Trait FlatMapInPlaceVec 

pub unsafe trait FlatMapInPlaceVec {
    type Elem;

    // Required methods
    fn len(&self) -> usize;
    unsafe fn set_len(&mut self, len: usize);
    fn as_ptr(&self) -> *const Self::Elem;
    fn as_mut_ptr(&mut self) -> *mut Self::Elem;
    fn insert(&mut self, idx: usize, elem: Self::Elem);
}

A vec-like type must implement these operations to support flat_map_in_place.

Safety

The memory safety of the unsafe block in flat_map_in_place relies on impls of this trait implementing all the operations correctly.

Required Associated Types

type Elem

Required Methods

fn len(&self) -> usize

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

fn as_ptr(&self) -> *const Self::Elem

fn as_mut_ptr(&mut self) -> *mut Self::Elem

fn insert(&mut self, idx: usize, elem: Self::Elem)

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<T> FlatMapInPlaceVec for Vec<T>

type Elem = T

fn len(&self) -> usize

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

fn as_ptr(&self) -> *const Self::Elem

fn as_mut_ptr(&mut self) -> *mut Self::Elem

fn insert(&mut self, idx: usize, elem: Self::Elem)

impl<T> FlatMapInPlaceVec for ThinVec<T>

type Elem = T

fn len(&self) -> usize

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

fn as_ptr(&self) -> *const Self::Elem

fn as_mut_ptr(&mut self) -> *mut Self::Elem

fn insert(&mut self, idx: usize, elem: Self::Elem)

impl<T, const N: usize> FlatMapInPlaceVec for SmallVec<[T; N]>

type Elem = T

fn len(&self) -> usize

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

fn as_ptr(&self) -> *const Self::Elem

fn as_mut_ptr(&mut self) -> *mut Self::Elem

fn insert(&mut self, idx: usize, elem: Self::Elem)

Implementors