Struct alloc::vec::PlaceBack

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

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

struct name and placement protocol are subject to change

[−] Expand description

A place for insertion at the back of a Vec.

See Vec::place_back for details.

Trait Implementations

impl<'a, T: Debug + 'a> Debug for PlaceBack<'a, T>

fn fmt(&self, __arg_0: &mut Formatter) -> Result[−]

Formats the value using the given formatter.

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

type Place = PlaceBack<'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) -> Self[−]

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

Creates a fresh place from self.

impl<'a, T> Place<T> for PlaceBack<'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.

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

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.