Struct RequestMap

pub struct RequestMap<K, V> { /* private fields */ }

A type to prevent two async requests from racing the same resource.

Implementations

impl<K, V> RequestMap<K, V>

pub fn new() -> Self

Make a new RequestMap.

impl<K, V> RequestMap<K, V>

where K: Eq + Hash + Clone + Debug, V: Clone,

pub async fn get_or_fetch<FN, F>(&self, key: K, fetch_future_func: FN) -> V

where FN: FnOnce() -> F, F: Future<Output = V> + Send + 'static,

Lock the key if it is missing, or run a future to fetch the resource.

Trait Implementations

impl<K: Debug, V: Debug> Debug for RequestMap<K, V>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<K, V> Default for RequestMap<K, V>

fn default() -> Self

Returns the “default value” for a type.