nelanka

import java.util.concurrent.{Executors, TimeoutException}

import scala.concurrent.duration._
import scala.concurrent.{ExecutionContext, Future, Promise}
import scala.concurrent.ExecutionContext.Implicits.global

def timeoutFuture[T](f: Future[T], after: Duration)(implicit ec: ExecutionContext) = {
  val p = Promise[T]()
  p tryCompleteWith f
  val action = new Runnable {

nelanka

import java.util.Locale

lazy val countryNameToCode = Locale.getISOCountries.map{ countryCode =>
  (new Locale("", countryCode).getDisplayCountry, countryCode)
}.toMap
lazy val countryCodeToName = countryNameToCode.map(_.swap)

countryCodeToName("HK")
countryCodeToName("GB")
countryCodeToName("US")

nelanka

import java.util.concurrent.ConcurrentHashMap

trait StringDeserializer[T] {
  def deserialize(s: String): T
}

trait StringSerializable[T] {
  def serialize: String
}

nelanka

def recursiveListFiles(file: File): Array[File] = {
  @tailrec
  def trImpl(dirs: Array[File], files: Array[File]): Array[File] = {
    if (dirs.isEmpty) {
      files
    }
    else {
      val (subdirs, moreFiles) = dirs.flatMap(_.listFiles).span(_.isDirectory)
      trImpl(subdirs, files ++ moreFiles)
    }

nelanka

def time[R](block: => R): R = {
  val t0 = System.nanoTime()
  val result = block
  println("Elapsed time: " + (System.nanoTime - t0) + "ns")
  result
}

nelanka

def fib(n: Int): Int = {
  @tailrec
  def recFib(a: Int, b: Int, i: Int): Int = i match {
    case 0 => a
    case _ => recFib(b, a + b, i - 1)
  }
  recFib(0, 1, n)
}

nelanka

case class IdentifierKey(idType: String, id: String) {
  override def toString: String = SerializedIdentifierKey(this)
}

object SerializedIdentifierKey extends (IdentifierKey => String) {
  val delimiter = ':'

  def apply(i: IdentifierKey): String = i.idType + SerializedIdentifierKey.delimiter + i.id

  def unapply(s: String): Option[IdentifierKey] = {

nelanka

// Retry until it succeeds
class ExampleSpec extends FlatSpec with Eventually {
  eventually {
    futureInt.get shouldBe 1
  }
}

// Extended patience for integration tests
class ExampleSpec extends FlatSpec with Eventually with IntegrationPatience {
  eventually {

nelanka

implicit val ec = ExecutionContext.fromExecutor(Executors.newFixedThreadPool(8, new ThreadFactory() {
  override def newThread(r: Runnable): Thread = new Thread(Thread.currentThread().getThreadGroup, r, "MyWorker")
}))

nelanka

Sublime Packages and Setup

Icon

• Find a replacement icon for Sublime Text. The FlatLand icon looks great.
• Open the icon or image. Select all and copy to clipboard.
• Go to the Applications folder and Apple-i on the Sublime Text app.
• Select the app icon on the top left corner. A small select outline around the icon should appear.
• Paste the new icon and save.
• You can also right click on the SublimeText.app and click on "Show Package Contents". Navigate to the Contents/Resources folder and replace the icon that's in there with the new one.