RxSwift | Reactive Programming in Swift | Reactive Programming library
kandi X-RAY | RxSwift Summary
kandi X-RAY | RxSwift Summary
Rx is a generic abstraction of computation expressed through Observable interface, which lets you broadcast and subscribe to values and other events from an Observable stream. RxSwift is the Swift-specific implementation of the Reactive Extensions standard. While this version aims to stay true to the original spirit and naming conventions of Rx, this projects also aims to provide a true Swift-first API for Rx APIs. Cross platform documentation can be found on ReactiveX.io. Like other Rx implementation, RxSwift's intention is to enable easy composition of asynchronous operations and streams of data in the form of Observable objects and a suite of methods to transform and compose these pieces of asynchronous work. KVO observation, async operations, UI Events and other streams of data are all unified under abstraction of sequence. This is the reason why Rx is so simple, elegant and powerful.
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QUESTION
I have an input that accept string, and store it in local data. My use case is when I enter an email, the user must wait for 2 minute for requesting send email verification. But when I enter a different email name, I can't make the timer reset when the last email I enter is still countdown. I'm using RxSwift for timer, I don't know how to invalidate the timer in RxSwift.
This is what I came so far to reset the timer when user enters new email
...ANSWER
Answered 2022-Apr-01 at 23:25The key is using flatMapLatest to cancel the previous timer and start up a new one.
Based on your description, here is what you need:
QUESTION
I've been practicing RxSwift recently, but I'm running into a problem in making network requests.
The question is how can I make consecutive network requests .
For example, in Github api, I should use https://api.github.com/user/starred/{\owner}/{\repository_name} to check if the user starred the repository or not.
It should be sent after I received the data requested but I'm having a hard time to implement this.
Here's what I've tried so far:
...ANSWER
Answered 2022-Mar-23 at 14:17This gets the starred status:
QUESTION
I get the topic but it still countdown the time to second. I want to count down timer up to 0.1s How can i solve that? The code i follow: countdown timer by `RxSwift`
Thanks every one
...ANSWER
Answered 2022-Mar-15 at 12:08Use .milliseconds(100) instead of .seconds(1)
QUESTION
In RxSwift, how can I observe a BehaviorRelay just before a change happens?
I tried:
...ANSWER
Answered 2022-Mar-10 at 14:32The short answer is, you can't. The work around depends on why you want the previous value. If, for example, you want to compare the previous value to the new value, you can do that with .scan. An operator like this would do it:
QUESTION
I wrote some tests for my ViewModel. I use RxSwift in this project. I have never before write unit tests, so i want to ask you about correctness of them. What can I do better next time? It is little difficult for me when I write tests while I use RxSwift. All tests passed, but I don't know if they are "good tests". Thanks for your help.
ViewModel:
...ANSWER
Answered 2022-Feb-10 at 22:10An easy way to check the correctness of your tests is to change the system under test and see if your tests flag the error. If they don't, then that is a hole in your tests. For example, the following view model will pass your tests:
QUESTION
I have 2 view models TransferViewModel which has the respective TransferViewController for making Local Transactions from a model LocalTransactionRequest and i have BankTransferViewModel which has a model BankTransactionsRequest, the first one is working but the second one is not, both view controllers are supposed to perform segue to another view controller ConfirmViewController, but the second one (BankTransferViewController) is not working
[This one is TransferViewController][1]
...ANSWER
Answered 2022-Feb-03 at 08:49Make sure the following points are valid for your performSegue to work in BankTransferViewController:
- The BankTransferViewController has a segue pointing to ConfirmViewController.
- The identifier in your
performSegue(withIdentifier: yourIdentifier, sender: yourModel)is the exact same identifier as the segue in storyboard that is connecting the two view controllers. - Since you are using it inside the
viewModel.transferRequest.asObservable().subscribe(onNext:code, make sure you are emmiting a value toviewModel.transferRequestsomewhere in the code. Otherwise,performSeguewill never get called. - Since you have this check
if let bank = bankRequest{before usingperformSegue, make sure the transferRequest value you emmit is not nil.
QUESTION
I am using the Cocoapod , RxCocoa , RxSwift and Git.
When I run the "git status", some warning will show:
(use "git restore ..." to discard changes in working directory)
modified: Pods/RxCocoa.d
modified: Pods/RxRelay.d
modified: Pods/RxSwift.d
I remember "Pod/*.a Pod/.dia" show too.
How to prevent this in the future?
Must I add something into the .gitignore file??
===================== Edit again:
I viewed the .gitignore a few minutes ago.
My project doesn't ignore the Pods.
My project ignore the files in this way:
ANSWER
Answered 2021-Dec-28 at 11:21You could ignore Pods altogether:
QUESTION
The TextCode has a UItextField on the right side.
The PassCode has a UItextField on the right side.
Use RxSwift to implement the following logic.
SelectAlertItem AlertViewControll sheet style has three options: A, B, C. Now I can implement the selection logic.
I don't know how to use RxSwift to implement the following logic.
The following is my key logic: Only when the selectedItem is B. TextCodeTextField text must be copied to PassCodeTextField at the end of editing.
In other word, SelectType is B, TextCodeTextField input "11111" and editingend, then PassCodeTextField will be "11111".
How to use RxSwift to implement the following logic with UITextfield?
...ANSWER
Answered 2021-Dec-22 at 15:01Here's how to do it using my Cause Logic Effect architecture (with notes):
QUESTION
I'm quite new to RxSwift and I trying to create some unit tests. In this case I want to test If the fetch objects from Realtime database Firebase is occurring correctly.
...ANSWER
Answered 2021-Dec-17 at 20:21I suggest that you move the logic out of the Observable.create so you can test it independently. Something like this:
QUESTION
I am starting to use RxSwift to make the service call. This was my old code:
...ANSWER
Answered 2021-Dec-08 at 00:53You can have getTimeDeposits() return an Observable as well and handle the deserialization in a map closure. A couple of other things.
- RxCocoa already has a method on
URLSessionso you don't need to write your own. - I suggest reducing the amount of code you have in a function that makes the network request. You want to be able to test your logic for making the request without actually making it.
Something like this:
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