AssistedInjection sample #1 - without assisted injection

without_assisted_injection.kt

class RuntimeArg {} 

@Singleton class A @Inject constructor()
@Singleton class B @Inject constructor(private val a: A)
@Singleton class C @Inject constructor(private val b: B)

class D(
  private val a: A, 
  private val b: B, 
  private val c: C, 
  private val runtimeArg: RuntimeArg
) {
  class Factory @Inject constructor(
    private val a: A, 
    private val b: B, 
    private val c: C
  ) {
    fun create(runtimeArg: RuntimeArg) = D(a, b, c, runtimeArg)
  }
}