Enum crokey::OneToThree

pub enum OneToThree<T> {
    One(T),
    Two(T, T),
    Three(T, T, T),
}

An ordered set of 1, 2 or 3 elements, allowing pattern matching.

Implements Copy, Clone, PartialEq, Eq, Debug, etc. if the element type does.

Variants

One(T)

Two(T, T)

Three(T, T, T)

Implementations

impl<T> OneToThree<T>

pub fn one(a: T) -> OneToThree<T>

pub fn two(a: T, b: T) -> OneToThree<T>

pub fn three(a: T, b: T, c: T) -> OneToThree<T>

pub fn len(&self) -> usize

pub fn iter(&self) -> OneToThreeIter<'_, T>

pub fn first(&self) -> &T

pub fn first_mut(&mut self) -> &mut T

pub fn get(&self, i: usize) -> Option<&T>

pub fn get_mut(&mut self, i: usize) -> Option<&mut T>

pub fn to_vec(self) -> Vec<T>

pub fn to_ref_vec(&self) -> Vec<&T>

pub fn sorted(self) -> OneToThree<T>

where T: PartialOrd,

pub fn map<B, F>(self, f: F) -> OneToThree<B>

where F: Fn(T) -> B,

pub fn try_map<B, E, F>(self, f: F) -> Result<OneToThree<B>, E>

where F: Fn(T) -> Result<B, E>,

Trait Implementations

impl<T> Clone for OneToThree<T>

where T: Clone + Copy,

fn clone(&self) -> OneToThree<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T> Debug for OneToThree<T>

where T: Debug,

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

Formats the value using the given formatter.

impl<T> From<(T, T)> for OneToThree<T>

fn from(t: (T, T)) -> OneToThree<T>

Converts to this type from the input type.

impl<T> From<(T, T, T)> for OneToThree<T>

fn from(t: (T, T, T)) -> OneToThree<T>

Converts to this type from the input type.

impl<T> From<T> for OneToThree<T>

fn from(a: T) -> OneToThree<T>

Converts to this type from the input type.

impl<T> Hash for OneToThree<T>

where T: Hash,

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

where H: Hasher,

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<'a, T> IntoIterator for &'a OneToThree<T>

type Item = &'a T

The type of the elements being iterated over.

type IntoIter = OneToThreeIter<'a, T>

Which kind of iterator are we turning this into?

fn into_iter(self) -> OneToThreeIter<'a, T>

Creates an iterator from a value.

impl<T> PartialEq for OneToThree<T>

where T: PartialEq,

fn eq(&self, other: &OneToThree<T>) -> bool

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T> TryFrom<Vec<T>> for OneToThree<T>

type Error = &'static str

The type returned in the event of a conversion error.

fn try_from( v: Vec<T> ) -> Result<OneToThree<T>, <OneToThree<T> as TryFrom<Vec<T>>>::Error>

Performs the conversion.

impl<T> Copy for OneToThree<T>

where T: Copy,

impl<T> Eq for OneToThree<T>

where T: Eq,