First use of cats-effect API. / published by https://github.com/dacr/code-examples-manager #29b448c8-33f7-45d1-b578-930284dee3aa/cf30ec67a2941ece6bd2424125a15ff46ca3c2fd

cats-first-try.sc

// summary : First use of cats-effect API.
// keywords : scala, cats, effect
// 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 : 29b448c8-33f7-45d1-b578-930284dee3aa
// created-on : 2019-06-26T19:37:50Z
// managed-by : https://github.com/dacr/code-examples-manager
// run-with : scala-cli $file

// ---------------------
//> using scala "3.5.1"
//> using dep "org.typelevel::cats-effect:3.5.4"
// ---------------------

import cats._
import cats.data._
import cats.implicits._
import cats.effect.IO
import cats.effect.unsafe.implicits.global


// example inspired from https://alvinalexander.com/scala/cats-io-monad-sbt-example-app
val program = for {
  _    <- IO { println("Welcome to Scala!  What's your name?") }
  name <- IO { scala.io.StdIn.readLine }
  _    <- IO { println(s"Well hello, $name!") }
} yield ()

program.unsafeRunSync()