Struct fera_optional::Optioned

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

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 copy of the value.

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

Performs copy-assignment from source.

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

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

fn eq(&self, __arg_0: &Optioned<T, B>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &Optioned<T, B>) -> bool

This method tests for !=.

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

fn partial_cmp(&self, __arg_0: &Optioned<T, B>) -> Option<Ordering>

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

fn lt(&self, __arg_0: &Optioned<T, B>) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, __arg_0: &Optioned<T, B>) -> bool

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

fn gt(&self, __arg_0: &Optioned<T, B>) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, __arg_0: &Optioned<T, B>) -> bool

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

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

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

fn cmp(&self, __arg_0: &Optioned<T, B>) -> Ordering

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

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

fn hash<__HTB: Hasher>(&self, __arg_0: &mut __HTB)

Feeds this value into the given [Hasher].

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

Feeds a slice of this type into the given [Hasher].

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

Performs the conversion.

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

fn from(value: T) -> Self

Performs the conversion.

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.