Struct OfferCell 

pub struct OfferCell<T> { /* private fields */ }

A data container that can offer optional ownership of its stored information

Implementations

impl<T> OfferCell<T>

pub fn empty() -> Self

Returns an empty cell

pub fn new(item: T) -> Self

Returns a new cell that stores item

pub fn is_empty(&self) -> bool

Returns true if the cell is empty

pub fn item(&self) -> Option<&T>

Returns a reference to the stored item

pub fn item_mut(&mut self) -> Option<&mut T>

Returns a mutable reference to the stored item

pub fn take(&mut self) -> Option<T>

Returns the stored data leaving nothing in its place

pub fn offer(&mut self) -> Option<Offering<'_, T>>

Offers optional ownership of the stored data as a Offering item

pub fn insert_offer(&mut self, item: T) -> Offering<'_, T>

Inserts item into the cell and returns the item as an offering

pub fn offer_or_insert(&mut self, insert: impl FnMut() -> T) -> Offering<'_, T>

Inserts data if there is none currently, then returns the stored data

pub fn entry(&mut self) -> OfferEntry<'_, T>

Returns an Offering if there is one. Otherwise returns an EmptyOffering.

Trait Implementations

impl<T> Default for OfferCell<T>

fn default() -> Self

Returns the “default value” for a type.