Trait SizeTracker 

pub trait SizeTracker: Clone {
    const INIT: Self;
    const IS_TRACKING: bool;

    // Required methods
    fn increment(&mut self);
    fn decrement(&mut self);
    fn get(&self) -> usize;
    fn set(&mut self, size: usize);
    fn swap(&mut self, other: &mut Self);
}

Trait for tracking the size of the list.

Required Associated Constants

const INIT: Self

The initial value for the tracker.

const IS_TRACKING: bool

True if this tracker actually tracks the size.

Required Methods

fn increment(&mut self)

Increments the size count.

fn decrement(&mut self)

Decrements the size count.

fn get(&self) -> usize

Returns the current size.

fn set(&mut self, size: usize)

Sets the size count.

fn swap(&mut self, other: &mut Self)

Swaps the size count with another tracker.

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.

Implementors

impl SizeTracker for NonTrackingSize

const INIT: Self = NonTrackingSize

const IS_TRACKING: bool = false

impl SizeTracker for TrackingSize

const INIT: Self

const IS_TRACKING: bool = true