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ZIO learning - clock / published by https://github.com/dacr/code-examples-manager #64edef51-38e9-492e-88f6-b00b5336ad55/ea44b8db59cf18dbbf9a853e14315369a27d9b46
// summary : ZIO learning - clock
// keywords : scala, zio, learning, pure-functional
// publish : gist
// authors : David Crosson
// license : Apache NON-AI License Version 2.0 (https://raw.githubusercontent.com/non-ai-licenses/non-ai-licenses/main/NON-AI-APACHE2)
// id : 64edef51-38e9-492e-88f6-b00b5336ad55
// created-on : 2021-04-02T16:22:22+02:00
// managed-by : https://github.com/dacr/code-examples-manager
// run-with : scala-cli $file
// ---------------------
//> using scala "3.4.2"
//> using dep "dev.zio::zio:2.0.13"
//> using dep "fr.janalyse::zio-worksheet:2.0.13.0"
// ---------------------
import zio.*, zio.worksheet.*, zio.Duration.*
val alarmLogic = for {
_ <- Console.printLine("how many seconds to wait for ?")
duration <- Console.readLine.mapAttempt(_.toInt)
_ <- Clock.sleep(duration.seconds)
_ <- Console.printLine("Wake up !")
} yield ()
/*
So as alarmLogic is an effect, it is very very easy to test
although a clock is being used, see the next example
*/
// -------------------------------------------------------------
alarmLogic.unsafeRun
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