What is the RxSwift variable?
RxSwift: Variables Use value to set a new element to a variable (don’t use onNext(_:) ). Because it wraps a BehaviorSubject, it is created with an initial value and will play its initial value for new subscribers. To access BehaviorSubject variables, call asObservable() . Guaranteed NOT to issue an error.
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What is BehaviorRelay RxSwift?
import RxSwift. /// BehaviorRelay is a wrapper for `BehaviorSubject`. /// /// Unlike `BehaviorSubject`, it cannot terminate with error or completion.
What is the RxSwift driver?
RxSwift: Driver Go from – A single observable that updates the entire UI to bind to and reuse the same observable in the viewController.
What is a PublishSubject?
PublishSubject emits items to currently subscribed watchers and terminal events to current or late watchers.
What is combineLatest?
combineLatest is an operator you want to use when the value depends on the combination of some other Observables. When an element is emitted by any two Observables, combine the last element emitted by each Observable through a specific closure and emit elements based on the results of this closure.
What is the difference between BehaviorSubject and observable?
Observable is a generic, and BehaviorSubject is technically a subtype of Observable because BehaviorSubject is an observable with specific qualities. An observable can be created from Subject and BehaviorSubject using subject. asObservable() .
Where do I find the behavior relay in rxswift?
At the bottom of the code block, you can see two variables that are defined as BehaviorRelay. BehaviorRelay is a type provided by RxSwift. More specifically, it is provided by RxCocoa, so remember to import it in every file that needs it. It’s a good place to start looking at RxSwift observables.
What do you need to know about rxswift?
RxSwift adds the core library which includes Observable, BehaviorRelay, PublishSubject etc. RxDataSources includes reactive libraries related to UITableView and UICollectionView. RxSwiftExt helps to bind observables directly to UI components. We will also add all the libraries for the test targets that we have.
How to use rxswift with MVVM Swift pattern?
In the pod file, you’ll need to add: RxSwift adds the core library, which includes Observable, BehaviorRelay, PublishSubject, etc. RxDataSources includes reactive libraries related to UITableView and UICollectionView. RxSwiftExt helps to bind observables directly to UI components. We will also add all the libraries for the test targets that we have.
Do you need a variable to post an observable in Swift?
Here is an article on the use of Variable (note that Variable is a wrapper around BehaviorSubject). In your case, you already have a cold observable (the network call), so you don’t need a Subject/Variable. All you need to do is post the observable you already have and use play(1) to cache the value.