flomotlik

#! /bin/bash

array=( $@ )
len=${#array[@]}
app=${array[$len-1]}
args=${array[@]:0:$len-1}

buffer_file=/tmp/last_heroku_run_`date +%N`

/usr/bin/heroku run "$args; echo \$?" --app $app 2>&1 | tee $buffer_file

concerning.rb

class Module
  # We often find ourselves with a medium-sized chunk of behavior that we'd
  # like to extract, but only mix in to a single class.
  #
  # We typically choose to leave the implementation directly in the class,
  # perhaps with a comment, because the mental and visual overhead of defining
  # a module, making it a Concern, and including it is just too great.
  #
  #
  # Using comments as lightweight modularity:

dergachev

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

roidrage

require 'connection_pool'
require 'redis'
require 'metriks'

class RedisClientWrapper
  def initialize(options)
    @options = options.delete(:pool)
    @pool = ConnectionPool.new(@options) do
      ::Redis.new(options)
    end

roidrage

#!/usr/bin/env ruby

pid = Kernel.fork do
  `#{ARGV.join(" ")}`
  exit
end

trap(:CHLD) do
  print "\n"
  exit

ryandotsmith

# A program that works jobs in newly created UNIX
# process by calling fork. The number of processes
# running at any given time is bounded by our use
# of a sized queue.

require 'thread'

# Run at most 4 UNIX processes for any given time.
@limiter = SizedQueue.new(4)

flomotlik

We have changed our check_url implementation from curl to wget for three reasons

1. It gives us the ability to retry on connection refused. Compare the command we used previously with curl:

curl -sSfL --retry 3 URL

to the current one:

bf4

#!/usr/bin/env ruby
# Bonus: place in PATH and use from the command line.
# Usage:
# find path -type f | xargs ruby highlight.rb
# gem contents metric_fu | grep lib | xargs ruby highlight.rb
# The highlighted code will be output to 'output.html' in the working directory

require 'coderay'
class Highlighter
  def initialize

thbar

task :outdated => :environment do
  include ActionView::Helpers::DateHelper
  regexp = /\* ([^ ]+) \((\S+) > ([^)]+)\)/
  outdated = `bundle outdated`.scan(regexp)
  outdated.each do |gem_name, available, current|
    data = JSON.parse(`curl --silent https://rubygems.org/api/v1/versions/#{gem_name}.json`)
    version = data.find { |e| e['number'] == current }
    age = distance_of_time_in_words_to_now(Time.parse(version['built_at']))
    puts "  * #{gem_name}: (#{available} > #{current}, built #{age} ago)"
  end

dhh

class Ticket < ActiveRecord::Base
  belongs_to :grouper
  belongs_to :user

  validate :user_cant_be_blacklisted, on: :confirmation
  validate :user_cant_double_book, on: :confirmation

  validate :grouper_cant_be_full, on: :confirmation
  validate :grouper_cant_have_occurred, on: :confirmation