Struct OptionalBool 

pub struct OptionalBool(/* private fields */);

An Optional for bool with 1 byte size. std::option::Option<bool> have size 1 since rustc 1.23.

Trait Implementations

impl Clone for OptionalBool

fn clone(&self) -> OptionalBool

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OptionalBool

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

Formats the value using the given formatter.

impl Default for OptionalBool

fn default() -> OptionalBool

Returns the “default value” for a type.

impl From<Option<bool>> for OptionalBool

fn from(value: Option<bool>) -> Self

Converts to this type from the input type.

impl From<bool> for OptionalBool

fn from(value: bool) -> Self

Converts to this type from the input type.

impl Hash for OptionalBool

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 Optional<bool> for OptionalBool

fn to_option_ref(&self) -> Option<&bool>

Returns an Option<&T> that is equivalent to this Optional.

fn to_option_mut(&mut self) -> Option<&mut bool>

Returns an Option<&mut T> that is equivalent to this Optional.

fn into_option(self) -> Option<bool>

Converts this Optional to the equivalent Option.

impl Ord for OptionalBool

fn cmp(&self, other: &OptionalBool) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for OptionalBool

fn eq(&self, other: &OptionalBool) -> 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 PartialOrd for OptionalBool

fn partial_cmp(&self, other: &OptionalBool) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for OptionalBool

impl Eq for OptionalBool

impl StructuralPartialEq for OptionalBool