Enum V3 

pub enum V3 {
    True,
    False,
    Unknown,
}

Three-valued truth (Kleene). UNKNOWN is a first-class value, not hidden FALSE.

Variants

True

Known true.

False

Known false.

Unknown

Not asserted and not derivable — the absence of information, not falsity.

Trait Implementations

impl Clone for V3

fn clone(&self) -> V3

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for V3

impl Debug for V3

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

Formats the value using the given formatter.

impl Eq for V3

impl PartialEq for V3

fn eq(&self, other: &V3) -> 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 V3