AlexRogalskiy

trait Animal
private class Dog extends Animal
private class Cat extends Animal

trait Wanna
case object WannaCat extends Wanna
case object WannaDog extends Wanna

trait AnimalFactory[Wanna] {
  def create(): Animal

AlexRogalskiy

$line1="COLOR_RES(\"%d\",";
$line2="\tscreen.Acolors[%d],";
$line3="\tDFT_COLOR(\"rgb:%2.2x/%2.2x/%2.2x\")),\n";

# colors 16-231 are a 6x6x6 color cube
for ($red = 0; $red < 6; $red++) {
    for ($green = 0; $green < 6; $green++) {
    for ($blue = 0; $blue < 6; $blue++) {
        $code = 16 + ($red * 36) + ($green * 6) + $blue;
        printf($line1, $code);

AlexRogalskiy

Different ways to create objects in JavaScript

JavaScript has a number of predefined objects. In addition, you can create your own objects.

Using object initializers

It is sometimes referred to as creating objects with literal syntax. It's one of easiest way to create an object by simply define the property and values inside curly braces.

AlexRogalskiy

#!/bin/bash
# This is a fork of https://github.com/gagle/raspberrypi-motd that addresses issue #6. 

function color (){
  echo "\e[$1m$2\e[0m"
}

function extend (){
  local str="$1"
  let spaces=60-${#1}

AlexRogalskiy

Welcome to Cacher

We're delighted you've chosen Cacher to be your snippet organizer! Whether you're a solo developer or a member of your team, Cacher is here to help you organize and use snippets more efficiently.

Our users create snippets to:

• Remember project-specific algorithms
• Create cheatsheets for useful libraries
• Share knowledge with colleagues

AlexRogalskiy

function CartesianProduct {
    param
    (
        [Parameter(Mandatory = $true, ValueFromPipeline = $true)]
        [Hashtable]
        $values = @{ Foo = 1..5; Bar = 1..10}
    )
    $keys = @($values.GetEnumerator() | ForEach-Object { $_.Name })
    $result = @($values[$keys[0]] | ForEach-Object { @{ $keys[0] = $_ } })
    if ($keys.Length -gt 1) {

AlexRogalskiy

function symlink ([String] $real, [String] $link) {
    if (Test-Path $real -pathType container) {
        cmd /c mklink /j $link.Replace("/", "\") $real.Replace("/", "\")
    } else {
        cmd /c mklink /h $link.Replace("/", "\") $real.Replace("/", "\")
    }
}

AlexRogalskiy

trait ID

case class SequentialID(id: Int) extends ID
case class OtherID(id: Int) extends ID

case class User(val id: ID, val b: Int, val c: Int)

object UserId {
  def unapply(w: User) = w match {
     case u @ User(SequentialID(id), _, _) => Some(u, id)

AlexRogalskiy

package utils

import scala.concurrent.duration.FiniteDuration
import scala.concurrent.duration._
import play.api.Application
import collection.JavaConversions._

object ConfigString {
  implicit class ConfigStr(s: String) {
    def configOrElse(default: FiniteDuration)(implicit app: Application): FiniteDuration =

AlexRogalskiy

import  scala.util.control.Exception._
val numbersAsStrings = Seq("1", "2", "3", "4", "10", "N")
val ints = numbersAsStrings flatMap { catching(classOf[NumberFormatException]) opt _.toInt } filter { _ % 2 == 0 }