Struct IndexMap

pub struct IndexMap<I: Into<usize> + From<usize>, V> { /* private fields */ }

Stores index based maps.

Implementations

impl<I: Into<usize> + From<usize>, V> IndexMap<I, V>

pub fn is_empty(&self) -> bool

Returns if the index map contains no elements.

pub fn len(&self) -> usize

Returns the number of elements.

pub fn get(&self, index: I) -> Option<&V>

Gets an entry by index.

pub fn get_mut(&self, index: I) -> Option<&V>

Gets a mutable entry by index.

pub fn iter(&self) -> Iter<'_, I, V>

Returns an iterator over the index map.

Trait Implementations

impl<I: Into<usize> + From<usize>, V> Default for IndexMap<I, V>

fn default() -> Self

Returns the “default value” for a type.

impl<I: Into<usize> + From<usize>, V> Index<I> for IndexMap<I, V>

type Output = V

The returned type after indexing.

fn index(&self, index: I) -> &V

Performs the indexing (container[index]) operation.

impl<I: Into<usize> + From<usize>, V> IndexMut<I> for IndexMap<I, V>

fn index_mut(&mut self, index: I) -> &mut V

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

impl<'a, I: Into<usize> + From<usize>, V> IntoIterator for &'a IndexMap<I, V>

type Item = (I, &'a V)

The type of the elements being iterated over.

type IntoIter = Iter<'a, I, V>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Iter<'a, I, V>

Creates an iterator from a value.

impl<I: Into<usize> + From<usize>, V> IntoIterator for IndexMap<I, V>

type Item = (I, V)

The type of the elements being iterated over.

type IntoIter = IntoIter<I, V>

Which kind of iterator are we turning this into?

fn into_iter(self) -> IntoIter<I, V>

Creates an iterator from a value.