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There are two observables: the first named activator emits booleans. The second named signaler emits void events. There's a function f() which must be called under the next conditions:

If the last event from activator is true, and event from signaler comes, call f(). Otherwise (the last activator's event is false, or activator has not yet emitted anything), "remember" that signaler sent the event. As soon as activator emits true, call f() and clear "remembered" flag.

Example:

We are using spring webflux (project reactor), as part of the requirement we need to call one API from our server.

For the API call, we need to cache the response. So we are using Mono.cache operator.

It caches the response Mono and the next time the same API call happens, it will get it from the cache. Following is example implementation

I would like to combine two observables in such a way that

• I mirror at most 1 value from the source observable (same moment it arrives),
• Then ignore its subsequent values until the notifier observable emits;
• Then, I allow to mirror at most 1 more value from the source;
• After which I again ignore elements until the notifier observable emits
• etc.

Source:

I need to copy date from one source (in parallel) to another with batches.

I did this:

Context

I started working on a new project and I've decided to move from RxJava to Kotlin Coroutines. I'm using an MVVM clean architecture, meaning that my ViewModels communicate to UseCases classes, and these UseCases classes use one or many Repositories to fetch data from network.

Let me give you an example. Let's say we have a screen that is supposed to show the user profile information. So we have the UserProfileViewModel:

I am trying to create a table (with DT, pls don't use rhandsontable) which has few existing columns, one selectinput column (where each row will have options to choose) and finally another column which will be populated based on what user select from selectinput dropdown for each row.

in my example here, 'Feedback' column is the user dropdown selection column. I am not able to update the 'Score' column which will be based on the selection from 'Feedback' column dropdown.

I'm receiving a request through a rest controller method with an object that I'm then passing to a method in the service layer.

The object in this request contains a list as follows:

The following code attempts to react to one Supply and then, based on the content of some message, change its mind and react to messages from a different Supply. It's an attempt to provide similar behavior to Supply.migrate but with a bit more control.

I'm trying to use Combine to do several millions concurrent request through the network. Here is a mock up of the naive approach I'n using: