Struct VecHeader

pub struct VecHeader<I: Index = usize> {
    pub capacity: I,
    pub length: I,
}

The header associated with each Vec instance.

Fields

capacity: I

The capacity of the buffer.

length: I

The number of items stored in the buffer.

Trait Implementations

impl<T, I: Index> BufferHeader<T> for VecHeader<I>

const EMPTY: Self = _

The header value for a zero-sized buffer.

fn is_empty(&self) -> bool

Determine if this header represents a zero-sized buffer.

fn layout(&self) -> Result<Layout, LayoutError>

Calculate the layout for the associated value.

fn update_for_alloc(&mut self, ptr: NonNull<[u8]>, exact: bool) -> NonNull<T>

Update the header from the result of a new allocation.

impl<I: Clone + Index> Clone for VecHeader<I>

fn clone(&self) -> VecHeader<I>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<I: Debug + Index> Debug for VecHeader<I>

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

Formats the value using the given formatter.

impl<I: Ord + Index> Ord for VecHeader<I>

fn cmp(&self, other: &VecHeader<I>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<I: PartialEq + Index> PartialEq for VecHeader<I>

fn eq(&self, other: &VecHeader<I>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<I: PartialOrd + Index> PartialOrd for VecHeader<I>

fn partial_cmp(&self, other: &VecHeader<I>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<I: Copy + Index> Copy for VecHeader<I>

impl<I: Eq + Index> Eq for VecHeader<I>

impl<I: Index> StructuralPartialEq for VecHeader<I>