Enum rate_common::memory::SmallVector

pub enum SmallVector<T> {
    Empty,
    One(T),
    Many(Vector<T>),
}

A Vector with small-buffer-optimization

Variants

Empty

Empty variant, no need to allocate anything (same as Vector)

One(T)

A SmallVector with a single element that is stored in place

Many(Vector<T>)

Fallback to a plain Vector, for two or more elements

Methods

impl<T> SmallVector<T>

pub fn len(&self) -> usize

See Vec::len().

pub fn is_empty(&self) -> bool

See Vec::is_empty().

impl<T: Copy + Default> SmallVector<T>

pub fn singleton(value: T) -> SmallVector<T>

Constructs a new SmallVector containing a single element.

pub fn from_vector(vector: Vector<T>) -> SmallVector<T>

Convert a Vector to a SmallVector.

pub fn first(&self) -> Option<T>

See Vec::first().

pub fn push(&mut self, new_value: T)

See Vec::push().

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

See Vec::swap_remove().

Note: this currently only supports being called with index=0 because that's all we need for parsing.

Trait Implementations

impl<T: Copy + Default> Default for SmallVector<T>

fn default() -> SmallVector<T>

Returns the "default value" for a type.

impl<T: Clone> Clone for SmallVector<T>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: PartialEq> PartialEq<SmallVector<T>> for SmallVector<T>

fn eq(&self, other: &SmallVector<T>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &SmallVector<T>) -> bool

This method tests for !=.

impl<T> Index<usize> for SmallVector<T>

type Output = T

The returned type after indexing.

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

Performs the indexing (container[index]) operation.

impl<T> IndexMut<usize> for SmallVector<T>

fn index_mut(&mut self, index: usize) -> &mut Self::Output

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

impl<T: Debug> Debug for SmallVector<T>

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

Formats the value using the given formatter.

impl<T: Copy + Default> FromIterator<T> for SmallVector<T>

fn from_iter<I: IntoIterator<Item = T>>(iter: I) -> SmallVector<T>

Creates a value from an iterator.