reactive-programming

I'm trying to get RxJs to loop over an Observable in my stream until it is in a certain state, then have the stream continue. Specifically I'm converting a synchronous do/while loop to RxJs, but I assume the same answer could be used for a for or while loop as well. I thought I could use doWhile() for this, but it seems like the condition function does not have access to the item in the stream, which seems to defeat the purpose to me. I'm not completely sure what the correct reactive terminology is for what I want, but here is an example of what I am going for: var source = new Rx.Observable

I have created a Rx.Observable from a stream of events: Rx.Observable.fromEvent(recognizeStream, 'data') In which every data event looks like this: { error: null, alternatives: [result1, result2, result3] } I want to pluck every value inside the array of alternatives and merge those into the stream. What operators do I have to look at? As far as I know the flatMap and concatMap could do the job but I don't get the idea from their example. Can somebody explain which operator i should use and provide me with an example? The family of xxxMap() operators all deal with higher-order Observables.

Please, observe the following code snippet: var result = await GetSource(1000).SelectMany(s => getResultAsync(s).ToObservable()).ToList(); The problem with this code is that getResultAsync runs concurrently in an unconstrained fashion. Which could be not what we want in certain cases. Suppose I want to restrict its concurrency to at most 10 concurrent invocations. What is the Rx.NET way to do it? I am enclosing a simple console application that demonstrates the subject and my lame solution of the described problem. There is a bit extra code, like the Stats class and the artificial random

I have a method which accepts Mono as a param. All I want is to get the actual String from it. Googled but didn't find answer except calling block() over Mono object but it will make a blocking call so want to avoid using block(). Please suggest other way if possible. The reason why I need this String is because inside this method I need to call another method say print() with the actual String value. I understand this is easy but I am new to reactive programming. Code: public String getValue(Mono<String> monoString) { // How to get actual String from param monoString //and call print(String)

We have code like this: guiState :: Discrete GuiState guiState = stepperD (GuiState []) $ union (mkGuiState <$> changes model) evtAutoLayout evtAutoLayout :: Event GuiState evtAutoLayout = fmap fromJust . filterE isJust . fmap autoLayout $ changes guiState You can see that evtAutoLayout feeds into guiState which feeds into evtAutoLayout--so there is a cycle there. This is deliberate. Auto layout adjusts the gui state until it reaches an equilibrium and then it returns Nothing and so it should stop the loop. A new model change can kick it off again, of course. When we put this together, though,

I have a parametrized rest call that should be executed every five seconds with different params: Observable<TResult> restCall = api.method1(param1); I need to create an Observable<TResult> which will poll the restCall every 5 seconds with different values for param1. If the api call fails I need to get an error and make the next call in 5 seconds. The interval between calls should be measured only when restCall is finished (success/error). I'm currently using RxJava, but a .NET example would also be good. James World Introduction First, an admission, I'm a .NET guy, and I know this approach

I'm trying to find examples of WebClient use. My goal is to use Spring 5 WebClient to query a REST service using https and self signed certificate Any example ? See example of use insecure TrustManagerFactory that trusts all X.509 certificates (including self-signed) without any verification. The important note from documentation: Never use this TrustManagerFactory in production. It is purely for testing purposes, and thus it is very insecure. @Bean public WebClient createWebClient() throws SSLException { SslContext sslContext = SslContextBuilder .forClient() .trustManager