| /* |
| * 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.channel.example05 |
| |
| import kotlinx.coroutines.experimental.* |
| import kotlinx.coroutines.experimental.channels.* |
| import kotlin.coroutines.experimental.CoroutineContext |
| |
| fun numbersFrom(context: CoroutineContext, start: Int) = produce<Int>(context) { |
| var x = start |
| while (true) send(x++) // infinite stream of integers from start |
| } |
| |
| fun filter(context: CoroutineContext, numbers: ReceiveChannel<Int>, prime: Int) = produce<Int>(context) { |
| for (x in numbers) if (x % prime != 0) send(x) |
| } |
| |
| fun main(args: Array<String>) = runBlocking<Unit> { |
| var cur = numbersFrom(coroutineContext, 2) |
| for (i in 1..10) { |
| val prime = cur.receive() |
| println(prime) |
| cur = filter(coroutineContext, cur, prime) |
| } |
| coroutineContext.cancelChildren() // cancel all children to let main finish |
| } |