Struct IndexVec 

pub struct IndexVec<I: Idx, T> { /* private fields */ }

A Vec that can only be indexed by a specific index type I.

Implementations

impl<I: Idx, T> IndexVec<I, T>

pub const fn new() -> Self

Create a new empty IndexVec.

pub fn with_capacity(capacity: usize) -> Self

Create with pre-allocated capacity.

pub fn push(&mut self, val: T) -> I

Push a value and return its index.

pub fn get(&self, idx: I) -> Option<&T>

Get a reference to the value at the given index.

pub fn get_mut(&mut self, idx: I) -> Option<&mut T>

Get a mutable reference to the value at the given index.

pub fn len(&self) -> usize

Returns the number of elements.

pub fn is_empty(&self) -> bool

Returns true if empty.

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

Returns an iterator over the values.

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

Returns a mutable iterator over the values.

pub fn iter_enumerated(&self) -> impl Iterator<Item = (I, &T)>

Returns an iterator over (index, value) pairs.

pub fn indices(&self) -> impl Iterator<Item = I>

Returns an iterator over indices.

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

Access the underlying raw Vec.

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

Consume and return the underlying Vec.

Trait Implementations

impl<I: Clone + Idx, T: Clone> Clone for IndexVec<I, T>

fn clone(&self) -> IndexVec<I, T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<I: Idx, T: Debug> Debug for IndexVec<I, T>

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

Formats the value using the given formatter.

impl<I: Idx, T> Default for IndexVec<I, T>

fn default() -> Self

Returns the “default value” for a type.

impl<I: Idx, T> FromIterator<T> for IndexVec<I, T>

fn from_iter<It: IntoIterator<Item = T>>(iter: It) -> Self

Creates a value from an iterator.

impl<I: Idx, T> Index<I> for IndexVec<I, T>

type Output = T

The returned type after indexing.

fn index(&self, idx: I) -> &Self::Output

Performs the indexing (container[index]) operation.

impl<I: Idx, T> IndexMut<I> for IndexVec<I, T>

fn index_mut(&mut self, idx: I) -> &mut Self::Output

Performs the mutable indexing (container[index]) operation.