Utility operators

The operators listed here provide usual operations when working with observables. Some of them have already been covered in the previous chapters. They are the following ones:

Operator	Description	Chapter
observe_on	Changes the scheduler being used on the following operators	5
subscribe_on	Sets the scheduler being used by the root observable	5

The delay operator

The delay operator delays the emission of the source observable items by a specified time. The following figure shows the marble diagram of this operator:

Figure 9.17: The delay operator

Its prototype is the following:

Observable.delay(self, duetime, scheduler=None)

Here, the duetime parameter is the delay to apply in milliseconds. The...