Enum IndexVec

pub enum IndexVec {
    // some variants omitted
}

A vector of indices.

Multiple internal representations are possible.

Implementations

impl IndexVec

pub fn len(&self) -> usize

Returns the number of indices

pub fn is_empty(&self) -> bool

Returns true if the length is 0.

pub fn index(&self, index: usize) -> usize

Return the value at the given index.

(Note: we cannot implement std::ops::Index because of lifetime restrictions.)

pub fn into_vec(self) -> Vec<usize>

Return result as a Vec<usize>. Conversion may or may not be trivial.

pub fn iter(&self) -> IndexVecIter<'_>

Iterate over the indices as a sequence of usize values

Trait Implementations

impl Clone for IndexVec

fn clone(&self) -> IndexVec

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for IndexVec

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

Formats the value using the given formatter.

impl From<Vec<u32>> for IndexVec

fn from(v: Vec<u32>) -> Self

Converts to this type from the input type.

impl From<Vec<usize>> for IndexVec

fn from(v: Vec<usize>) -> Self

Converts to this type from the input type.

impl IntoIterator for IndexVec

fn into_iter(self) -> IndexVecIntoIter

Convert into an iterator over the indices as a sequence of usize values

type Item = usize

The type of the elements being iterated over.

type IntoIter = IndexVecIntoIter

Which kind of iterator are we turning this into?

impl PartialEq for IndexVec

fn eq(&self, other: &IndexVec) -> 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.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 32 bytes

Size for each variant:

• U32: 24 bytes
• USize: 24 bytes