fun main(args: Array<String>) {
    val dummy: (String) -> Unit = {}
    val dummy2: (String) -> String = { "foo" }
    val foo = dummy2..dummy

    dummy(dummy2(""))
}


operator fun <T, K> (() -> T).rangeTo(block: (T) -> K): () -> K = { block(this()) }
operator fun <T, U, V> ((T) -> U).rangeTo(block: (U) -> V): (T) -> V = { block(this(it)) }