Struct rustc_data_structures::thin_vec::ThinVec

pub struct ThinVec<T>(Option<Box<Vec<T>>>);

A vector type optimized for cases where this size is usually 0 (cf. SmallVector). The Option<Box<..>> wrapping allows us to represent a zero sized vector with None, which uses only a single (null) pointer.

Implementations

impl<T> ThinVec<T>

pub fn new() -> Self

Trait Implementations

impl<T: Clone> Clone for ThinVec<T>

pub fn clone(&self) -> ThinVec<T>

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug> Debug for ThinVec<T>

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

Formats the value using the given formatter.

impl<T, __D: Decoder> Decodable<__D> for ThinVec<T> where
    T: Decodable<__D>, 

pub fn decode(__decoder: &mut __D) -> Result<Self, <__D as Decoder>::Error>

impl<T> Default for ThinVec<T>

pub fn default() -> Self

Returns the "default value" for a type.

impl<T> Deref for ThinVec<T>

type Target = [T]

The resulting type after dereferencing.

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

Dereferences the value.

impl<T> DerefMut for ThinVec<T>

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

Mutably dereferences the value.

impl<T, __E: Encoder> Encodable<__E> for ThinVec<T> where
    T: Encodable<__E>, 

pub fn encode(&self, __encoder: &mut __E) -> Result<(), <__E as Encoder>::Error>

impl<T> Extend<T> for ThinVec<T>

pub fn extend<I: IntoIterator<Item = T>>(&mut self, iter: I)

Extends a collection with the contents of an iterator.

pub fn extend_one(&mut self, item: T)

🔬 This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

pub fn extend_reserve(&mut self, additional: usize)

🔬 This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.

impl<T> From<Vec<T>> for ThinVec<T>

pub fn from(vec: Vec<T>) -> Self

Performs the conversion.

impl<T: HashStable<CTX>, CTX> HashStable<CTX> for ThinVec<T>

pub fn hash_stable(&self, hcx: &mut CTX, hasher: &mut StableHasher)

impl<T> Into<Vec<T>> for ThinVec<T>

pub fn into(self) -> Vec<T>

Performs the conversion.