Enum ThreeValuedBool 

pub enum ThreeValuedBool {
    True,
    False,
    Null,
}

Variants

True

False

Null

Implementations

impl ThreeValuedBool

pub fn and(self, other: Self) -> Self

pub fn or(self, other: Self) -> Self

pub fn not(self) -> Self

pub fn implies(self, other: Self) -> Self

pub fn from_option_bool(v: Option<bool>) -> Self

pub fn into_option(self) -> Option<bool>

pub fn fold_and<I: IntoIterator<Item = Self>>(iter: I) -> Self

pub fn fold_or<I: IntoIterator<Item = Self>>(iter: I) -> Self

Trait Implementations

impl Clone for ThreeValuedBool

fn clone(&self) -> ThreeValuedBool

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ThreeValuedBool

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

Formats the value using the given formatter.

impl Hash for ThreeValuedBool

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Not for ThreeValuedBool

type Output = ThreeValuedBool

The resulting type after applying the ! operator.

fn not(self) -> Self::Output

Performs the unary ! operation.

impl PartialEq for ThreeValuedBool

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

impl Eq for ThreeValuedBool

impl StructuralPartialEq for ThreeValuedBool