Swift Quick Start

Setting up a Dependency Injection container couldn't be more easy.

###First, create a sub-class of TyphoonAssembly:

Let's perform an initializer injection.

public class SwiftMiddleAgesAssembly : TyphoonAssembly {
    
    public dynamic func basicKnight() -> AnyObject {
        
        //Perform an initializer injection 
        return TyphoonDefinition.withClass(Knight.self) {
            (definition) in
            
            definition.useInitializer("initWithQuest:") {
                (initializer) in
                
                initializer.injectParameterWith(self.defaultQuest())
                
            }
        }
    }
    
    public dynamic func defaultQuest() -> AnyObject {
        return TyphoonDefinition.withClass(CampaignQuest.self)
    }
    
}

###Obtain built instances from the assembly as follows:

let assembly = SwiftMiddleAgesAssembly().activate()
let knight = assembly.basicKnight() as! Knight 

And we're done!

• We can proceed from one object graph to another, by injecting the assembly.
• For fully Typhoon-powered apps we can bootstrap using plist integration. This gives AppDelegate injection and tight Storyboard integration.

###Key Concept

Before activation each method in a TyphoonAssembly returns a TyphoonDefinition. After activation we'll use the same interface to return built instances. Since the type checker in Swift is strict, you can declare the return type as AnyObject.

##IMPORTANT

Swift doesn't (yet?) have native reflection so the Objective-C runtime is used.

• Every class you want to inject has to be a subclass of NSObject in some way (either by subclassing or adding @objc modifier).
• TyphoonAssembly methods must be marked as dynamic. Similarly injected methods in your classes must also be dynamic.
• If you define a protocol property in your class (e.g. var cityDao: CityDao?), that protocol must also have the @objc modifier). Otherwise injection will not work.

See the sample project for more information.

Sample Application

• Here is a Swift Sample Application