Struct Three

pub struct Three<T> { /* private fields */ }

Available on crate feature internal only.

A vector capable of storing at most 3 elements.

Implementations

impl<T> Three<T>

pub fn new() -> Self

Create a new Three with no elements, but the capacity for them pre-allocated.

This technically allocates space for 4 elements, so that when Self::push overfills, it does not re-allocate.

pub fn push(self, item: T) -> Result<Self, [T; 4]>

Push a new item into this Three, or return exactly four items (including the pushed item) if the Three is already full.

Note that this takes ownership of self and returns a new Three with the pushed item if successful.

pub fn push_mut(&mut self, item: T) -> Self

Push a new item into this Three, or panic if it would overfill it.

pub fn is_full(&self) -> bool

Determine if this Three is full.

If this returns true, then Self::push will return Err; otherwise, Self::push will return Ok.

pub fn is_empty(&self) -> bool

Determine if this Three is empty.

pub fn len(&self) -> u8

Get the number of elements in this Three.

pub fn iter(&self) -> impl Iterator<Item = &T>

Get an iterator over the elements of the Three.

pub fn iter_mut(&mut self) -> impl Iterator<Item = &mut T>

Get an iterator over mutable elements of the Three.

pub fn elems(&self) -> Elems<'_, T>

Get an enumeration of the elements of this Three by reference.

pub fn elems_mut(&mut self) -> ElemsMut<'_, T>

Get an enumeration of the elements of this Three by mutable reference.

pub fn into_elems(self) -> IntoElems<T>

Convert this Three into an enumeration of its elements.

Trait Implementations

impl<T: Clone> Clone for Three<T>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T> Debug for Three<T>

where T: Debug,

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

Formats the value using the given formatter.

impl<T> Default for Three<T>

fn default() -> Self

Returns the “default value” for a type.

impl<'de, T: Deserialize<'de>> Deserialize<'de> for Three<T>

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<T> From<IntoElems<T>> for Three<T>

fn from(elems: IntoElems<T>) -> Self

Converts to this type from the input type.

impl<T> From<Three<T>> for IntoElems<T>

fn from(three: Three<T>) -> Self

Converts to this type from the input type.

impl<T: Hash> Hash for Three<T>

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: Ord> Ord for Three<T>

fn cmp(&self, other: &Three<T>) -> 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> PartialEq for Three<T>

fn eq(&self, other: &Three<T>) -> 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> PartialOrd for Three<T>

fn partial_cmp(&self, other: &Three<T>) -> 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> Serialize for Three<T>

where T: Serialize,

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<T: Eq> Eq for Three<T>

impl<T> StructuralPartialEq for Three<T>