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Can dependency injection like Typhoon replace multiple singletons?


Can dependency injection like Typhoon replace multiple singletons?

By : Mark Fischer
Date : November 22 2020, 10:38 AM
wish of those help Typhoon creator here. Yes, one of the uses of dependency injection it to provide the benefits of singletons without the drawbacks. But you don't necessarily need a library to apply the dependency injection pattern and replace your singletons. In fact it helps to understand the pattern by looking at how to implement it without a framework first:
Hollywood Principle: Don't call us, we'll call you
code :
initWithNibName:(NSString *)nibName bundle:(NSBundle *)bundle 
{
    self = [super initWithNibName:nibname bundle:bundle];
    if (self) {
        _serviceClient = [MyServiceClient sharedInstance];
    }
} 
initWitServiceClient:(id<ServiceClient>)serviceClient
{
    self = [super initWithNibName:@"MyNib" bundle:[NSBundle mainBundle]; 
    if (self) {
        _serviceClient = serviceClient;
    }
} 


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Wiring objects with Dependency Injection and JSON in Objective-C Typhoon

Wiring objects with Dependency Injection and JSON in Objective-C Typhoon


By : Mike Campbell
Date : March 29 2020, 07:55 AM
this will help Since Typhoon 2.0 we only support the native format (recommended) along with auto-wiring macros. The main benefits are:
IDE refactoring and code-completion works without any additional plugins No "magic strings" when wiring by reference. Components can be resolved using the assembly interface. Since version 2.0 this includes supplying runtime arguments along with static dependencies.
Angular 2 Dependency Injection singletons

Angular 2 Dependency Injection singletons


By : anam01
Date : March 29 2020, 07:55 AM
To fix the issue you can do You need to use the @Inject decorator in your case to inject your dependency!
code :
export class ImageComponent {
  constructor(
    private element: ElementRef,
    @Inject(QuickPollingService) private poller: Poller
  ) {}
}
export let quickPollingServiceProvider = provide(Poller, {
  useFactory: () => {
    return new Poller(200);
  }
});
export class ImageComponent {
  constructor(
    private element: ElementRef,
    private poller: Poller
  ) {}
}
Typhoon Dependency Injection and Swift 3: Appdelegate isn't AnyObject

Typhoon Dependency Injection and Swift 3: Appdelegate isn't AnyObject


By : joe
Date : March 29 2020, 07:55 AM
may help you . You may want to switch the return type from AnyObject to Any.
The withClass function returns an id type in Objective-C, see the source code:
code :
+ (id)withClass:(Class)clazz block:(TyphoonBlockDefinitionInitializerBlock)block;
Using Dependency Injection as an alternative to Singletons

Using Dependency Injection as an alternative to Singletons


By : ddd
Date : March 29 2020, 07:55 AM
it fixes the issue Spring and Guice will do fine. I personnally prefer Guice for pure dependency injection, but Spring offers much more.
The code would just look like this:
injecting singletons using typhoon giving multiple instance

injecting singletons using typhoon giving multiple instance


By : Dušan Argaláš
Date : March 29 2020, 07:55 AM
like below fixes the issue You're creating a new assembly above. What you need to do is get a handle to the one created using plist integration. So for example to access the assembly from your app delegate, inject it into that.
To access the assembly from a static method, you'll have to create a static pointer to it:
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