Kotlin Interfaces

snippet.kt

interface A {
  val a: Int     // abstract
  val b: Int     // abstract 
  fun foo()      // abstract
  fun bar() {
    // optionnal body
  }
}

interface B { ... }

class C: A, B {
  override val a: Int = 42
  override val b: Int
           get() = a + 1
  
  override foo() { ... }
  override bar() { ... }
}