import std.collection.*
import std.random.*
import std.math.*

const M = 200000
const N = 16
func task(): Int64 {
var n: Int64 = 0
let random = Random()
for (_ in 0..M) {
let x = random.nextFloat64()
let y = random.nextFloat64()
if ((x - 0.5) ** 2 + (y - 0.5) ** 2 < 0.25) {
n++
}
}
return n
}

main() {
let futures = ArrayList<Future<Int64>>()
for (_ in 0..N) {
let future = spawn { task() }
futures.append(future)
}
var n = 0
for (future in futures) {
n += future.get()
}
let pi = Float64(n) / Float64(M * N) * 4.0
println("π ≈ ${pi}")
println("deviation: ${abs(Float64.PI - pi)}")
}









这语法真是集百家之长啊，给我看出来了几种语言的影子