rxrs Reactive Extensions Library for Rust. This is a work in progress library. Do not use it for production environments. Observable Create For creating new Observable instances, the library provides a number of creation operators: of: creates a finite number of observables with a defined value: let observable = of(&[1, 2, 3]); interval: creates an infinite observable that emits sequential numbers every specified interval of time: let observable = interval(1000); // every 1000 ms (1s)