// retoor <retoor@molodetz.nl>
import "scheduler" for Scheduler, Future
var double = async { |x| x * 2 }
var addTen = async { |x| x + 10 }
System.print(await addTen(await double(5))) // expect: 20
System.print(await double(await addTen(3))) // expect: 26
System.print(await double(await double(await double(2)))) // expect: 16