1] ratio is already in percentage points so a delta_pct readout would be confusing.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

group_key: String

display_key: String

thread_count_a: usize

thread_count_b: usize

metric_name: &'static str

metric_ladder: ScaleLadder

Auto-scale ladder for the row’s value/delta cells. Mirrors DiffRow::metric_ladder; sourced from super::DerivedMetricDef::ladder at build time.

is_ratio: bool

True when the derivation produces a ratio. Renderer suppresses the % column for ratio rows.

baseline: Option<DerivedValue>

None when the input metric was missing on this side or the formula divides by zero.

candidate: Option<DerivedValue>

None with the same semantics as Self::baseline.

delta: Option<f64>

Signed candidate − baseline; None when either side is None.

delta_pct: Option<f64>

delta / baseline; None when baseline is zero, either side is None, OR the row is a ratio (suppressed for ratios so a 0.5 → 0.6 row doesn’t render as +20% when the natural read is +10pp).

sort_by_cell: Option<String>

Pre-rendered cell string for the SortBy column under --sort-by. Same value for every row in a group; None when no --sort-by is set. Mirrors DiffRow::sort_by_cell.

sort_by_delta: Option<f64>

Sort metric’s delta for this group, used to color the SortBy column. Mirrors DiffRow::sort_by_delta.

Trait Implementations

impl Clone for DerivedRow

fn clone(&self) -> DerivedRow

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DerivedRow

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

Formats the value using the given formatter.