Enum Taken 

pub enum Taken {
    Same,
    PresenceKept,
}

What this crate’s reader does with a value the engine resolves.

Holds no value of its own, which is what keeps the axis closed: a consumer can read that the reader declined the engine’s answer, never an alternative number in its place.

Variants

Same

The reader hands back the engine’s value.

PresenceKept

The model holds the absence instead, because absence and the engine’s value are both real in the corpus and collapsing them would lose one.

Trait Implementations

impl Clone for Taken

fn clone(&self) -> Taken

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Taken

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

Formats the value using the given formatter.

impl PartialEq for Taken

fn eq(&self, other: &Taken) -> 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 Taken

impl Eq for Taken

impl StructuralPartialEq for Taken