observable

来源： https://stackoverflow.com/questions/63605677/how-does-rxjs-reduce-in-case-there-is-no-matching-accumulator

问题 I have two angular components and need to pass in an object from one component to another on a click. My first component has the following showEventDetails(event: Event) { this.eventsService.sendEventDetail(event) } Here Event is my custom model object: export class Event { id: number title: string description: string url: string date: string } The event service file is as follows: export class EventsService { eventDetailSubject = new Subject<any>(); constructor() { } sendEventDetail(event:

问题 I think that it is a cold observable (as is the default) but couldn't find a reference to it either in the code or the documentation. (Sorry if this is asked already, couldn't find something) 回答1: ;TLDR It's a hot observable because both ActionSubject and ReducerManager extend BehaviorSubject which is a hot observable. As stated in the diagram at https://ngrx.io/guide/store The store receives events from Actions, and Actions are processed via Reducers. Both ActionSubject (the observable of

问题 I think that it is a cold observable (as is the default) but couldn't find a reference to it either in the code or the documentation. (Sorry if this is asked already, couldn't find something) 回答1: ;TLDR It's a hot observable because both ActionSubject and ReducerManager extend BehaviorSubject which is a hot observable. As stated in the diagram at https://ngrx.io/guide/store The store receives events from Actions, and Actions are processed via Reducers. Both ActionSubject (the observable of

问题 I think that it is a cold observable (as is the default) but couldn't find a reference to it either in the code or the documentation. (Sorry if this is asked already, couldn't find something) 回答1: ;TLDR It's a hot observable because both ActionSubject and ReducerManager extend BehaviorSubject which is a hot observable. As stated in the diagram at https://ngrx.io/guide/store The store receives events from Actions, and Actions are processed via Reducers. Both ActionSubject (the observable of

问题 I'm looking for a plain English explanation of what an Observable is in RXJS. What it can be used for, and any useful explanations either video links, tutorials, use cases, examples, or anything really. So far nothing I have found on Udemy, Todd Motto, Youtube, Angular official website has clicked with me and I just want a basic explanation of the above if that is possible. So far all I know is that you can subscribe to them with an observer. Is it just another kind of variable? Thanks in

问题 I'm looking for a plain English explanation of what an Observable is in RXJS. What it can be used for, and any useful explanations either video links, tutorials, use cases, examples, or anything really. So far nothing I have found on Udemy, Todd Motto, Youtube, Angular official website has clicked with me and I just want a basic explanation of the above if that is possible. So far all I know is that you can subscribe to them with an observer. Is it just another kind of variable? Thanks in

问题 I'm looking for a plain English explanation of what an Observable is in RXJS. What it can be used for, and any useful explanations either video links, tutorials, use cases, examples, or anything really. So far nothing I have found on Udemy, Todd Motto, Youtube, Angular official website has clicked with me and I just want a basic explanation of the above if that is possible. So far all I know is that you can subscribe to them with an observer. Is it just another kind of variable? Thanks in

问题 I'm looking for a plain English explanation of what an Observable is in RXJS. What it can be used for, and any useful explanations either video links, tutorials, use cases, examples, or anything really. So far nothing I have found on Udemy, Todd Motto, Youtube, Angular official website has clicked with me and I just want a basic explanation of the above if that is possible. So far all I know is that you can subscribe to them with an observer. Is it just another kind of variable? Thanks in

问题 I found this question SwiftUI: Putting multiple BindableObjects into Envionment the answer said environmentObject(ObservableObject) returns modified view, therefore I can make call chain for multiple environmentObject. like let rootView = ContentView() .environmentObject(firstBindable) .environmentObject(secondBindable) and I wonder what is result if firstBindable and secondBindable are same type. how .environmentObject() knows what is exect value which is a programmer intended to set between