Rx whose dependencies are set dynamically at runtime when
evaluated, and may change again any time it gets re-evaluated
Something that emits pings.
A member of a Scala.
A Propagator is an object which performs a propagation wave over the Scala.
Something that can receive pings and react to them in some way.
A wrapper around
AtomicReference, allowing you to apply "atomic"
transforms to the boxed data by using a Compare-And-Set retry loop.