Enum DisplayFormat 

#[non_exhaustive]
pub enum DisplayFormat {
    Full,
    DeltaOnly,
    NoPct,
    Arrow,
    PctOnly,
}

Per-row display layout for write_diff.

Full (default) emits the seven-column form (group | threads | metric | baseline | candidate | delta | %). The remaining variants are compact shortcuts for common operator workflows; each resolves to a fixed Column set before the renderer runs. A --columns override on the same invocation wins over the format’s default column set.

Arrow collapses baseline / candidate into a single cell shaped <baseline> -> <candidate> so a narrow display still surfaces directionality. The arrow column is paired with the dedicated Delta + Pct + Uptime columns (not fused into the arrow cell itself), so the renderer keeps the deltas readable on either side of the arrow form. The arrow cell shape mirrors cgroup_cell’s so primary and cgroup tables stay visually consistent.

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.

Full

Default — emit baseline, candidate, delta, and pct columns alongside group / threads / metric.

DeltaOnly

Drop baseline + candidate columns; keep delta + pct.

NoPct

Drop pct column; keep baseline + candidate + delta.

Arrow

Arrow form: <baseline> -> <candidate> cell paired with the dedicated Delta + Pct + Uptime columns. Compact view for “show me direction at a glance” while still carrying the deltas on the same row.

PctOnly

Drop baseline / candidate / delta; keep pct only.

Trait Implementations

impl Clone for DisplayFormat

fn clone(&self) -> DisplayFormat

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DisplayFormat

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

Formats the value using the given formatter.

impl Default for DisplayFormat

fn default() -> DisplayFormat

Returns the “default value” for a type.

impl PartialEq for DisplayFormat

fn eq(&self, other: &DisplayFormat) -> 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 ValueEnum for DisplayFormat

fn value_variants<'a>() -> &'a [Self]

All possible argument values, in display order.

fn to_possible_value<'a>(&self) -> Option<PossibleValue>

The canonical argument value.

fn from_str(input: &str, ignore_case: bool) -> Result<Self, String>

Parse an argument into Self.

impl Copy for DisplayFormat

impl Eq for DisplayFormat

impl StructuralPartialEq for DisplayFormat