mislav

require 'net/http'

# WARNING do not use this; it works but is very limited
def resolve url
  res = Net::HTTP.get_response URI(url)
  if res.code == '301' then res['location']
  else url.to_s
  end
end

jcsrb

class ArticleImageUploader < ImageUploader

  process :fix_exif_rotation
  process :strip
  process :convert => 'jpg'
  process :quality => 85 # Percentage from 0 - 100

  version :gallery_thumb do
    process :resize_to_fill => Settings.images.article_images.processing.gallery_thumb #44x44
  end

nhocki

module Colors
  def colorize(text, color_code)
    "\033[#{color_code}m#{text}\033[0m"
  end

  {
    :black    => 30,
    :red      => 31,
    :green    => 32,
    :yellow   => 33,

durran

# See: https://github.com/mongoid/mongoid/blob/identity-map/spec/unit/mongoid/identity_map_spec.rb#L367

# In order for the identity map to work when using fibers the 
# entire unit of work must happen on the same fiber since it's using
# thread locals for storage.

# The following example is correct:
fiber = Fiber.new do
  Person.find(id)
  Person.find(id) # This query hits the identity map.

dhh

# autoload concerns
module YourApp
  class Application < Rails::Application
    config.autoload_paths += %W(
      #{config.root}/app/controllers/concerns
      #{config.root}/app/models/concerns
    )
  end
end

madrobby

Implementation of the Luhn 10 algorithm to check validity of credit card numbers. See http://en.wikipedia.org/wiki/Luhn_algorithm for details on the algorithm.

var validCreditCard = function(a,b,c,d,e){for(d=+a[b=a.length-1],e=0;b--;)c=+a[b],d+=++e%2?2*c%10+(c>4):c;return!(d%10)};

validCreditCard('378282246310005'); //=> true
validCreditCard('378282246310006'); //=> false

// some numbers to test with
// 378282246310005 371449635398431 378734493671000

madrobby

function(
  a, // a object holding test functions
  b, // a logging function, taking multiple arguments
  c, // placeholder 
  d, // placeholder
  e, // placeholder
  f  // placeholder
){
  c = d = e = 0;    // initialize asserts, failures and exception counts to 0
  for (             // iterate

eric1234

UPDATE: Please see some of the forks for an updated version of this guide. I
myself have moved onto the Rails 3.1 betas to get the asset pipeline. But if
you want to stay on stable there are other folks who are keeping this guide
relevant despite the changes constantly occurring on Sprockets 2. The comments
on this gist will lead you to the right forks. :)

Some brief instructions on how to use Sprocket 2 in Rails to get CoffeeScript
powered JS and SASS powered CSS with YUI compression all via the magic of rack.

This stuff will be native in Rails 3.1 and the layout of the files on the

gilles

#trace mongo in RPM
Mongo::Collection.class_eval do
  include NewRelic::Agent::MethodTracer
  add_method_tracer :find
  add_method_tracer :find_one
  add_method_tracer :find_and_modify
  add_method_tracer :update
  add_method_tracer :insert
  add_method_tracer :save
  add_method_tracer :remove

mikhailov

# NOTICE: to get Nginx+Unicorn best-practices configuration see the gist https://gist.github.com/3052776

  $ cd /usr/src
  $ wget http://nginx.org/download/nginx-1.2.1.tar.gz
  $ tar xzvf ./nginx-1.2.1.tar.gz && rm -f ./nginx-1.2.1.tar.gz

  $ wget ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-8.30.tar.gz
  $ tar xzvf pcre-8.30.tar.gz && rm -f ./pcre-8.30.tar.gz

  $ wget http://www.openssl.org/source/openssl-1.0.1c.tar.gz