CoroutineScope Dispatchers.IO异步操作async返回函数,Kotlin
CoroutineScopeDispatchers.IO异步操作async返回函数,Kotlinimportkotlinx.coroutines.*funmyFun(a:Int,b:Int,retFun:(sum:Int)->Unit){println("分支myFun开始...${System.currentTimeMillis()}")valtask=CoroutineScope(Dispat