async/await for Swift
import Awaitable
func merge_sort<T : Comparable>(array: Array<T>) -> [T] {
if array.count <= 16 { return array.sort() }
let mid = array.count / 2
let left = Array(array[0..<mid])
let right = Array(array[mid..<array.count])
let lf = async { merge_sort(left) }
let lr = async { merge_sort(right) }
return (lf.await() + lr.await()).sort()
}
let a = [
28, 87, 98, 16, 25,
24, 88, 74, 82, 18,
69, 53, 0, 86, 4,
81, 54, 60, 64, 12,
53, 3, 39, 78, 99]
let v = merge_sort(a)
print("result: \(v)")
// => result: [0, 3, 4, 12, 16, 18, 24, 25, 28, 39, 53, 53, 54, 60, 64, 69, 74, 78, 81, 82, 86, 87, 88, 98, 99]let t = async { () -> [() -> Int] in
var a: [() -> Int] = []
for i in 1...10000 {
a.append({ i })
}
return a
}
let v = t.await().reduce(0) { $0 + $1 }
print("value: \(v)")
// => value: 50005000MIT