Swinject | Dependency injection framework for Swift | Dependency Injection library
kandi X-RAY | Swinject Summary
kandi X-RAY | Swinject Summary
[Reviewed by Hound] Swinject is a lightweight [dependency injection] framework for Swift. Dependency injection (DI) is a software design pattern that implements Inversion of Control (IoC) for resolving dependencies. In the pattern, Swinject helps your app split into loosely-coupled components, which can be developed, tested and maintained more easily. Swinject is powered by the Swift generic type system and first class functions to define dependencies of your app simply and fluently.
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QUESTION
I have been working a job that requires me to focus on Dependency Injection. For posterity, I am using this in Swift/SwiftUI, though I believe my lack of understanding is more inherent in the concept than the language.
I have created a Dependency Injection container, which can be used to register and resolve types and components. As such;
...ANSWER
Answered 2021-Feb-06 at 06:15You would need to add an extra register function.
QUESTION
I am using RxSwift and Swinject in my project. The way I bind the inputs / outputs is not exactly the same as in the example given by RxSwift. In RxExample/GitHubSignup, the binding is done in the init()
, right? But I found it difficult to implement because I use Swinject+SwinjectStoryboard to do Dependency Injection to the View Controller. Thus, the init()
is unavailable because the one instantiating the View Models is the Swinject container. So, is there a way to bind the view controller and view model together besides using init()
?
I was thinking that I can maybe use var
instead of let
for the output observables and make a func bind(observables: [Observable])
or something that will do the bindings and transformations from input to output instead. But because they will be vars and not lets, that means it seems like we are permitted to change the bindings throughout the code. Unlike when we just use lets and bind them in the init()
. And also, by using a function instead of the initializer, I have to store the dependencies into a member variable. While if I use the initializer, I can just transform the dependencies inside of a map
or flatMap
.
And also I have another question. Say, if I have this:
...ANSWER
Answered 2020-Dec-08 at 13:35So, is there a way to bind the view controller and view model together besides using
init()
?
Yes there is. Give the view model a function that takes the inputs and returns the outputs.
But because they will be vars and not lets, that means it seems like we are permitted to change the bindings throughout the code.
Don't ever make an Observable (or Subject, or Observer) a var
always use let
Functional Reactive Programming is a functional paradigm so no vars.
So in this case, if the dataProvider returned complete or error, the disposable will be disposed, right? So the scene will be unresponsive because the UI is already unbound. Any idea how to fix that?
Yes and no. If the dataProvider emits a completed event, that will not dispose because the flatMapLatest
only disposes if all of its inputs complete. Since the refreshTap
has not yet completed, the flatMapLatest
will continue to accept events from it and call it's closure for each one.
If the dataProvider emits an error event, that will dispose because and error event short circuits the chain. However, since you use .asDriver()
on your dataProvider, the Driver returned from the closure can't possibly emit an error event. You're safe.
Other ways of stopping the error from breaking the chain are to use .materialize()
or any of the .catchError
operators. For example:
QUESTION
My app crash only the first time i log into it. It used the GoogleMaps (3.7.0) pod, and I suspect the error comes from that library:
...ANSWER
Answered 2020-Jan-23 at 08:26Obviously the background thread in question (Thread 17) is accessing some UIKit method directly which in general is not allowed (can only be done from the main thread).
Did you dispatch some method on a background thread using GCD's dispatch async?
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