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Kotlin - async vs launch and returning value
source link: http://mussatto.github.io/kotlin/async/launch/2020/08/14/kotlin-async-vs-launch.html
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Kotlin - async vs launch and returning value
“Stuff I always forget how to do and have to google it”
The main difference between async vs launch is that async can return a value and launch cannot
On Async statement
runBlocking {
val job = async {
println("Running on the background!")
Thread.sleep(1000)
"this is done!"
}
println("Response is ${job.await()}")
}
This will print “Response is this is done!”
Similar thing on Launch statement
runBlocking {
val job = launch {
println("Running on the background!")
Thread.sleep(1000)
// "this is done!" -> useless statement :(
}
// -- await() doesn't work :(
// println("Response is ${job.await()}")
job.join()
}
How to return a value from launch statement
It is some extra work but can be done, check previous channels post about this:
Source code: Here
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