Trait OffsetContainer

pub trait OffsetContainer<T>: Default + Extend<T> {
    // Required methods
    fn push(&mut self, item: T);
    fn index(&self, index: usize) -> T;
    fn clear(&mut self);
    fn len(&self) -> usize;
    fn reserve(&mut self, additional: usize);
    fn heap_size<F>(&self, callback: F)
       where F: FnMut(usize, usize);

    // Provided method
    fn is_empty(&self) -> bool { ... }
}

A container to store offsets.

Required Methods

fn push(&mut self, item: T)

Accepts a newly pushed element.

fn index(&self, index: usize) -> T

Lookup an index. May panic for invalid indexes.

fn clear(&mut self)

Clear all contents.

fn len(&self) -> usize

Returns the number of elements.

fn reserve(&mut self, additional: usize)

Reserve space for additional elements.

fn heap_size<F>(&self, callback: F)

where F: FnMut(usize, usize),

Heap size, size - capacity

Provided Methods

fn is_empty(&self) -> bool

Returns true if empty.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<T> OffsetContainer<T> for Vec<T>

where T: Copy,

fn push(&mut self, item: T)

fn index(&self, index: usize) -> T

fn clear(&mut self)

fn len(&self) -> usize

fn reserve(&mut self, additional: usize)

fn heap_size<F>(&self, callback: F)

where F: FnMut(usize, usize),

Implementors

impl OffsetContainer<usize> for OffsetOptimized