reactive-programming

I need to parse a stream of serial data coming from a test instrument, and this seems to be an excellent application for Reactive Extensions. The protocol is very simple...each "packet" is a single letter followed by numeric digits. The number of numeric digits is fixed for each packet type, but can vary between packet types. e.g. ...A1234B123456C12... I am trying to break this up into an Observable of Strings, e.g. "A1234" "B123456" "C12" ... Thought this would be simple, but don't see the obvious way to approach this (I have some experience with LINQ, but am new to Rx). Here's the code I

I would like to implement a certain type of throttling of events in reactive-banana. It should work such that an event is not let through if arrives at less then delta seconds from the last event that passed through. If it is not let through then it is stored and is fired after delta seconds from the last fired event. Below is a program that implements this for lists of time stamped numbers. Would it be possible to translate this to reactive-banana ? Also, in reactive-banana how do I fire an event x seconds after some other event comes in ? module Main where import Data.List -- 1 second

Let's say I have two classes, where you can observe over some observables. First example, with public subject: class EventsPub { public readonly onEnd = new Subject<void>(); } Second example, with private subject and registering method: class EventsPriv { private readonly endEvent = new Subject<void>(); public onEnd(cb: () => void): Subscription { return this.endEvent.subscribe(cb); } } The first example is somehow unsafe because anyone can call eventsPub.endEvent.next() from outside the class and introduce side effects, however, comparing to example 2 It allows for pipes, which is a big plus

I have 3 EditText fields and I have created 3 observables for these fields. Observable<CharSequence> o1 = RxTextView.textChanges(field1); Observable<CharSequence> o2 = RxTextView.textChanges(field2); Observable<CharSequence> o3 = RxTextView.textChanges(field3); I want to enable a button when all these three fields has some value in it. user can enter values in any order in the fields. How can i do that? EDIT I used zip to achieve that. Observable<CharSequence> o1 = RxTextView.textChanges(field1); Observable<CharSequence> o2 = RxTextView.textChanges(field2); Observable<CharSequence> o3 =

I have an RX producer that creates a stream of strings like so (simplified version of the real stream): A1 A2 A3 B1 B2 C1 C2 C3 C4 C5 C6.... The stream is endless, but ordered. So after the strings that start with A run out, B starts. When B runs out, C starts... when Z run out, we move to AA1 etc. There's an unknown number of A 's, B 's etc, but it's typically 10-30 instances per letter. I'm looking for a way to divide this stream into blocks of all A's: A1 A2 A3 , all B's: B1 B2 , all C's: C1 C2 C3 C4 C5 C6 etc. Each block can be either an observable (which I'll turn into a list) or simply a

I am trying to filter the list on the basis of it's property. For example, Sensors class has a property isActive and I want to get all the objects with isActive as true but I am unable to do it. I tried different ways but I didn't find the solution. Can someone help me to do it? Here is my code: mCompositeDisposable.add( fcService.getStationList() .subscribeOn(Schedulers.io()) .flatMap( stations -> { return fcService.getSensorList(stations.get(0).getName().getOriginal()); }) .subscribe(this::handleSensors, this::handleError) ); First, you need to emit each item from the List individually. That

I have two Observables . Observable<A> getAObservable() Returns Observable of A Observable<B> getBObservable(A) Returns Observable of 'B'. Here Observable<A> should execute before Observable<B> so that it can pass its result A to getBObservable() method. Now once Observable<B> completes I need to combine the result of these observable and Observable<AB> should returns. Options Tried: Take Observable<A> and apply flatMap on it so that it transform result in B . Now at this point I am not having access to A data. Hence I can't return Observable I can use zip so that once I get the result of both

As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 6 years ago . So I'm doing a fairly involved javascript/html client with lots of ajax calls and other involvements of callback-ism. I'm entertaining the thought of using Fay for this purpose. I'm aware of Elm. Tried it and liked the FRP elements. Now