Struct std::collections::vec_deque::PlaceFront

#[must_use = "places do nothing unless written to with `<-` syntax"]
pub struct PlaceFront<'a, T> where
    T: 'a,  { /* fields omitted */ }

🔬 This is a nightly-only experimental API. (collection_placement #30172)

struct name and placement protocol are subject to change

A place for insertion at the front of a VecDeque.

See VecDeque::place_front for details.

Trait Implementations

impl<'a, T> InPlace<T> for PlaceFront<'a, T>

type Owner = &'a mut T

🔬 This is a nightly-only experimental API. (placement_new_protocol #27779)

Owner is the type of the end value of PLACE <- EXPR

Important traits for &'a mut I

impl<'a, I> Iterator for &'a mut I where
    I: Iterator + ?Sized,  type Item = <I as Iterator>::Item;impl<'a, R: Read + ?Sized> Read for &'a mut Rimpl<'a, W: Write + ?Sized> Write for &'a mut W

unsafe fn finalize(self) -> &'a mut T

🔬 This is a nightly-only experimental API. (placement_new_protocol #27779)

Converts self into the final value, shifting deallocation/cleanup responsibilities (if any remain), over to the returned instance of Owner and forgetting self.

impl<'a, T> Placer<T> for PlaceFront<'a, T>

type Place = PlaceFront<'a, T>

🔬 This is a nightly-only experimental API. (placement_new_protocol #27779)

Place is the intermediate agent guarding the uninitialized state for Data.

fn make_place(self) -> PlaceFront<'a, T>

🔬 This is a nightly-only experimental API. (placement_new_protocol #27779)

Creates a fresh place from self.

impl<'a, T> Debug for PlaceFront<'a, T> where
    T: 'a + Debug, 

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.

impl<'a, T> Place<T> for PlaceFront<'a, T>

fn pointer(&mut self) -> *mut T

🔬 This is a nightly-only experimental API. (placement_new_protocol #27779)

Returns the address where the input value will be written. Note that the data at this address is generally uninitialized, and thus one should use ptr::write for initializing it.