Struct RetainVec 

pub struct RetainVec<T> {
    inner: Vec<T>,
    len: usize,
}

A resizable vector that retains inner elements upon resizing.

Fields

inner: Vec<T>

len: usize

Implementations

impl<T: Clear> RetainVec<T>

pub fn new() -> Self

Create an empty RetainVec.

pub fn with_len(len: usize, init: impl FnMut() -> T) -> Self

Create a RetainVec with len initialized entries.

pub fn len(&self) -> usize

Return the length.

pub fn is_empty(&self) -> bool

Return true if the vector is empty.

pub fn as_slice(&self) -> &[T]

Return the entries as a slice.

pub fn as_mut_slice(&mut self) -> &mut [T]

Return the entries as a mutable slice.

pub fn iter_mut(&mut self) -> IterMut<'_, T>

Iterate mutably over active entries.

pub fn clear(&mut self)

Clear the elements in this vector.

pub fn resize_with(&mut self, new_len: usize, init: impl FnMut() -> T)

Resize the vector.

Trait Implementations

impl<T: Debug> Debug for RetainVec<T>

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

Formats the value using the given formatter.

impl<T: Clear> Default for RetainVec<T>

fn default() -> Self

Returns the “default value” for a type.

impl<T> Index<usize> for RetainVec<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 RetainVec<T>

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

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