stuartsierra

;; Example implementation of Norvig's Spellchecker in Clojure,
;; using core.async
;;
;; There are probably some bugs in this.
;;
;; Original problem: https://github.com/ericnormand/spelling-jam
;; from Lambda Jam, Chicago, 2013: http://lambdajam.com/
;;
;; Clojure core.async introduction:
;; http://clojure.com/blog/2013/06/28/clojure-core-async-channels.html

subelsky

# Gemfile
gem "puma"

# Procfile
web: bundle exec puma -p $PORT -e $RACK_ENV -C config/puma.rb

# add to config block config/environments/production.rb
config.threadsafe!

# get rid of NewRelic after_fork code, if you were doing this:

ordinaryzelig

I'm a fan of MiniTest::Spec. It strikes a nice balance between the simplicity of TestUnit and the readable syntax of RSpec. When I first switched from RSpec to MiniTest::Spec, one thing I was worried I would miss was the ability to add matchers. (A note in terminology: "matchers" in MiniTest::Spec refer to something completely different than "matchers" in RSpec. I won't get into it, but from now on, let's use the proper term: "expectations").

Understanding MiniTest::Expectations

Let's take a look in the code (I'm specifically referring to the gem, not the standard library that's built into Ruby 1.9):

# minitest/spec.rb

module MiniTest::Expectations

jcoglan

Thin vs Puma

Run these two servers using the commands given in their source. Benchmark using:

ab -n 1000 -c 1000 http://localhost:8000/

I found thin can handle these requests without a problem. puma drops connections and causes ab to exit early.

With 200 threads, puma can handle 200 requests but does not respond promptly:

unders

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

tenderlove

###
# This is a JSON building library.  It allows you to build data structures
# to dump as JSON.  Here is a sample of how to use it:
#
# def person_hash(person)
#   {
#     'name'    => person.name,
#     'age'     => person.age,
#     'friends' => person.friends.map { |x| person_hash x }
#   }

reagent

class Credential
  include ActiveModel::Validations

  attr_accessor :screen_name, :oauth_token, :oauth_secret, :token, :description

  validates_presence_of :screen_name, :oauth_token, :oauth_secret, :message => 'required'
  validate :user_exists, :unless => :errors?

  def initialize(attributes = {})
    attributes.each {|k, v| set_recognized_attribute(k, v) }

nevans

#!/usr/bin/env ruby

module TopLevel
  CONST_D = :d_from_top_level
  module MiddleLevel
    class BottomLevel
      CONST_A = :foo
      CONST_B = :bar
      CONST_C = :c_from_bottom_level

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

cdcarter

class FormHelper
    attr_accessor :form
    
    def initialize(nsform=nil)
        @form = nsform
    end
    
    def length
        form.numberOfRows
    end