Struct Subscription 

pub struct Subscription<Msg> { /* private fields */ }

A set of continuous message sources, possibly empty.

Implementations

impl<Msg: Send + 'static> Subscription<Msg>

pub fn none() -> Self

No subscription at all.

pub fn batch(subscriptions: impl IntoIterator<Item = Subscription<Msg>>) -> Self

Groups several subscriptions together.

pub fn every( interval: Duration, make: impl Fn(Instant) -> Msg + Send + 'static, ) -> Self

Emits a message every interval; the tick’s Instant is passed along.

pub fn every_keyed( key: u64, interval: Duration, make: impl Fn(Instant) -> Msg + Send + 'static, ) -> Self

Subscription::every under an identity of the caller’s: two timers of the same period are two subscriptions when their keys differ, and one that keeps its key from one cycle to the next keeps running.

pub fn is_empty(&self) -> bool

true when there is no subscription.

pub fn ids(&self) -> Vec<u64>

The subscriptions’ ids, for inspection and testing.