using System; using System.Collections.Generic; using System.Linq; using System.Reactive.Disposables; using System.Reactive.Linq; using System.Reactive.Subjects; using System.Text; namespace CommonCodeInPcl { public class Class1 { ISubject subject; IDisposable disposable = Disposable.Empty; public static IObservable GetFoo() { return Observable.Interval(TimeSpan.FromMinutes(1)).Select(_ => 3); } } }