Struct Optioned 

pub struct Optioned<T, B: BuildNone<T>> { /* private fields */ }

An Optional that represents None with a specified value (B::none()) of T domain.

Trait Implementations

impl<T: Clone, B: Clone + BuildNone<T>> Clone for Optioned<T, B>

fn clone(&self) -> Optioned<T, B>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Eq + Debug, B: BuildNone<T>> Debug for Optioned<T, B>

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

Formats the value using the given formatter.

impl<T, B: BuildNone<T>> Default for Optioned<T, B>

fn default() -> Self

Returns the “default value” for a type.

impl<T, B: BuildNone<T>> From<Option<T>> for Optioned<T, B>

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

Converts to this type from the input type.

impl<T, B: BuildNone<T>> From<T> for Optioned<T, B>

fn from(value: T) -> Self

Converts to this type from the input type.

impl<T: Hash, B: Hash + BuildNone<T>> Hash for Optioned<T, B>

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<T: Eq, B: BuildNone<T>> Optional<T> for Optioned<T, B>

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

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

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

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

fn into_option(self) -> Option<T>

Converts this Optional to the equivalent Option.

impl<T: Ord, B: Ord + BuildNone<T>> Ord for Optioned<T, B>

fn cmp(&self, other: &Optioned<T, B>) -> 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<T: PartialEq, B: PartialEq + BuildNone<T>> PartialEq for Optioned<T, B>

fn eq(&self, other: &Optioned<T, B>) -> 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<T: PartialOrd, B: PartialOrd + BuildNone<T>> PartialOrd for Optioned<T, B>

fn partial_cmp(&self, other: &Optioned<T, B>) -> 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<T: Copy, B: Copy + BuildNone<T>> Copy for Optioned<T, B>

impl<T: Eq, B: Eq + BuildNone<T>> Eq for Optioned<T, B>

impl<T, B: BuildNone<T>> StructuralPartialEq for Optioned<T, B>