International

package main

import (
	"database/sql"
	"errors"
	"fmt"
	_ "github.com/bmizerany/pq"
	"os"
	"regexp"
	"strings"

International

# Ask for the user password
# Script only works if sudo caches the password for a few minutes
sudo true

# Add Docker PPA and install latest version
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 36A1D7869245C8950F966E92D8576A8BA88D21E9
sudo sh -c "echo deb https://get.docker.io/ubuntu docker main > /etc/apt/sources.list.d/docker.list"
sudo apt-get update
sudo apt-get install lxc-docker -y

International

package main

import (
	"fmt"
	"github.com/gorilla/mux"
	"github.com/gorilla/securecookie"
	"net/http"
)

// cookie handling

International

# config/unicorn.rb
worker_processes Integer(ENV["WEB_CONCURRENCY"] || 3)
timeout 60
preload_app true

before_fork do |server, worker|
  Signal.trap 'TERM' do
    puts 'Unicorn master intercepting TERM and sending myself QUIT instead'
    Process.kill 'QUIT', Process.pid
  end

International

5.times { puts "Hello world" }

International

#include <iostream>

using namespace std;

int main(int argc,char* argv[]) {
  for(int i = 0;i < 5;i++) {
    cout << "Hello world!" << endl;
  }
  return 0;
}

International

public class SampleIteration {
  public static void main(String[] args) {
    for(int i = 0;i < 5;i++) {
      System.out.println("Hello world");
    }
  }
}

International

# Rails 3
"police".singularize
=> "polouse"

# Rails 4
"police".singularize
=> "police"

International

class PeopleController < ActionController::Base
  # This will raise an ActiveModel::ForbiddenAttributes exception because it's using mass assignment
  # without an explicit permit step.
  def create
    Person.create(params[:person])
  end

  # This will pass with flying colors as long as there's a person key in the parameters, otherwise
  # it'll raise a ActionController::MissingParameter exception, which will get caught by
  # ActionController::Base and turned into that 400 Bad Request reply.

International

class SomeBackgroundOperation
  def run
    # code to run in the background goes here
  end
end

# enqueing it to run
Rails.queue.push(SomeBackgroundOperation.new)