neilchaudhuri

package main

import (
	"fmt"
)

type Named struct {
	name string
}

neilchaudhuri

// Runtime polymorphism

trait Closeable {
  def name: String

  def close: String
}

case class Connection(override val name: String, database: String) extends Closeable {
  override def close: String = s"Closing connection $name"

neilchaudhuri

package main

import (
	"encoding/json"
	"fmt"
	"net/http"
	"strings"
)

type Result struct {

neilchaudhuri

import akka.actor.ActorSystem
import akka.stream.ActorMaterializer
import play.api.libs.ws._
import play.api.libs.ws.ahc._

import scala.concurrent.Future
import scala.concurrent.ExecutionContext.Implicits._
import play.api.libs.json._

implicit val system = ActorSystem()

neilchaudhuri

package main

import "fmt"
import "strings"

func main() {
	dictionary := make(map[string]int)
	words := []string{"Fear", "of", "a", "name", "only", "increases", "fear", "of", "the", "thing", "itself"}
	for _, word := range words {
		word = strings.ToLower(word)

neilchaudhuri

val words = List("Fear", "of", "a", "name", "only", "increases", "fear", "of", "the", "thing", "itself")

words
  .groupBy(_.toLowerCase)
  .mapValues(_.size)

neilchaudhuri

package main

import "fmt"
import "math"

func squareRoot(value int) (float64, error) {
	if value >= 0 {
		return math.Sqrt(float64(value)), nil
	} else {
		return 0, fmt.Errorf("invalid input: %v", value)

neilchaudhuri

import scala.util.{Failure, Success, Try}

def squareRoot(value: Int): Try[Double] = {
  if (value >= 0) {
    Success(Math.sqrt(value))
  } else {
    Failure(new IllegalArgumentException("Value cannot be negative"))
  }
}
val sum = for {

neilchaudhuri

case class Student(name: String, house: String)

def findStudent(key: Int): Option[Student] = {
  val students = Map(
    1 -> Student("Harry Potter", "Hogwarts"),
    3 -> Student("Draco Malfoy", "Slytherin")
  )
  students.get(key)
}

neilchaudhuri

package main

import "fmt"

type Student struct {
	name string
	house string
}

func findStudent(key int) (Student, bool) {