Trait VecLike 

pub unsafe trait VecLike {
    type T;

    // Required methods
    fn len(&self) -> usize;
    fn capacity(&self) -> usize;
    fn spare_capacity_mut(&mut self) -> &mut [MaybeUninit<Self::T>];
    unsafe fn set_len(&mut self, new_len: usize);

    // Provided method
    fn is_empty(&self) -> bool { ... }
}

Like vec struct trait

Safety

• self.capacity() must be equals self.len() plus self.spare_capacity_mut().len()

Required Associated Types

type T

Required Methods

fn len(&self) -> usize

Vec initialized elements length

fn capacity(&self) -> usize

Vec capacity

fn spare_capacity_mut(&mut self) -> &mut [MaybeUninit<Self::T>]

Vec uninitialized partials

unsafe fn set_len(&mut self, new_len: usize)

This is lower operation

Safety

• new_len must be less than or equal capacity
• old_len..new_len must be initialized

Provided Methods

fn is_empty(&self) -> bool

Return collection is empty

Implementations on Foreign Types

impl<T> VecLike for Vec<T>

type T = T

fn len(&self) -> usize

fn capacity(&self) -> usize

fn spare_capacity_mut(&mut self) -> &mut [MaybeUninit<Self::T>]

unsafe fn set_len(&mut self, new_len: usize)

Implementors

impl<T, V: VecLike<T = T>> VecLike for TailVec<'_, T, V>

type T = T