android-tasting-promise-like-interface | sample code when assuming asynchronous processing | Reactive Programming library
kandi X-RAY | android-tasting-promise-like-interface Summary
kandi X-RAY | android-tasting-promise-like-interface Summary
This repository is sample code when assuming asynchronous processing to be done on Android by an interface like method chain of JavaScript Promise. However, if you are in an environment where you can use RxJava etc., you probably do not have much opportunity to use this sample code. If you can not use ( rather Not available/permitted/allowed to use ) useful libraries like RxJava but if you want to write asynchronous processing chains comfortably, please refer to this sample code. RxJava のような便利なライブラリを使わない( むしろ 使える状況でない )けど非同期処理のチェーンを楽に記述したいなら、このサンプルコードを参考にしてください。. This sample code does not use the Lambda, but if your environment permits it, you can use it.
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Top functions reviewed by kandi - BETA
- Creates a promise that completes with the provided callback
- Creates a new promise and returns it as a deferred promise
- Creates a promise and returns it
- Creates a promise with the provided reject callback
- Creates a promise and returns the result
- Creates a new promise and returns the result
- Creates a new Promise and returns it as a promise
- Completes this promise with a single value
- Creates a promise and returns it as a promise
- Creates a deferred promise and returns the result
- Creates a promise that will complete with the supplied callback
- Creates a promise that completes when the future completes
- Creates a promise that will be called when this future completes
- Completes the promise with the given value
- Complete the promise
- Notifies the promise of this promise
- Executes the promise
- Checks if the promise is fulfilled
- Initializes the activity
- Completes the promise
- Initializes the activity
- Executes the promise
- Invoked when the activity is created
- Notify this promise
- Resolves a value
- Atomically sets the Promise to the main thread
android-tasting-promise-like-interface Key Features
android-tasting-promise-like-interface Examples and Code Snippets
Community Discussions
Trending Discussions on Reactive Programming
QUESTION
How can we divide work of consumers over a limited set of resources in RXJS?
I have a Pool
class here (simplified):
ANSWER
Answered 2022-Mar-31 at 12:55So the main thing is you need to share the actual part that does the work, not only the resources.
Here's a solution from me:
https://stackblitz.com/edit/rxjs-yyxjh2?devToolsHeight=100&file=index.ts
QUESTION
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:
...ANSWER
Answered 2022-Mar-23 at 18:10You need a state machine, but you can contain the state so you aren't leaving the monad... Something like this:
QUESTION
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
ANSWER
Answered 2022-Mar-03 at 14:54You can initialize the Mono
in the constructor (assuming it doesn't depend on any request time parameter). Using cache
operator will prevent multiple subscriptions to the source.
QUESTION
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:
...ANSWER
Answered 2022-Jan-20 at 13:05I believe this is a simple use case of the throttle()
operator.
QUESTION
I need to copy date from one source (in parallel) to another with batches.
I did this:
...ANSWER
Answered 2021-Dec-04 at 19:50You need to do your heavy work in individual Publisher
-s which will be materialized in flatMap() in parallel. Like this
QUESTION
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
:
ANSWER
Answered 2021-Dec-06 at 14:53The most obvious problem I see here is that you're using Flow
for single values instead of suspend
functions.
Coroutines makes the single-value use case much simpler by using suspend functions that return plain values or throw exceptions. You can of course also make them return Result
-like classes to encapsulate errors instead of actually using exceptions, but the important part is that with suspend
functions you are exposing a seemingly synchronous (thus convenient) API while still benefitting from asynchronous runtime.
In the provided examples you're not subscribing for updates anywhere, all flows actually just give a single element and complete, so there is no real reason to use flows and it complicates the code. It also makes it harder to read for people used to coroutines because it looks like multiple values are coming, and potentially collect
being infinite, but it's not the case.
Each time you write flow { emit(x) }
it should just be x
.
Following the above, you're sometimes using flatMapMerge
and in the lambda you create flows with a single element. Unless you're looking for parallelization of the computation, you should simply go for .map { ... }
instead. So replace this:
QUESTION
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.
...ANSWER
Answered 2021-Sep-30 at 14:31I'd suggest using dataTableProxy
along with replaceData
to realize the desired behaviour. This is faster than re-rendering the datatable
.
Furthermore, re-rendering the table seems to be messing around with the bindings of the selectInputs
.
Also please note: for this to work I needed to switch to server = TRUE
QUESTION
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:
...ANSWER
Answered 2021-Oct-18 at 16:21The expected way to do that is to actually use the fromIterable
method and provide your List
:
QUESTION
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.
ANSWER
Answered 2021-Oct-07 at 10:20I tend to consider whenever
as the reactive equivalent of for
. (It even supports the LAST
loop phaser for doing something when the tapped Supply
is done
, as well as supporting next
, last
, and redo
like an ordinary for
loop!) Consider this:
QUESTION
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:
...ANSWER
Answered 2021-Oct-05 at 15:18The issue appears to be a Combine bug, as pointed out here. Using Publishers.Sequence
causes the following operator to accumulate every value sent downstream before proceeding.
A workaround is to type-erase the sequence publisher:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install android-tasting-promise-like-interface
You can use android-tasting-promise-like-interface like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the android-tasting-promise-like-interface component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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