Struct EVec 

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

A vector that is guaranteed to be empty.

Naturally, the following operations are impossible with EVec:

• append
• insert
• push
• remove

And many others have been elided for being pointless (like drain and sort).

Implementations

impl<T> EVec<T>

pub const fn contains(&self, _: &T) -> bool

Go ahead, see if it’s in there.

pub fn from_vec(vec: Vec<T>) -> Option<EVec<T>>

Attempt to convert a possibly non-empty Vec into one that is guaranteed to be empty.

pub const fn is_empty(&self) -> bool

This may be the best function I’ve ever written. Go on, guess the return value.

pub fn iter(&self) -> Empty<&T>

Wow, it’s even an Iterator?

pub const fn len(&self) -> usize

No, sorry, this is the best function I’ve ever written.

pub fn new() -> EVec<T>

Think of the possibilities!

Trait Implementations

impl<T: Clone> Clone for EVec<T>

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T> Debug for EVec<T>

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

Formats the value using the given formatter.

impl<T: Default> Default for EVec<T>

fn default() -> EVec<T>

Returns the “default value” for a type.

impl<T> From<EVec<T>> for Vec<T>

fn from(_: EVec<T>) -> Self

Converts to this type from the input type.

impl<T: Hash> Hash for EVec<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> IntoIterator for EVec<T>

type Item = T

The type of the elements being iterated over.

type IntoIter = Empty<T>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl<T: Ord> Ord for EVec<T>

fn cmp(&self, other: &EVec<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 EVec<T>

fn eq(&self, other: &EVec<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 EVec<T>

fn partial_cmp(&self, other: &EVec<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> TryFrom<Vec<T>> for EVec<T>

type Error = &'static str

The type returned in the event of a conversion error.

fn try_from(value: Vec<T>) -> Result<Self, Self::Error>

Performs the conversion.

impl<T: Eq> Eq for EVec<T>

impl<T> StructuralPartialEq for EVec<T>