ghostdogpr

import java.nio.file.{ Files, Paths }
import zio.IO

def copyFile(path: String, destination: String): IO[Throwable, Unit] = IO.effect {
  Files.copy(Paths.get(path), Paths.get(destination))
}

ghostdogpr

import scala.io.{ Codec, Source }
import zio.{ App, console, ZIO }
import zio.blocking._

object SampleApp extends App {

  def getResource(path: String): ZIO[Blocking, Throwable, String] = effectBlocking {
    Source.fromResource(path)(Codec.UTF8).getLines.mkString
  }

ghostdogpr

def send(client: SqsAsyncClient, queueUrl: String, msg: String): Task[Unit] =
  IO.effectAsync[Any, Throwable, Unit] { cb =>
    client
      .sendMessage(SendMessageRequest.builder.queueUrl(queueUrl).messageBody(msg).build)
      .handle[Unit]((_, err) => {
        err match {
          case null => cb(IO.unit)
          case ex   => cb(IO.fail(ex))
        }
      })

ghostdogpr

def sendMsg(actor: ActorRef, msg: String): Task[String] =
  IO.fromFuture { implicit ctx =>
    (actor ? msg).mapTo[String]
  }

ghostdogpr

Stream.fromEffect {
  IO.effectAsync[Any, Throwable, List[Message]] { cb =>
    client
      .receiveMessage(ReceiveMessageRequest.builder.queueUrl(queueUrl).maxNumberOfMessages(10).build)
      .handle[Unit]((result, err) => {
        err match {
          case null => cb(IO.succeed(result.messages.asScala.toList))
          case ex   => cb(IO.fail(ex))
        }
      })

ghostdogpr

def listen(actorSystem: ActorSystem, topic: String): Task[Queue[String]] =
  for {
    queue      <- Queue.bounded[String](1000)
    rts        <- Task.runtime[Any]
    _          <- Task(actorSystem.actorOf(Props(new SubscriberActor(topic, rts, queue))))
  } yield queue
  
case class MessageEnvelope(msg: String)
  
class SubscriberActor(topic: String, rts: Runtime[Any], queue: Queue[String]) extends Actor {

ghostdogpr

import language.experimental.macros
import language.implicitConversions
import magnolia._

trait MyTypeclass[T] {
  def f(t: T): String
}

object MyTypeclass {
  type Typeclass[T] = MyTypeclass[T]

ghostdogpr

import magnolia.{ CaseClass, Magnolia, SealedTrait }
import mercator.Monadic
import zio.random.Random
import zio.test.{ Gen, Sized }

object Generators {

  implicit val genUnit: Typeclass[Unit]     = Gen.unit
  implicit val genBool: Typeclass[Boolean]  = Gen.boolean
  implicit val genString: Typeclass[String] = Gen.small(Gen.stringN(_)(Gen.alphaNumericChar))

ghostdogpr

// Step 1:
// Code generation creates helpers from a GraphQL schema
// Character.* and Queries.* here are auto-generated

// Step 2:
// Build your own queries combining those helpers
val character =
  (Character.name ~
    Character.nicknames ~
    Character.origin).mapN(CharacterView)

ghostdogpr

import scala.deriving._
import scala.quoted._
import scala.quoted.matching._
import scala.compiletime._

trait Show[T] {
  def show(x: T): String
}
object Show {