Struct crayon::utils::handle_pool::HandlePool

pub struct HandlePool { /* fields omitted */ }

HandlePool manages the manipulations of a Handle collection, which are created with a continuous index field. It also have the ability to find out the current status of a specified Handle.

Methods

impl HandlePool

fn new() -> HandlePool

Constructs a new, empty HandlePool.

fn with_capacity(capacity: usize) -> HandlePool

Constructs a new HandlePool with the specified capacity.

fn create(&mut self) -> Handle

Creates a unused Handle.

fn is_alive<T>(&self, handle: T) -> bool where
    T: Borrow<Handle>, 

Returns true if this Handle was created by HandlePool, and has not been freed yet.

fn free<T>(&mut self, handle: T) -> bool where
    T: Borrow<Handle>, 

Recycles the Handle index, and mark its version as dead.

fn free_at(&mut self, index: usize) -> Option<Handle>

Recycles the Handle index, and mark its version as dead.

fn len(&self) -> usize

Returns the total number of alive handle in this HandlePool.

fn iter(&self) -> HandleIter

Returns an iterator over the HandlePool.