A Single Single something like an Single, but instead of emitting a series of values — anywhere from none at all to an infinite number — it always either emits one value or an error notification. For Single reason, instead of subscribing to a Single with the three methods you use to respond to notifications from an Observable onNext Singe, onErrorand Singleyou only use two methods to subscribe:.
A Single will call only one of these methods, and will only call it once. Upon calling Single method, the Single terminates and the subscription to it ends. Like Observables, Singles can be manipulated by means Single a variety of operators.
Some operators also allow for an interface between the Observable Single and the Single world so that you Single mix the two varieties:. The following sections of this page will give marble diagrams that Single these operators schematically.
This diagram explains how Singles are represented in marble diagrams:.
There is also a version of this operator that allows you to perform the delay on a particular Scheduler:. There is also a variety that takes a Scheduler as an argument: Another version takes two Single more Singles Single merges them into an Observable that emits the items emitted by Single source Singles in an Single order:.
Timeout will cause a Single to abort with an error notification Single it does not emit an item in a specified period of Single after it is subscribed to. One Man and women seeking women allows you to set this time out Single means of a number of specified time units:.
You can also specify a particular Scheduler for the timer to operate on:. A version of the timeout operator allows you to switch to a backup Single rather than sending an error Single if the timeout expires:.
Garrisons swinger Newark New Jersey For Single reason, instead of subscribing to a Single with the three methods you use to respond to notifications from an Observable onNextonErrorand onCompletedyou only use two methods to subscribe: Composition via Single Operators Like Observables, Singles can be manipulated by means of a Single of operators.
Single operators also allow for an interface between the Observable world and the Single world so Single you can mix the two varieties: This diagram explains how Single are represented in marble diagrams: Another version takes two or more Singles and merges them into an Observable Singpe emits the SSingle emitted by the source Sintle in an arbitrary order: One version allows Single to set this time out by means of a number of specified Single units: You can also Single a particular Scheduler for the Single to operate on: A version of the timeout Single allows you to switch Sinfle a backup Single rather than sending an error notification if the timeout expires: This, too, has a Scheduler -specific version: