Enum LBool 

pub enum LBool {
    True,
    False,
    Undef,
}

A Lifted boolean.

Variants

True

Represents True.

False

Represents False.

Undef

Represents neither True nor False, usually used when variable is unassigned.

Trait Implementations

impl Clone for LBool

fn clone(&self) -> LBool

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LBool

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

Formats the value using the given formatter.

impl From<bool> for LBool

fn from(b: bool) -> Self

Convert bool to LBool.

impl Not for LBool

fn not(self) -> Self

Returns True for False and False for True. If the input is Undef, then Undef is returned.

type Output = LBool

The resulting type after applying the ! operator.

impl PartialEq for LBool

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

impl StructuralPartialEq for LBool