longliveenduro

import scala.util.Try

/**
 * Alternative to unsound construct: "sealed abstract case class"
 * see https://gist.github.com/tpolecat/a5cb0dc9adeacc93f846835ed21c92d2
 * The solution below is the summary of the comments of the above gist.
 *
 * Works as is in Scala 2.12 and higher
 * In Scala 2.11.12 you have to add -Xsource:2.12
 */

longliveenduro

/**
 * A Red / Green Tree.
 */
case class RedGreenTree {
}

longliveenduro

package net.gutefrage.connector.transforms

import java.util

import org.apache.kafka.common.config.ConfigDef
import org.apache.kafka.connect.connector.ConnectRecord
import org.apache.kafka.connect.data.{Schema, SchemaBuilder, Struct}
import org.apache.kafka.connect.transforms.Transformation
import org.apache.kafka.connect.transforms.util.Requirements.{requireMap, requireStruct}
import org.apache.kafka.connect.transforms.util.SimpleConfig

longliveenduro

import org.scalactic._
import play.api.libs.json.{JsError, JsLookupResult, JsSuccess, Reads}

object RichJsLookupResult {

  implicit class RichPlayJsonValidateToGoodOrBad(lookupResult: JsLookupResult) {

    def parseAs[T](implicit rds: Reads[T]): T Or Every[String] = {
      lookupResult.validate[T] match {
        case s: JsSuccess[T] => Good(s.get)

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object CollectDemo {

  val listOfTrys: List[Try[String]] = List(Success("apple"), Failure(new Exception("some failure")), Success("peach"), Success("strawberry"))

  val listOfExistingFruits: List[String] = listOfTrys.collect {
    case Success(name) => name
  }
  // prints out: List(apple, peach, strawberry)
  println(listOfExistingFruits)
}

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implicit class RichView[V <: android.view.View](view: V) {

  def onClick[U](f: android.view.View => U): V = {
    view.setOnClickListener(new android.view.View.OnClickListener {
      def onClick(p: android.view.View): Unit = f(p)        
    })
    view
  }
}

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case class User(id: Int, name: String, avatarUrl: Option[String])

val kevin = User(1, "Kevin", None)
val jeremy = User(1, "Jeremy", Some("http://someurl.de"))

val users = Seq(kevin, jeremy)

users.forEach { // iterate over the user sequence
  user => user match { // match every entry in the value 'user'
    case User(name, Some(url)) => 

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public class User {
    private int id;
    private String name;

    public int getId() {
        return id;
    }

    public String getName() {
        return name;

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case class User(id: Int, name: String)

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button.onClick(openUri("http://wikipedia.org"))