Singleton with argument in Kotlin

Question

The Kotlin reference says that I can create a singleton using the object keyword like so:

object DataProviderManager {
  fun registerDataProvider(pr         


        

Answer 1

Kotlin has a feature called Operator overloading, letting you pass arguments directly to an object.

object DataProviderManager {
  fun registerDataProvider(provider: String) {
      //
  }

  operator fun invoke(context: ApplicationContext): DataProviderManager {
      //...
      return this
  }
}

//...
val myManager: DataProviderManager = DataProviderManager(someContext)