jbgo

This is how I debug SystemStackError when there is no stack trace.

My first attempt was:

begin
  a_method_that_causes_infinite_recursion_in_a_not_obvious_way
rescue SystemStackError
  puts caller
end

evandrix

Here are a list of headless browsers that I know about:

• [HtmlUnit][1] - Java. Custom browser engine. JavaScript support/DOM emulated. Open source.
• [Ghost][2] - Python only. WebKit-based. Full JavaScript support. Open source.
• [Twill][3] - Python/command line. Custom browser engine. No JavaScript. Open source.
• [PhantomJS][4] - Command line/all platforms. WebKit-based. Full JavaScript support. Open source.
• [Awesomium][5] - C++/.Net/all platforms. Chromium-based. Full JavaScript support. Commercial/free.
• [SimpleBrowser][6] - .Net 4/C#. Custom browser engine. No JavaScript support. Open source.
• [ZombieJS][7] - Node.js. Custom browser engine. JavaScript support/emulated DOM. Open source.
• [EnvJS][8] - JavaScript via Java/Rhino. Custom browser engine. JavaScript support/emulated DOM. Open source.

mikhailov

# Nginx+Unicorn best-practices congifuration guide. Heartbleed fixed.
# We use latest stable nginx with fresh **openssl**, **zlib** and **pcre** dependencies.
# Some extra handy modules to use: --with-http_stub_status_module --with-http_gzip_static_module
#
# Deployment structure
#
# SERVER:
#  /etc/init.d/nginx                             (1. nginx)
#  /home/app/public_html/app_production/current  (Capistrano directory)
#

dhh

class ActionDispatch::Routing::Mapper
  def draw(routes_name)
    instance_eval(File.read(Rails.root.join("config/routes/#{routes_name}.rb")))
  end
end

BCX::Application.routes.draw do
  draw :api
  draw :account
  draw :session

rakhmad

Setting Up Clojure on OS X

I spent a lot of time trying to find a pretty optimal (for me) setup for Clojure… at the same time I was trying to dive in and learn it. This is never optimal; you shouldn't be fighting the environment while trying to learn something.

I feel like I went through a lot of pain searching Google, StackOverflow, blogs, and other sites for random tidbits of information and instructions.

This is a comprehensive "what I learned and what I ended up doing" that will hopefully be of use to others and act as a journal for myself if I ever have to do it again. I want to be very step-by-step and explain what's happening (and why) at each step.

Step 1: Getting Clojure (1.3)

granth

module Delayed
  module Plugins
    class Airbrake < Plugin
      module Notify
        def error(job, error)
          ::Airbrake.notify_or_ignore(error)
          super
        end
      end

andrey-kazakov

# requires socksify gem
require "socksify"
require 'socksify/http'

# use w/ OAuth2 like OAuth2::Client.new(id, secret, connection_opts: { proxy: 'socks://127.0.0.1:9050' })
class Faraday::Adapter::NetHttp
  def net_http_class(env)
    if proxy = env[:request][:proxy]
      if proxy[:uri].scheme == 'socks'
        Net::HTTP::SOCKSProxy(proxy[:uri].host, proxy[:uri].port)

juanje

# A few examples about how to use Ruby for parsing files as we could do
# with Awk or Grep. This is based on what I learn fro this post:
# http://code.joejag.com/2009/using-ruby-as-an-awk-replacement/

# Split each line with ':' and print the first $F[0] field
awk -F: '{ print $1 }' /etc/passwd
ruby -F: -nae 'puts $F[0]' /etc/passwd
 
# Parse the 'ps aux' output
# It'll print the ID process for the 'jojeda' user

lucasfais

Sublime Text 2 – Useful Shortcuts (Mac OS X)

General

⌘T	go to file
⌘⌃P	go to project
⌘R	go to methods
⌃G	go to line
⌘KB	toggle side bar
⌘⇧P	command prompt

choonkeat

# inside config/environment.rb
if Rails.env == 'development'
  Rails.logger.info "Delayed::Job is executed synchronously in #{Rails.env} mode."
  Delayed::Job.class_eval do
    def self.enqueue(obj)
      Rails.logger.info "Delayed::Job:SYNC START"
      obj.perform
      Rails.logger.info "Delayed::Job:SYNC END"
    end
  end