kotlinx.coroutines

问题 I am trying to process a tree of data objects. Each tree leaf is supposed to be processed through a function using a coroutine. The whole process should be done using a fixed size threadpool. So I came up with this: val node = an instance of WorkspaceEntry (tree structure) val localDispatcher = newFixedThreadPoolContext(16) fun main() { val job = SupervisorJob() val scope = CoroutineScope(localDispatcher + job) handleEntry(node, scope) runBlocking { job.join() } } The handleEntry method

问题 I am trying to process a tree of data objects. Each tree leaf is supposed to be processed through a function using a coroutine. The whole process should be done using a fixed size threadpool. So I came up with this: val node = an instance of WorkspaceEntry (tree structure) val localDispatcher = newFixedThreadPoolContext(16) fun main() { val job = SupervisorJob() val scope = CoroutineScope(localDispatcher + job) handleEntry(node, scope) runBlocking { job.join() } } The handleEntry method

问题 As the title suggest, the coroutine builder runBlocking is missing in the coroutine liblary I just added in my build.gradle. Funny thing is every other thing appears to be available, GlobalScope , CoroutineScope.launch CoroutineScope.async all present. runBlocking isn't. What am I doing wrong? here is my build.gradle buildscript { ext { ktor_version = "1.1.1" kotlin_version = "1.3.20-eap-52" } dependencies { classpath "org.jetbrains.kotlin:kotlin-frontend-plugin:0.0.44" classpath "org

问题 As the title suggest, the coroutine builder runBlocking is missing in the coroutine liblary I just added in my build.gradle. Funny thing is every other thing appears to be available, GlobalScope , CoroutineScope.launch CoroutineScope.async all present. runBlocking isn't. What am I doing wrong? here is my build.gradle buildscript { ext { ktor_version = "1.1.1" kotlin_version = "1.3.20-eap-52" } dependencies { classpath "org.jetbrains.kotlin:kotlin-frontend-plugin:0.0.44" classpath "org

来源： https://stackoverflow.com/questions/54842169/kotlin-coroutines-globalscope-launch-vs-runblocking

来源： https://stackoverflow.com/questions/54842169/kotlin-coroutines-globalscope-launch-vs-runblocking

来源： https://stackoverflow.com/questions/54842169/kotlin-coroutines-globalscope-launch-vs-runblocking

问题 So, I recently started experimentation with coroutines, I switched from Rxjava2 to coroutines, I haven't got a grasp of it yet but still, I ran into a condition where I needed to observe my database change and update the UI corresponding to that. RxJava used to provide me with Flowables, Completeable etc. using that I would be able to observe changes in Db. abstract fun insert(data: SomeData): Long @Query("SELECT * FROM somedata_table") abstract fun getData(): Flowable<List<SomeData>> So here

问题 I have multi module kotlin gradle project in github here. One of my sub project introducing-coroutines with build file build.gradle.kts file is here The contents of build.gradle.kts is - import org.jetbrains.kotlin.gradle.dsl.Coroutines import org.jetbrains.kotlin.gradle.tasks.KotlinCompile plugins { java kotlin("jvm") version "1.3.11" } group = "chapter2" version = "1.0-SNAPSHOT" repositories { mavenCentral() } dependencies { compile(kotlin("stdlib-jdk8")) compile("org.jetbrains.kotlinx

问题 I have multi module kotlin gradle project in github here. One of my sub project introducing-coroutines with build file build.gradle.kts file is here The contents of build.gradle.kts is - import org.jetbrains.kotlin.gradle.dsl.Coroutines import org.jetbrains.kotlin.gradle.tasks.KotlinCompile plugins { java kotlin("jvm") version "1.3.11" } group = "chapter2" version = "1.0-SNAPSHOT" repositories { mavenCentral() } dependencies { compile(kotlin("stdlib-jdk8")) compile("org.jetbrains.kotlinx