CREATE COMPLETABLE PDF

Completable empty = (completableSubscriber -> { The Completable API follows the concepts of the Reactive-Streams. Create, Lift and Transform. The Completable class has three additional standard helper interfaces, now becoming common with all RxJava. Creating a Single. Completable. Creating a Completable. Maybe. Creating a Maybe. RxCocoa traits. Driver. Why is it named Driver; Practical usage example.

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RxJava2 introduces different types of Observables: Flowable, Single, Maybe and Completable.

Observable can emit multiple items. Single, Maybe and Completable are one or no emission of items. Single is an Observable which only emits one item or throws an error. Single emits only one value and applying some of the operator makes no sense.

Method onNext and onComplete of Observable crete been combined to onSucessas the stream has only one single item to emit. Single is like promise in Javascript.

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A promise is an object that may produce a item or throw an error. Typically example is a network call, with retrofit you return an Observable or Flowable.

Clearer RxJava intentions with Single and Completable

There are operators that will allow you to turn it into an Observable such as toObservable. Maybe is similar to Single only difference being that it allows for no emissions as well.

We will see example how to implement this. Completable is only concerned with execution completion whether the task has reach to completion or some error has occurred.

As Completable only concern is completeness it does not have onNext and onSucess method. There are certain ceate where only concern in completion or error. Suppose we update any User model in the app and want to just notify the server about it.

java – How to create Observable out of Runnable? – Stack Overflow

Thanks for reading and if you like the article, remember to clap. Note that if comlletable hold the clap button, you can leave more claps! Sign in Get started. Home Archive About Submit your article. Single, Maybe and Completable. Observable can emit multiple items Single, Maybe and Completable are one or no emission of items.

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Single Single is an Observable which only emits one item or throws an error. Completable Completable is only concerned with execution completion whether the task has reach to completion or some error has occurred. Never miss a story from AndroidPubwhen you sign up for Medium.

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