// retoor <retoor@molodetz.nl>
import "scheduler" for Scheduler, Future
var double = async { |x| x * 2 }
var sum = 0
for (i in [1, 2, 3, 4, 5]) {
sum = sum + await double(i)
}
System.print(sum) // expect: 30
var results = []
for (i in 1..3) {
results.add(await double(i))
}
System.print(results) // expect: [2, 4, 6]