Enum Tribool 

pub enum Tribool {
    True,
    False,
    Null,
}

Variants

True

False

Null

Implementations

impl Tribool

pub fn is_true(self) -> bool

pub fn is_false(self) -> bool

pub fn is_null(self) -> bool

Trait Implementations

impl Clone for Tribool

fn clone(&self) -> Tribool

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Tribool

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

Formats the value using the given formatter.

impl From<bool> for Tribool

fn from(v: bool) -> Self

Converts to this type from the input type.

impl Not for Tribool

type Output = Tribool

The resulting type after applying the ! operator.

fn not(self) -> Self::Output

Performs the unary ! operation.

impl PartialEq for Tribool

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

impl Eq for Tribool

impl StructuralPartialEq for Tribool