| /* |
| * Copyright 2016-2017 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| // This file was automatically generated from coroutines-guide.md by Knit tool. Do not edit. |
| package guide.select.example04 |
| |
| import kotlinx.coroutines.experimental.* |
| import kotlinx.coroutines.experimental.channels.* |
| import kotlinx.coroutines.experimental.selects.* |
| import java.util.* |
| |
| fun asyncString(time: Int) = async { |
| delay(time.toLong()) |
| "Waited for $time ms" |
| } |
| |
| fun asyncStringsList(): List<Deferred<String>> { |
| val random = Random(3) |
| return List(12) { asyncString(random.nextInt(1000)) } |
| } |
| |
| fun main(args: Array<String>) = runBlocking<Unit> { |
| val list = asyncStringsList() |
| val result = select<String> { |
| list.withIndex().forEach { (index, deferred) -> |
| deferred.onAwait { answer -> |
| "Deferred $index produced answer '$answer'" |
| } |
| } |
| } |
| println(result) |
| val countActive = list.count { it.isActive } |
| println("$countActive coroutines are still active") |
| } |