Promises and Watched Variables for Futures

Promises

Promises are future values. They will only resolve once. This crate gives an implementation of Promises to work with Futures and Tokio

Watched Variables

Watched variables are variables that will emit a signal upon being altered.

This crate offers an RAII implementation of watched variables, to work with Futures and Tokio.

In this case, the signal is a futures::Stream that will return a clone of the new value of the watched variable whenever it is mutated.

This crate will notify the VariableWatched obtained from a WatchedVariable whenever one of its accessors (obtained through lock()) is dropped. If said accessor has been mutably derefenced, then the WatchedVariable will be considered to have been mutated.