Struct KeyedSignal

pub struct KeyedSignal<Key, Val>
where
    Key: 'static + PartialEq + Clone + Debug,
    Val: 'static,
{ /* private fields */ }

A KeyedSignal associates a key with a value. This is typically used for caching, where a key is needed for searching in the cache.

Only when the key changes, when it’s not equal to previous value, the lookup function is called.

The value needs to implement Default, if it happens to be something that doesn’t have a Default implementation, then wrap it in an Option since it implements a Default value of None.

Implementations

impl<Key, Val> KeyedSignal<Key, Val>

where Key: 'static + PartialEq + Clone + Debug, Val: 'static + Clone,

pub fn get(&self) -> Val

pub fn get_key(&self) -> Key

pub fn key(&self) -> Memo<Key>

Trait Implementations

impl<Key, Val> Clone for KeyedSignal<Key, Val>

where Key: 'static + PartialEq + Clone + Debug + Clone, Val: 'static + Clone,

fn clone(&self) -> KeyedSignal<Key, Val>

Returns a duplicate of the value.

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

Performs copy-assignment from source.