RosettaCodeData/Task/Scope-Function-names-and-labels/Kotlin/scope-function-names-and-labels.kotlin
2017-09-25 22:28:19 +02:00

66 lines
1.8 KiB
Text

// version 1.1.2
// top level function visible anywhere within the current module
internal fun a() = println("calling a")
object B {
// object level function visible everywhere, by default
fun f() = println("calling f")
}
open class C {
// class level function visible everywhere, by default
fun g() = println("calling g")
// class level function only visible within C
private fun h() = println("calling h")
// class level function only visible within C and its subclasses
protected fun i() {
println("calling i")
println("calling h") // OK as h within same class
// nested function in scope until end of i
fun j() = println("calling j")
j()
}
}
class D : C(), E {
// class level function visible anywhere within the same module
fun k() {
println("calling k")
i() // OK as C.i is protected
m() // OK as E.m is public and has a body
}
}
interface E {
fun m() {
println("calling m")
}
}
fun main(args: Array<String>) {
a() // OK as a is internal
B.f() // OK as f is public
val c = C()
c.g() // OK as g is public but can't call h or i via c
val d = D()
d.k() // OK as k is public
// labelled lambda expression assigned to variable 'l'
val l = lambda@ { ->
outer@ for (i in 1..3) {
for (j in 1..3) {
if (i == 3) break@outer // jumps out of outer loop
if (j == 2) continue@outer // continues with next iteration of outer loop
println ("i = $i, j = $j")
}
if (i > 1) println ("i = $i") // never executed
}
val n = 1
if (n == 1) return@lambda // returns from lambda
println("n = $n") // never executed
}
l() // invokes lambda
println("Good-bye!") // will be executed
}