reactive/kotlinx-coroutines-rx2/src/test/kotlin/guide/example-reactive-basic-03.kt

/*
 * 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
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// This file was automatically generated from coroutines-guide-reactive.md by Knit tool. Do not edit.
package guide.reactive.basic.example03

import io.reactivex.*
import kotlinx.coroutines.experimental.*
import kotlinx.coroutines.experimental.reactive.*
import kotlin.coroutines.experimental.*

fun main(args: Array<String>) = runBlocking<Unit> {
    val source = Flowable.range(1, 5) // a range of five numbers
        .doOnSubscribe { println("OnSubscribe") } // provide some insight
        .doFinally { println("Finally") }         // ... into what's going on
    var cnt = 0 
    source.openSubscription().use { channel -> // open channel to the source
        for (x in channel) { // iterate over the channel to receive elements from it
            println(x)
            if (++cnt >= 3) break // break when 3 elements are printed
        }
        // `use` will close the channel when this block of code is complete
    }
}