Kotlin Inline Function

snippet.kt

inline fun greeter(action: () -> Unit) {
  try {
    println("Hello!")
    action()
  }finally{
    println("Goodbye!")
  }
}

greeter {
  println("How are you?")
}

// directly expands to:

try {
  println("Hello!")
  println("How are you?")
}finally{
  println("Goodbye!")
}